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7.4 CIVIL AND ARCHITECTURE

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CIVIL AND ARCHITECTURE GENERAL PROVISION FOR AIS SUB-STATION WITH OFFICE BUILDING

7.41 References 7.4.1.1 General The design and construction shall conform to the latest edition of the relevant codes andstandards. Any proposed substitution for the listed standards by an equivalent standard will besubjecttoapprovalbytheEngineer.Relevantstandardsinclude.7.4.1.2 Design and Construction Standards BS12 PortlandCement BSEN124 GullyandManholetopsforvehicularandpedestrianareas BS812 TestingAggregates BS882 Aggregatesfromnaturalsourcesforconcrete BS1377 MethodsoftestforsoilforcivilEngineeringpurposes BS1722:Part10 Anti-intruderfences BS1881 Testingconcrete BS2853 Designandtestingofoverheadrunwaybeams BS3148 Methodsoftestforwaterformakingconcrete BS3921 Claybricks BS4449 Steelbarsforthereinforcementofconcrete BS5262 Externalrenderings BS5395 Stairs,laddersandwalkways BS5572 Sanitarypipeworks BS5628 Codeofpracticeforuseofmasonry BS5930 Codeofpracticeforsiteinvestigations BS6031 Codeofpracticeforearthworks BS6367 Codeofpracticefordrainageofroofsandpavedareas BS6399:Part1 Codeofpracticefordeadandimposedloads BS6399:Part2 Codeofpracticeforwindloads BS6465 Sanitaryinstallations BS6651 Codeofpracticeforprotectionofstructuresagainst lightning BS6700 Design, installation, testing and maintenance of services

supplyingwaterfordomesticuse. BS8004 Codeofpracticeforfoundations BS8005 Sewerage BS8100 Latticetowersandmasts BS8102 Codepracticeofprotectionofstructuresagainstwatertheground

structuraluseofconcrete. BS8110 Structuraluseofconcrete BS820 Lightningofbuildings BS8215 Codepracticefordesignandinstallationofdamp-proofcoursesin

masonry BS8290 Suspendedceilings Bs8301 CodeofpracticeforBuildingdrainage

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7.4.2 Design BothArchitecturalandStructuralDesignshallbesubmittedbythecontractortotheemployerforapproval.7.4.2.1 Architectural and structural Requirements of Buildings The details Architectural, Structural & other related drawing and design with Green Buildingconceptshallbesubmittedbythecontractortoemployerforapproval.

1. Structure : Modern Architectural designed R.C.C or Steel Framed Structure featured by

Green Building Technology.

2. Partition Wall : For all Exterior wall thickness should be 10 (ten) inches and interior wall

thickness should be 5 (five) inches and to be used 1st Class Bricks. All Brick wall should be plastered both sides as per standard (Except where

Fare-Facing Treatment to be used) In case of R.C.C. works 20mm down graded Stone chips should be used.

3. Covered Area : Minimum required area in Building are included with service areas & Other

Specific Functions - Control Room, Battery room, Cable Trench, Store, Office Rooms, Residential Accommodation, walkway, open Space & stair case etc.

4. Foundation : Considering 02 storied building (no Basement) (G+1)

(For AIS Regular type Sub-station) Plinth Level at +3ft above from Ground Level Ground Floor clear height 9’-6” ft Cable Trench & Ancillary Facility 1st Floor clear height 13’-6” ft for Control room

5. Floor/Roof Finish :

To be used 36 inch x 36inch size European standard Mirror Polished Homogeneous tiles for Ground & 1st Floor. Standard Quality Tiles for walk way or other common space.

6. Toilet/ Sanitary:

Floor and full height wall of the Toilet should be furnished by European Standard Tiles with decorative boarder.

To be used European Standard Commode, Basin and others Sanitary Fittings & Fixtures (such as Pillar Cock, Bib Cock, Push Shower etc.) should be European Standard as well as approved sample and design.

To be Constructed 50 users septic tank, inspection pit, sewerage line, apron, drain etc.

To be provided water supply system with Deep Tube well & over head water tank.

7. Electrical Fittings & Fixture :

Concealed Electrical wiring by Eastern/BRB/Paradise Fire Resistant Cable European Made MK type Gang switch, socket MCB etc Provision for Internet facilities system, Dish Line, Telephone

& Intercom wiring.

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Sufficient Earthling facilities. To be used LED Light To be provided sufficient Air Conditioner To be provided sufficient Ceiling Fan

8. Interior Wall Finishing : Smooth Finished & soft colored Plastic paint should be used over the Plastering work of interior wall and ceiling.

9. Exterior Wall : Smooth Finished & Architectural approved colored weather coat should be used over the Plastering work of Exterior wall. Some where should be used Ceramic Facing brick / Rustic Tiles

10. Window : Window should be made Standard Quality Thai Aluminum frame and

minimum 5mm thickness glass. 11. Door : Door Frame and Shutter should be made by solid wood such as Burma

Teak, Teak Chambal, Chapalish etc. which shall be approved by the owner's engineer.

12. Stair Railing : Should be used approved designed SS Railing in the Stair case.

13. Sign, Signal & Annotation : ● Integrated Design of Different kind of Indicators like- Acrylic Sign Board, LED Sign Board, Neon Sign Board, Reception Sign Board, Safety Sign, PVC Letters, Glow

Sign Board, Customized Display Boards, Overhead

Signage, Metal Nameplates, Commercial Sign Boards,

Outdoor Signs, Electronic Sign Boards etc. should be

provided in the design & construction.

● Digital LED Signboard with the features of-

Excellent visibility (even in daylight); Good quality at reasonable

price and light weight; Simple installation, Safe to touch and

clean; Changing color for attracting attention; Extremely low

power consumption.

● Should be provided the Accessories like Adaptor and chains

etc.

14. Approval & Test : Over all Approval should be taken from concern office of the BPDB.

Materials & Item (if required) should be tested from any authorized

Institutions of Bangladesh furnished by the Contractor.

Thecolumnsofthegroundstoryshallbeextendedaboveroofleveltopermitstarterbarstobeleftinplaceforafuturestory.Anexternalconcreteopenstaircaseshallbeprovideduptotheroof.TheroofshallbeaRCCslabdesigned for5kN/m2liveloadforallfloorasperBNBC.Ifafuturestoryisnotrequired,afixedladderofgalvanizedsteelshallbeprovideduptotherooforprovidetemporaryCIsheetshadeoverthestaircaseasperdirectionoftheemployer.

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The main entrance to all buildings shall be shaded, either by a projection of the roof over theentrance verandah or by a separate roof at a lower level. This area of roof shall also be limeterracedanddrainedbyrainwaterpipes.Theheadofeachdownpipeshallbefittedwithanenlargedhopperandpurposemadecast irongrillsetintorecessintheroofprojection.Windowopeningsshallbefittedwithprotrudingconcretesunshadesaboveandatthesidesoftheopenings.

All external walls shall be 250 mm first class brick work also provide 237.4mm x 68.75mm x12.5mm(9.5”x2.75”x0.5”)oranyotherstandardsizesofMirpurceramicsfacingbricksorsimilarapproved,orrenderedRusticTilesasrequiredbythearchitecturalplan.Theinternalwallsshallbegenerallyof125mmthickfirstclassbrickwork.InternalwallsshallallberenderedandreceiveonesealercoatplustwofinishingcoatsofPlasticemulsionpaint.AllbrickworkshallbetiedintotheRCCframebygalvanizedties.

Externally, rendered walls shall receive primer plus two finishing coats of PEP acrylic externalqualitypaintorsimilarapproved.

Theheightofcontrolroomsshallbeprovidedabout1(One)meterclearanceoverthetopofthecabinets to the underside of the false ceiling. In the switch gear rooms, about1meter clearanceshallbeprovidedovertheswitchgeartotheundersideroofslabbuttheContractorshallprovideagreaterclearanceifitisrequiredtoremoveequipment.Theclearancemaybereducedbelowdownstandbeamsprovidednoequipmentisrequiredtoberemovedfromthetopoftheswitchgear.Allroomsinanybuildingshallbeoneheight.

Control buildings housing switch gear and control equipment shall include a cable basement tofacilitates connection to the equipment. Basements shall be constructed so as to protect thebuildingsubstructurefromwaterinaccordancewithBS8102.

7.4.2.2 Ground conditions, Foundations and Site Investigation

(a)FillSitesOnfillsiteswherethedepthoffillexceeds3metersthecontractassumespiledfoundationsshallbe installed below buildings. If placed foundations are found to be unnecessary in the final siteinvestigationreport,areductionincontractvalueshallbeagreedonthebasisofschedulerates.Pilesshallbeconcrete(cast insituorpre-cast)complyingwithBS8004.Wheretimberpilesareused,adequatestripfootingsshallbeprovidedtosupportthebuildingafterthetimberpileshavedeterioratedbywhichtimesettlementwillbecomplete.

On every fill site the Contractor shall prove that his switchyard foundation will not suffersettlement greater than 20 mm by constructing a foundation and load testing this to twice thedesignbearingpressureforaminimumof20days.

Outdoorequipmentshallbeprovidedwithspreadfootings.TheContractorwillbeprovidedbytheEmployerwithasurveyofsoillevelspriortofilling.TheContractorshallimposethesitelayoutonthesurveytocheckforunevendepthoffillbelowanyfoundationandwhereunevendepthoffillexistshisfoundationproposalsshallrestrictfinaldifferentialsettlementtoa1in400slopes.

Ifafillsitehasnotbeenexposedtoonewetseasonbeforefoundationworkstarts,theContractorshall flood the site to a depth of 50 mm for 10 days (Not required on hydraulic fill site). Thisrequirement is because silty sands will generally compact to a denser condition on first timeflooding.

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On all fill sites the Contractor shall pipe rainwater from pipes down to paddy level and shallpreventwaterpondinopenfoundationsandbackfillallfoundationsassoonaspossible.

TheContractorshallmonitorsettlementofthefill(byplacingconcreteposts50x50x750mmdeepona10metergridandtakingreadings)at30dayintervalsfromthetimeheisgivenaccesstoeachfillsite.

When a fill site is handed over to the Contractor, The Contractor shall become responsible formaintainingtheentirelyofthefillingoodcondition,includingallbatterslopes.(b)UnfilledSites

Originaldeltalevelsaregenerally4metersbelowroadlevel.Thereforemostsitesarehistoricallyfillsitesbutfillsettlementcansensiblybeconsideredcomplete,wherefillisover3yearsold.

(c) Site Investigation TheContractormayappointasubcontractortocarryoutthesiteinvestigationsbutallworkandalllabworkshallbewitnessedbyoneofhisownstaffwhoshallcountersignallrecordeddata.The site investigations and analysis of the data in a final report giving full details of foundationproposalsshallbecompletedateachsitebytheprogrammeddate.Boreholesshallbetakenona25metergridwithat leastthreeadditionalboreholesbesideeachbuilding.Additionalboreholesmayalsoberequiredwhereunevenfilldepthisencountered.Theboreholesshallbelocatedtoanaccuracyof±0.5mandshallbelocatedtositelayout.Boreholesshall be a minimumof20 meters depth or twice building footing width, whichever isgreateroraspersitecondition&decisionoftheemployer.Allboreholesshallbebackfilledwithcompactedsand.Ineachboreholethefollowingtestsshallbecarriedout:Standardpenetrationtestsat1.5meterintervals.Undisturbedsamplesshallbetakenataround1.5metersdepthand3metersdepthandtestedbyunconfinedcompressiontests.Onedimensionalconsolidationtestsshallbecarriedoutonundisturbedsamplestakenat1,5,3and4.5 meters depth. The samples shall be saturated and the range of applied pressure shall fullyreflected the in situ conditions. Graphs showing void ratio(e) and applied pressure shall besubmitted along with the coefficient of compressibility for the range of loading anticipated. Mvshallbeinm2/MNandshallberecordedateachstressincrement.Thecoefficientofconsolidation,cv,shallbegiveninm2/year.Particlesizeanalysisshallbecarriedoutforeachstratumandspecifiedgravity,moisturecontent,liquidlimitandplasticlimitdetermined.Groundwaterlevelshallbedeterminedbydippingtheboreholes.Wherecollapseoftheboreholesoccurs,casingshallbeusedandleftinuntilthewaterlevelremainsconstantfortwodays.IncohesivesoilsavanetesttoBS1377:part9shallbecarriedoutatthreedifferentdepths.TheContractorshallchecktheaggressivelyofsoilandgroundwaterateachsitetoconcreteandtakeallmeasuresnecessarytoensurethelongtermdurabilityofconcrete.(d)SiteInvestigationReport

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The reportshall be submittedby the key dateat each site given in the program. TheContractorshall submit 2 copies of the report to the Engineer. The report shall propose full details offoundationsandloadingthereonandshallprovideestimatesoflikelysettlementsanddifferentialsettlements.ThereportshallbetheworkoftheContractor’sownfoundationEngineers.IftheContractorusesalocalsiteinvestigationcontractor,heshallappointoneofhisownstafftooverseetheentireoperationandeachpieceofdatashallbecountersignedbythisperson. TheContractorshallsupply,installandtestatleastoneofthetypesofPileinaccordancewiththeapproveddesignandthedrawingshowingthePilingarrangement.EachPileshallbesuiteexistingthesub-strataatthesite. (e)Foundations

Theminimumdepthofallfoundationsshallbe: (i) Transformerbasesbound 0.9m (ii) Allotherswitchyardfoundations 1.1m (iii) Controlbuildingfoundations, 1.5m includingallwallfoundations andinternalwallfoundations

(iv) Boundarywallfoundations 1.1mAllformationsshallbehandrammedormechanicallycompactedbeforeplacing70mmminimumthickness of Class B concrete blinding, within 24 hours of bottoming excavation, which blindingshallproject300mmminimumdistancebeyondallfootings.EachfootingshallbeinspectedbytheEngineer.Wheresoilconditionispoor(onfillsitesoralreadyfilledsites)orwheretheContractorleavesfoundationsexposedandsoilconditionsdeteriorate,oneofthefollowingmeasuresshallbecarriedoutasagreedwiththeengineer. (i) Blindingdepthandprojectionshallbeincreased (ii)Softsoilshallberemovedandreplacedwithcompactedvitisandwiththetop200

mmconsistingofvitisandandbrickchips.ThecostofthisworkshallbebornebytheContractor.Betweencolumnfootingsallwalls, includingallinternalwallshallbeprovidedwithareinforcedconcretestripfootingofminimumdimension800mmwideby250mmdeepplacedatthesamelevelascolumnfootingsandlinkedstructurallytothefootings.Inadditioncolumnfootingsshallbetiedatfoundationlevelandalsofloorlevelbybeamstoeveryadjacentcolumninbothorthogonaldirections.Thesebeamshallbedesignedtoresist1in200differentialsettlementwithoutdistressandshallbecapableofresistingtheearthquakeloadofChittagongregionasperBNBC2012Thedeepestpartsofanyfoundationsshallbecompletedfirst.Allfoundationsshallbecompletedandbackfilled,includingallcabletunnelandcabletrenchworkinsidebuildings,beforewallsareraised above floor levels. All other foundations shall be back filled within 7 days of completingconcerning.Allexposedconcreteandoutersurfacesofcabletrenchesandcabletunnelsshallreceivetwocoatsof bitumastic paint before back filling to reduce ingress of water. The Concrete surface shall begroundsmoothandallairholesetc.filled(rubbeddownwithacementslurry)beforepainting.TheContractorshallmonitorsettlementofallfoundationseachmonthandreportthissettlementtotheEngineeruntilsettlementhasreducedtolessthan1.5mmin3months.

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Thetopsofallfoundationsshallterminate1000mmabovesiteaveragefinishedsurfacelevel.Allexposededgesshallhave20mmx20mmchamfers.Excavation shall only be carried out when the ground water table at least 1000mm belowfoundation level. The excavation shall be kept dry during the construction period by providingsumps and pumps as required. During the rain season, shelters shall be erected over all openexcavations.AnyoverexcavationshallbefilledwithClassBconcrete.Allbackfillshallbecompletedto95%maximumdrydensityasdefinedbyBS1377testmethod.2.5Kgrammer.Before starting foundation work the Contractor shall clear all sites of trees, tree roots shrubs,debris,surplussoil,andanybuildings.Foundationsshallbedesignedtoresistuplift,assumingthewatertableisatgroundlevelandtheweightofsoilrestingonafoundationisthatincludedwithina150frustum.Onfillsiteswherethedepthoffillexceeds3meters,theContractorshallprovidepiledfoundationsinaccordancewithBS8004forcontrolbuildings.Iftimberpilesareused,adequatestripfootingsshallbeprovidedtosupportthestructureafterthetimberpilehasdeteriorated,bywhichtimethefillwillbefullyconsolidated.OneworkingpilechosenbytheEngineershallbeloadtestedateachsiteto150%ofdesignloadinaccordancewithBS8004. 7.4.2.3 Drainage The entire surface within boundary walls shall be of uniform sloping site, sloping at q in 150minimumslopetoopenchannelsaroundtheentireperimeter.Thesechannelsshallbedesignedfor a rainfall intensity of 60 mm per hour. Out side the boundary wall the contractor shall beresponsible for drainage up to 20 meters from the wall and willat some sitesneed to constructoutletswithsuitableerosionprotectiondowntopaddylevel.Theconcretewallofcabletrenchesshallprojectatleast70mmabovebrickpavingleveltopreventrunoffenteringthecabletrench.Thefloorsofallcabletrenches/tunnelsshallbeslopedtosoakways.The cable trenches shall be free from surfacewater drainage. If the cutoffarea exceeds 30 m2 itshall be drained by a 200 mm minimum diameter concrete pipe to the boundary drain. TheContractor’s drainage design shall avoid all pond water to avoid forming a mosquito breedingground.Alldrainagepipeworkwithinbuildingsshallbeductileiron,generallyof100mmdiameter.Floordrainsshallbeplacedineachbatteryroomandtoilet.External Pipe work shall be 150 mm minimum diameter concrete pipes at a minimum depth ofinvert of 700 mm. Where pipes, including existing pipes along with site, are less than 400 mmaboveadjacentfoundationstheyshallbesurroundedinconcrete.Whererequired,drainagepipesshallbekeptbelowcables,allowing1.1mcovertotopofpipes.

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Manholesshallbeofbrickconstructionwith600mmx600mmclearopeningsandairtightductileironcoverstoBSEN124.Manholesshallbelocatedateachchangeofdirection.Minimumfallonallpipelinesshallbe1in80.Manholeshallnotbelocatedinroads.The Contractor shall be responsible for all negotiations with local authority WASA where aconnection to a public sewer is proposed. Where high water levels in public sewers may causeeffluent to back up into a site, non return valves shall be fitted. The Contractor shall provide allprotection required to existing sewers and shall deepen foundations, including boundary wallfoundations,whererequiredallfoundationsarebelowadjacentsewers.TheContractorshalldrawlongitudinalsectionsofallpipelines.Eachcontrolbuildingshallbeprovidedwithaseptictankdesignedfor10usersandasoakawayofopen brick construction 11 m deep by 2.2m diameter filledwithbroken bricks. The septic tankshallbelocatedatleast15metersfrombuildings.Otherbuildingsshallhaveseptictanksdesignedfortherequirednumberofusers.Allfouldrainsshallventedbyaventpipitoaboverooflevel.Theinnersurfaceofallmanholesandseptictanksshallbepaintedwith2coatsofbitumasticpainttoprotect it against sulphate attack. The septic tank shall have access holes directly over the inletpipes and outlet pipes. Where public sewers exist alongside a site, the Contractor shall connectdirectlytothefoulsewer,providedeffluentfromtheseweristreated.TheContractorshallconstructthedrainagefirsttoensurethatatnostageisrainwaterpondedonanypartofthesite.Allrainwatershallbeabletorunoffthesiteorshallbeimmediatelypumpedoff site by the Contractor. The Contractor shall complete all necessary drains before casting anyroof and large concrete area which will create large run off. The condensate drains for the airconditioningshallalsobeconnectedtothedrainage.Twoventsofminimumheight2.2mshallbeprovidedoneachseptictank.

Ifatown’swatersupplyisunreliable,theroofrainwatershallbecollectedinanundergroundtankofstandardEmployer’sdesign.ScopeofthisworkshallbeagreedatBidstage.7.4.3 Earth Work 7.4.3.1 Scope Thisclausecoverstheperformanceofallworksinconnectionwiththerequiredexcavationforthevarioustypeoffoundationsandequipment,asshowninthedrawing,oranyotherexcavationandbankingthatmaybenecessaryduringtheprogressofworksincludingtheremoval,useordisposalofallexcavatedmaterials.

7.4.3.2 Clearing

(1)Clearingshallmeanincludetheremoveoftreesandshrubs,stumpsandotherobjectionablemattersfromtheareanecessaryfortheworks.ThecontractorshallcutandremovethemfromtheprojectareaorturnthemasapprovedbytheEngineer.

(2) Bynomeansshallthecontractorfellanytreesoutsidethepremiseoftheconstructionsitewithout permission of the parties concerned even if such trees cause obstacle againstsmooth execution of the work. Therefore, any such trees shall be felled upon negotiationwithandpermissionofthepossessor.

7.4.3.3 Excavation

(1) Excavation under this section shall consist of the removal, hauling, dumping andsatisfactorydisposalofallmaterialsfromrequiredexcavations.

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(2) The excavated slope surface shall be protected against any erosion due to heavy rainsduring construction period. Should any damage be caused on any face of slope, thecontractorshallimmediatelyrepairanysuchdamageathisexpense.

(3) Excavationshallbecarriedoutbyadoptingasuitableexcavationforthegroundsoasnottoloosen the ground outside the excavation. If necessary, temporary sheeting shall beconstructed.

(4) During excavation, work shall be performed carefully so as not to cause any damage toadjacentstructuresandburiedstructures.

(5) If the excavated material is to be temporarily stockpiled, designated spaces shall be keptfromtheshoulderoftheroadwhileconsideringtheearthpressureattheexcavatedsurfaceandtheworkingspace.Temporarysheetingorothersuchstructures,ifnecessary,shallbeconstructedsothatthestockpilecanbeprotectedfromdamageorbeingwashedaway.

(6) Excavationofroad,ifany,shallbedoneinsuchamannerasnottohampervehiculartraffic.Ifexcavationistobeperformedinthevicinityofresidences,appropriatecareshallbetakensoasnottohinderthepassageofresidents.

Spoils,materialsandequipmentshallbecarefullyhandled.(7) Aftercompletionofexcavation,excavatedwidthsandbottomsshallbesubjecttoinspection

bytheengineer.

(8) Blastingshallnotbeemployedduringexcavation.

(9) Any and all excess excavation for the convenience of the contractor or over-excavationperformedbythecontractorforanypurposeorreason,exceptmaybeorderedinwritingby the engineer, and whether or not due to the fault of the contractor, shall be at theexpenseofthecontractor.Allsuchexcessexcavationandotherexcavationshallbefiledattheexpensebythecontractorwithmaterialsapprovedbytheengineer.

(10) Thecontractorshallbeentitledtorequesttheengineerinwritingtochangetheexcavationlineasrequiredaccordingtothesoilconditionsofthefoundationfollowingtheprogressofexcavation. In such a case, upon excavation up to the laid excavation line, the contractorshall prepare the detailed design drawing of the said foundation and submit it to theengineerforhisapproval.

(11) All objectionable materials such as, oil, mud, rock fragments, loose rock, chips, mortar,organicmattersandstagnantwater,shallberemovedfromthesurfaceofthefoundation.

7.4.3.4 Sheeting

(1) Sheeting shall be of the type that is suitable to the condition of foundation and Groundwaterandshallhaveasafestructure.

(2) If sheet piles on retaining piles are to be driven at the piling location in the vicinity ofburied structures, where they shall be investigated and confirmed by manual trenchexcavation etc. prior to piling in order to protect these structures from being damagedwhenpilesaretobepulledout,carefulnessshallbetakenintoaccounttocausenodamagetotheburiedstructures.

7.4.3.5 Banking

Foundationofbankingshallbetreatedasfollows:

(1) Anymaterialhavingaharmfuleffectonbankingshallberemoved.(a)Where inflow of ground water is expected, it shall be treated so as not to cause

inundation.

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(b)In case of sloped ground with unfavorable conditions, such as unsuitable soil, poordrainage,etc,amethod,suchasexcavatingthegroundintostepsinadvanceinordertoincreaseitsstability,shallbeplannedandreportedtotheEngineer.

(2) Unless otherwise specified, settlement allowance shall be 3 per cent of the height of the

bankingandthesurfaceshallbegradedevenlywithin=5cm.(3) Materialsforbankingshallnotincludeanyharmfulmaterials,suchasfertilesoilorpieces

sowood.(4) Materialsforbankingshallnotbeofanextremelyswellingnature.(5) Impermeable clay shall not be used for back-filling of a structure which is susceptible to

earthpressure.(6) Bankingshallbeformedbyspreadingsoiloflessthan50cminthicknessandbysufficiently

compactingeachlayer.(7) Thetypeofcompactorshallbeonethatissuitableorbandingmaterials.(8) Materials forbankingshallbeso treatedastohaveoptimumwatercontent inpercentof

dryweight.(9) Rocksshallbespreadoutevenlysoasnottoformanyvoidspace.(10) Temporaryfacilitiesshallnotbeburiedinbanking.Ifitbecomesinevitabletodoso,itshall

bereportedtotheengineerandshallbeapprovedbytheengineer,uponwhichappropriatemeasuresshallbetakentopreventanyunfavorableeffectonthebanking.

(11) Asastandard,extentofsatisfactorycompactionshallbeasfollows: K75=1.5Kg./cm3ormore Where:K75isacoefficientofbearingcapacitydeterminedbytheplateloadtest. When required by the engineer, the contractor shall perform in-sity tests and

penetration test to confirm the extent of compaction and the result shall be submitted totheengineer.

(12) AnybankingworkonrainydayshallbecarriedtouponapprovaloftheEngineer.7.4.3.6 Back-Filling(1) Back fillingshallbeexecutedasconstructionproceedsalongwiththeremovalofshoring

andothermaterialsatthebackfillingsite. Whensheetingistobeleftandburiedinordertopreventshearfailureofsoilordue

to some other inevitable reasons, it shall be done so according to the direction of theengineer.

(2) Exceptthosewhicharespecifiedinthespecificationsorthedrawings,allthematerialsfor

backfillingshallbeinaccordancewiththeclausesof“Banking”2.5ofthesespecifications.(3) Iftheinflowofwaterexistsatthesiteofbackfillingitshallbeappropriatelytreated.

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(4) Inbackfilling, thelayerofspreadingshallbearound50cmor lessper lift,anditshallbegradedashorizontallyaspossible,andshallbesufficientlycompactedbyhydraulic fillingorbyuseofanappropriatecompactorsuchasarammer.

(5) Extentofcompactionshallbesuchthatitwillpreventfuturesettlementandsuchthatthedesignatedbearingcapacitycanbeobtained.Ifnecessary,theextentofcompactionshallbemeasuredbyaconepenitrometeretc.andtherecordshallbesubmittedtotheengineer.

(6) Ifthereisanysurfaceorburiedstructureownedbythepublicorthethirdpartyatthesite

of back filling, care shall be taken so as to cause no harmful effect to them, and theexecution of the workshallbe carriedout following direction by the engineer and in thepresenceofrelevantadministrators.

(7) Forbackfillingadjacenttoastructure,compactionandbackfillingshallbecarriedoutin

suchamannerthatwillpreventdamagetothestructure. Nostonesorthelikeshallbeusedforbackfilling.7.4.3.7 Disposal of Excavated Materials(1) Spoilsproducedbyexcavationshallbepiled,graded,slopedordisposedofatthelocations

specifiedbytheBoardorEngineeranditshallbesubjecttoinspectionbytheengineer.

Spoil,whosedisposalareasarenotspecifiedbytheengineer,shallbedisposedofbythecontractorathisresponsibility.

(2) In transporting the spoils, care shall be taken so as to neither hamper traffic nor cause

troubletothethirdpartybyscatteringthespoilovertheroad.7.4.3.8 Gravel Layer

(1) Gravelandrubbleproducedlocallyshallbeused.Gravellayershall,inprinciple,belaidinasingle layer with no large gaps, stand on end and interstices shall be filled with granulargravel.

(2) Thecompactionshallbeexecutedbyacompactionmachine(rammers,etc.)(3) Gravellayershallbewellcompactedtogetherwithcoveringgravelandshallbegradedand

finishedtothedesignatedlevel.7.4.4 Piling 7.4.4.1 Pile Driving(1) Pilesshallbedrivenbyapiledriver,suitableforthetypeandsizeofthepiles,geological

conditions and construction environment, and in such a manner as to cause no publicnuisance,suchasnoise,tothethirdparty.

(2) Themethodforconstructionjointofpilesshallbesubmittedinwritingtotheengineerand

shallbesubjectforapprovalbytheengineer.(3) Records shall be kept during the poling operation and these shall be submitted to the

engineer.

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(4) Pilesshallbedrivenverticallyandattheexactlocationsindicatedinthedrawings,andpiledrivingshallbecontinuouswithoutinterruptiontoavoiddeviationofpilehead.

(5) Capsandothersuitablematerialsshallbeusedasacushiontoprotecttheheadofpiles.(6) Toward the end ofdriving the amount ofpenetration shall be measured for each pole as

directedbytheengineer.(7) Shoulditbedifficulttodriveanypileuptothespecifieddepth,thecontractorshallcarry

outsuchpillingworkinaccordancewiththeinstructionsoftheengineer.(8) Method and equipment of pile driving to be employed for construction works shall be

subjecttoapprovaloftheengineerpriortoexecution.(9) When driving a group of piles, driving shall begin from the center and gradually moved

outward.(10) Wheneccentricerrorexceedstheallowablevaluesshowninthetablebeloworwhenapile

isdamagedorcreakedduringpilingoperation,itshallbereportedtotheengineer,andthepileshallbereplacedoranadditionalpileshallbedriven.TypeofFoundation Allowance RemarksAllfoundations 10cmorless

(11) Upon completion of piling, any void portions inside piles shall be filled back with soil

obtainedfromatsiteexcavation.7.4.4.2 Field Joining of Piles(1) Fieldjoiningofpilesshallbecarriedoutbyarcwelding.(2) Welders shall have not less than 6 months continuous experience in welding of pile, and

shallbequalifiedbyJISZ-3801,“StandardQualificationProceduresforweldingTechnique”,orequivalentBDS.

(3) AreweldingrodsshallbestandarditemsspecifiedinIETC(InternationalElectrotechnical

Commission)orequivalent“CoveredElectrodesforMildSteel”,orequivalent. Weldingrodsshallbecompletelydrypriortouse.(4) Theweldingsurfaceofparentmetalshallbecarefullycleanedofslag,moisture,dust,rust,

oil,paintorotherforeignmatter.(5) Therootfaceofsteelpipepileshallbe2mm,(6) Welding shall be performed carefully by selecting welding current and welding speed

whichensurecompletepenetrationofweldingroodtoavoidcracks in anyportionof theweld.

(7) Weldingshallnotbeperformedwhentheparentmetaliswetfromrainfallorwhenstrong

windsareblowing.However,whentheportiontobeweldedinsuitableprotected,weldingmaybeperformeduponapprovaloftheengineer.

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(8) If harmful defects or cracks have been found in the weld, the deposited metal shall becarefully chipped off and the affected part shall be re-welded and then inspected by theengineer.

7.4.4.3 Treatment of Pile head(1) The head of the pilesshall be cut to the designated level and shall be embedded into the

footing.(2) Thesteelpipepilesshallbeanchoredintothefootingbyamethodspecifiedotherwise. 7.4.4.4 Transportation and Handling Careshallbetakenintransportationadhandlingofpolesoastopreventdamagetothem.If the pile is damaged or deformed to the extent that it is impractical for the intended use, thecontractorshallrepairitpriortodriving,anditshallbeinspectedandapprovedbytheengineer.7.4.5 Reinforced Concrete Work 7.4.5.1 General(1) This clause covers the performance of all reinforced of all reinforced concrete work for

permanentstructuresinaccordancewiththedrawingsandthesespecifications.(2) Thecontractorshall furnishallmaterialsandequipment for theperformanceofconcrete

work.(3) Reinforced concrete work and plain concrete work shall comply with ACI (American

ConcreteInstitute),BNBC(BangladeshNationalBuildingCode)orequivalentstandard.(4) Covering (a)Thecoveringshallbeatleastonediameterofthereinforcement. (b)Ingeneral,thecoveringshallbeatleastthoseshowninTable-1.

Table-1 : Minimum Covering (mm)

Conditions Slabs Beams Columns Whennotdirectlyexposedtorainorwind 20 40 40 Largeandimportantstructure,orwhenexposedtoRainorwind

25 40 65

When effective coating is not applied on theportion Which may be subjected to injuriouschemicalreaction

Duetosmoke,acid,oil,salts,etc. 37.4 50 75

(c) Incaseoffootingsandimportantmembersofastructureitisrecommendedthatthecoveringbeatlest7.4cmwhenconcreteisplaceddirectlyfacingtheground,andatleast 5 cm for bars with diameter of more than 16cm and 4 cm for bars with thediameter of less than 16 mm when the concrete is buried and directly facing thegroundorwhenitissubjectedtosevereweatherconditions.However,thecoveringat

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thebottomsideofslabsmaybeatleast2.5cmeveniftheportionofitissubjectedtoextremeweathercondition.

(d) The covering in structures which are required to be especially fire-proof shall bedetermined based on the temperature of the fire, duration, characteristics ofaggregatetobeused,etc.

7.4.5.2 Quality of Concrete

(1) GeneralConcrete shall have the uniform quality with the required strength, durability, water

tightnessetc.

(2) Strength

(a) Thestrengthofconcreteshallgenerallybebasedon28dayscompressivestrength.

(b) CompressiontestsforconcreteshallbeperformedinaccordancewithACI,BNBCorequivalentstandard.

7.4.5.3 Materials

Materials used for the construction of buildings shall conform to standard specifications

listed in this part of the Code. Any deviation from the type design or architectural detail

fromthosespecifiedinthesestandardsmaybeacceptedbytheBuildingOfficialaslongas

thematerialsstandardsspecifiedthereinareconformedwith.

7.4.5.3.1 CementCementforshallbeOrdinaryPortlandCementcomplieswiththestandardslistedasfollows:

BDS232:1974,PortlandCement(OrdinaryandRapidHardening)orASTMC150,Portland

Cement;ASTMC91,MasonryCement;ASTMC595,BlendedHydraulicCements.

Cement for other than masonry shall conform to the following standards: BDS 232,

Portland Cement (Ordinary and Rapid Hardening); BDS 612, Sulphate Resisting Portland

Cement-Type A;ASTMC150, Portland Cement; ASTMC 595,BlendedHydraulic Cements;

andtoothersuchcementslistedinACI318.

7.4.5.3.2 Water

(1) Watershallbefreefrominjuriousamountsofoils,acids,salts,organicmaterialsorothermaterialsthatmaybedeterioustoconcrete.

(2) Seawatershallnotbeusedinmixingconcreteforreinforcedconcrete.

7.4.5.3.3 Fine Aggregate

(1) General Fine aggregate shallbeclean, strong, hard, durable, suitably graded and free from

injuriousamountsofdust,mud,organicimpurities,saltsetc. Beachsandshallnotusedforconcrete.

(2) Grading

Fine aggregate shall consist of large and small particles suitably mixed, and itsgradingshall,asastandard,bewithintherangeshownintable2.

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Table-2 : Standard Grading of Fine Aggregate

NominalSizeofSieve(mm)

Weightpercentageofthosepassingasieve

Nominalsizeofsieve(mm)

Weightpercentageofthosepassionasieve

10 100 0.6 25–65 5 90–100 0.3 10–35

2.5 80–100 0.15 2–10 1.2 50–90

SieveanalysisshallbeinaccordancewithJISA1102,orequivalentBDstandard.

7.4.5.4 Coarse Aggregate

(1) General Coarseaggregateshallclear,strong,hard,durable,suitablygradedandfreefrominjurious

amountofflakes,elongatedpieces,organicimpurities,saltsetc.(2) Grading Coarseaggregateshallconsistof largeandsmallparticlessuitablymixed,and itsgrading

shallbewithintherangeshowninTable3asastandard. SieveanalysisshallbeperformedinaccordancewithJISA1102,orequivalentBDstandard.

Table-3 : Standard Grading of Coarse Aggregate

SS(mm) Weightpercentageofthosepassingasieve

SA(mm) 50 40 30 25 20 15 10 5 2.5

95 40 10 0

40 100

100 65 30 5

95 30 0 0 25 100

100 70 10 5

SS :NominalSizeofSieve SA :SizeofAggregate 7.4.5.5 Reinforcement

Reinforcement in masonry shall conform to the standards listed as follows: ASTM A82,

Cold Drawn Steel Wire for Concrete Reinforcement; ASTM A615M, Deformed and Plain

Billet Steel Bars; ASTM A616M, Rail-Steel Deformed and Plain Bars; ASTM A617M, Axle-

Steel Deformed and Plain Bars; ASTM A706M, Low-Alloy Steel Deformed Bars; ASTM

A767M, Zinc-Coated (Galvanized) Steel Bars; and ASTM A775M, Epoxy - Coated

ReinforcingSteelBars.

7.4.5.6 Crushed Stones CrushedStonetobeusedascoarseaggregateshallconformtothefollowingstandards:

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BDS243:1963,CoarseandFineAggregatesfromNaturalSourcesforConcrete;ASTMC33,

Concrete Aggregates; ASTM C330, Lightweight Aggregates for Structural Concrete; ASTM

C637,AggregatesforRadiation-ShieldingConcrete;ASTMC332,LightweightAggregatefor

InsulatingConcrete;IS:9142ArtificialLightweightAggregatesforConcreteMasonryUnits.

7.4.5.7 Admixture

AdmixturestobeusedinconcreteshallbesubjecttopriorapprovalbytheBuildingOfficial

andshallcomplywithSec.2.4.5.1through2.4.5.5.

Chloride : Calcium chloride or admixtures containing chloride from admixture

ingredients shall not be used in prestressed concrete, concrete containing

embeddedaluminuminconcretecastagainstpermanentgalvanizedmetalforms,or

inconcreteexposedtosevereorveryseveresulphate-containingsolutions(seeSec

5.5.2.1ofPart6).

Standards : Air-entraining admixtures shall conform to ASTM C260. Water-

reducing admixtures, retarding admixtures, accelerating admixtures, water-

reducing and retarding admixtures, and water-reducing and accelerating

admixtures shall conform to ASTM C494, Chemical Admixtures for Concrete, or

ASTMC1017,ChemicalAdmixturesforUseinProducingFlowingConcrete.

Pozzolanas : Flyash(PulverizedFuelAsh)orotherpozzolansusedasadmixtures

shallconformtoASTMC618.

Blast Furnace Slag : Ground granulated blast-furnace slag used as an admixture

shallconformtoASTMC989.

Pigment for Coloured Concrete : Pigment for integrally coloured concrete shall

conformtoASTMC979.

7.4.6 Storage of Materials

7.4.6.1 Storage of Cement

(1) Cementshallbestoredseparatelyforeachtypeineithersilosordamp-proofwarehouses.(2) Silostostorecementshallbebuiltorequippedwithsuitablemeanssothatcementwillnot

beretainedatthebottomwithoutbeingconveyedout. Incaseofsackedcement,itshallbestackedonthefloorrisingatleast30cmfrom

thesurfaceortheground,andshallbestoredinsuchamannerastofacilitateconveyanceandinspection.Heightofeachstackshallbeatmost13sacks.

(3) Any portion of Cement which has hardened during its storage shall not be used at all.Cementstoredforlongperiodshallbetestedforitsqualitypriortoitsuse.

(4) Cement with excessively high temperature shall be used only after lowering the

temperature.

7.4.6.2 Storage of Aggregate

(1) Fineaggregate,coarseaggregateandotheraggregateofdifferenttypeandgradingshallbeseparatelystoredbetweeneach.

(2) When receiving, storing and handling aggregate, facilities shall be well maintained, and

handlingshallbecarefullyperformedsothatnosegregationof largeparticles fromsmall

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onesmayoccur,noforeignmaterialsmaybecomemixed,orincaseofcoarseaggregate,noparticlesmaybecrushed.

(3) Storage facility of aggregate shall be equippedwith a suitable drainage system, and shallhaveasuitablecapacitysothattheaggregatewithuniformsurfacewatermaybeusedandtheaggregatereceivedmaybeusedafterbeingtested.

(4) Inhotweather,aggregateshallbestoredinaplacewithafacilitytoavoiddirectexposuretothesunetc.sothatextremedryingortemperatureriseintheaggregatedoesnotoccur.

7.4.6.3 Storage of Reinforcement

Reinforcementshallnotbedirectlyplacedontheground,anditshallbestoredinawarehouseoraplacewithsuitablecover.7.4.6.4 Storage of Admixture(1) Admixtureshallbestoredsoas tobe free fromdustsandother impurities.Admixture in

powerformshallbestoredinsuchamannerthatabsorptionofwaterandhardeningareprevented,andadmixtureinliquidformshallbestoredinsuchamannerthatsegregationandchangeinqualityareprevented.

(2) Admixturematerialsshallbecarefullyhandledsoasnottobescattered.(3) Admixturematerialshallbestoredinsilosorwarehouseswhicharedesirablydamp-proof

andshallbeusedinthesameorderastheyarereceived.(4) Admixturestoredforalongperiodoffoundtohavechangedshallbetestedpriortoitsuse.

Should it be found in the test that the admixture does not possess the requiredcharacteristics,itsuseshallnotbeallowed.

7.4.7 Testing of Materials(1) The all materials (cement, water, fine aggregate, coarse aggregate, reinforcement,

admixture,etc.)tobeusedshallbeapprovedbytheengineerafterthecontractorsubmitstheresultsoftests.

(2) ThetestingmethodshallcomplywiththevariouscodesofASTM,ACI,BNBCorequivalent

standard.7.4.8 Mix Proportions 7.4.8.1 General (1) Mixproportionforconcreteshallbedeterminedinsuchamannerthattheunitquantityof

water is minimized while the required strength, durability, water tightness and theworkabilitysuitablefortheworkaresecured.

(2) Mixproportionforconcreteandresultsoftestmixingshallbedeterminedsoastoprovidetherequiredstrength,workability,uniformityanddurability.Theschemeofmixproportionshallbesubmittedtotheengineerforapproval,Theattachedformofsubmissionshallbeused.Thedesignstrengthsoftheconcreteshallbetheclassesindicatedbelow.

4Fc = 210kg/cm2 ForArchitectureandSwitchyard 4Fc = 180kg/cm2 ForTransmission 4Fc = 120kg/cm2 ForlevelingConcrete

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Where4Fcmeansconcretecompressivestrengthattheageof28days. Basicdesigndateformixingareindicatedinthetableherein.

Table – 4 : Basic Mix Data

Class Designstrength4Fc(kg/cm2)

Maximumsizeof

aggregate(mm)

Slump(cm)

Airentertainment

(%)

E 210 25 10–15 41 ArchitectureSwitchyard

B 180 40 10–15 41 Transmission C 120 40 10–15 41 LevelingConcrete

Note :1. Specificgravityindesign Cement–3.15,FineAggregate–2.62,COARSEAggregateandCrushedStones–2.622. RelationshipbetweenC/W(Cementwaterratio)andmaximumcompressivestrengthat28

days. ø28 = 210+215C/W

Concrete Mix Design Report Quantity(permixed1m3)(kg/m3)

Maximumsizeoraggregat

e(mm)

Slum Airentrain-ment

(%)

Maximum

water/cement

W/c(%)

Sandpercen-tageS/a(%)

WaterW

CementC

Fi Coarseaggreg

ate

Admixtures

mm-mm

mm-mm

7.4.9 Batching and Mixing 7.4.9.1 Batching (1) General Eachmaterialtobeusedinconcreteisobtained.(2) BatchingEquipment

(a) Batching method and batching equipment for each material shall be subject to theapprovaloftheengineerinadvance.

(b) Batching equipment for each material shall be inspected and adjusted, if necessary,

prior to the commencement of the construction work and periodically during theconstruction.

(3) Batchingofmaterials

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(a) Batchingshallbemadeinaccordancewiththejobmix.Testforsurfacewaterofthe

aggregate shall be in accordance with ASTM or equivalent or as directed by theengineer. Test for the quantity of the effective absorption of water, in case of driedeffectiveabsorptionofwater,shallbeasdirectedbytheengineer.

(b) Volumeofonebatchshallbedeterminedasdirectedbytheengineer.(c) Each material shall be batched by weight for each batch except the water and the

solutionofadmixture,whichmaybemeasuredbyvolume.(d) ErrorinthemeasurementineachbatchshallbeatmostthevaluesgiveninTable5.

Table-5 : Allowable Error in Measurements

TypeofMaterials PermissibleError(%)

Water 1 Cement&AdmixtureMaterial 2 Aggregate 3 SolutionofAdmixtureAgent 3

7.4.9.2 Mixing

Allconcreteshallbemixedthoroughlyuntilthereisauniformdistributionofmaterialsand

shallbedischargedcompletelybeforethemixerisrecharged.

Readymixedconcreteshallbemixedanddeliveredinaccordancewiththerequirementsof

"SpecificationforReadyMixedConcrete"(ASTMC94)or"SpecificationforConcreteMade

byVolumetricBatchingandContinuousMixing"(ASTMC685).

Jobmixedconcreteshallbemixedinaccordancewiththefollowing:

a) Mixingshallbedoneinabatchmixerofapprovedtype.

b) Mixershallberotatedataspeedrecommendedbythemanufacturer.

c) Mixing shall be continued for at least 90 seconds after all materials are in the drum,

unless a shorter time is shown to be satisfactory by the mixing uniformity tests of

"SpecificationforReadyMixedConcrete"(ASTMC94).

d) Materialshandling,batching,andmixingshallconformtotheapplicableprovisionsof

"SpecificationforReadyMixedConcrete"(ASTMC94).

e) Adetailedrecordshallbekepttoidentify:

i) numberofbatchesproduced;

ii) proportionsofmaterialsused;

iii) approximatelocationoffinaldepositinstructure;

iv) timeanddateofmixingandplacing.

(1) General

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Materialsforconcreteshallbethoroughlymixeduntilthemixedconcretebecomesuniforminquality.

(2) Mixers

(a) Mixersshallbeeithertiltingbatchmixersorforcedbatchmixers.(b) Anyconcretemixerstobeusedunderthisprojectshallbesubjecttoapprovalofthe

engineer.(c) Mixersshallbesuchthattheywillnotcauseanyseparationofmaterialsatthetimeof

discharging.(3) Mixing

(a) When charging a mixer, all the materials shall be charged uniformly andsimultaneouslyinprinciple.

(b) Mixingtimeshall,inprinciple,bedeterminedbasedontests.Asastandard,itshallbe

at least 1 minute and 30 seconds for tilting type misers and 1 minute for forcedmixers.

(c) Mixingshallnotbecontinuedformorethanthreetimesthespecifiedmixingtime.(d) Materialsfornewbatchshallnotbechargedintothemixeruntilalltheconcreteinthe

mixerisdischarged.(e) Mixersshallbethoroughlycleanedbeforeandaftertheiruse.(f) Concreteleftasmixedandcommencedsettingshallnotbeusedafterre-tempering.

7.4.10 Conveying and Placing (1) Priortothecommencementoftheconstructionwork,aplanofconveyingandplacingshall

bemadeandthisshallbesubjecttotheapprovaloftheengineer.(2) Concrete shall be conveyed by methods which will minimize separation and loss of

materials,shallbeplacedimmediatelyandthenshallbethoroughlycompacted.Evenwhenit is impossible to place the concrete immediately due to some special reasons, the timebetweenmixingandthecompletionofplacingshallnotexceed45minutes.

Duringthewaitingperiod,theconcreteshallbeprotectedagainstdirectexposuretothe sun, wind and rain, and the concrete left for a relatively long time shall be re-mixedwithoutaddingmywater.Noportionofconcretewhichhasstartedtohardenshallbeused.

(3) Whenextremeseparationisobservedinconcreteduringitsdeliveryorplacement,itshall

bemadeuniforminqualitybyre-mixing.7.4.10.1 Conveying (1) Conveying Equipmenttobeusedinconveyingconcreteshallbethosewhichcaneasilydeposit.

Shouldthedeliverydistancebelong,theyshallbeequippedwithsuchfacilityasanagitator.

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(2) Buckets Structure of buckets shall be such that they will not cause any separation of

materials when charging or dischargingconcrete and that the concrete can be easily andswiftlydepositedfromthem.

(3) BeltConveyors Should belt conveyors be used, they shall be suitably located so that they will be

suitablylocatedsothattheywillnotimpairthequalityoftheconcreteandtheendoftheline shall be provided with baffle plates and an elephant trunk so that the separation ofmaterialscanbeprevented.

(4) BuggiesandTrolleys Shouldbuggiesor trolleysbeused,a levelrunwayorpathshallbeconstructedso

thatseparationofmaterialswillnotoccurinconveyingconcrete.(5) Chutes

(a) Shouldanychutebeused,itshallbeadropchuteinprinciple.Thedropchuteshallbeconnectedtoanelephanttrunksothattheseparationofmaterialsisminimized.

(b) Openchutesmaybeused,onlywhenapprovedbytheEngineer.Eachopenchuteshall

beinclinedatuniformangleallalongitslength,andtheslopeshallbesuchthatitwillnot cause any separation of materials of the concrete to be placed. The distancebetween the bottom end of the chute and the surface on which concrete is to bedepositedshallbeatmost1.5m.thedischargingendshallbeequippedwithasuitableelephanttrunk.

7.4.10.2 Placing(1) Preparation

(a) Prior to the placement, the arrangement of reinforcement, forms etc. shall beapprovedbytheengineer.

(b) Prior to the commencement of the placement, it shall be certified that conveying

equipment and placing equipment are in conformance to the plan of placingspecifiedinClause-______

(c) Prior to theplacement,conveyingequipment,placingequipmentandthe insideof

forms shall be thoroughly cleaned to prevent foreign materials from being mixedintotheconcrete.Portionsexpected to face concreteandtoabsorbwatershallbemoistenedinadvance.

(d) Water in pits and sumpsshall beremovedprior to the placementof the concrete.

Suitable protective measures shall be taken so that water running into these pitsandsumpswillnotwashtheconcretejustplaced.

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(2) Placing

(a) ConcreteshallbeplacedinaccordancewiththeplanofplacingspecifiedinClause-_____should it be inevitable to change the placing method, it shall be so done asdirectedbytheEngineer.

(b) When concerning is done in hot weather, special attention shall be given to the

materials,placement,curingetc.(c) Portions such as the ground and foundations which may absorb the water in

concreteshallbethoroughlywettedpriortotheplacementofconcrete.(d) Temperatureinconcreteatthetimeofplacingshallbeatmost35oC.(e) Conveyingequipmentforconcreteshallbesuchthattheywillprotectconcretefrom

beingdriedorheated.(f) Concreteshallbeprotectedassoonas theplacement iscompletedor interrupted.

Specialcareshallbeexercisedtokeepthesurfaceoftheconcretemoist.(g) During the concerning operation, attention shall be paid not to disturb the

arrangementofthereinforcement.(h) Concrete shall be embedded into concrete with abundant mortar. Should any

notable separation of materials be observed during concerning, the concrete shallbe remised to obtain the uniform quality and necessary measures to preventseparationshallbetakenbeforetheplacingoperationisresumed.

(i) Concreteforonesectionshallbeplacedcontinuouslyuntilitiscompleted.(j) Concreteshall,inprinciple,beplacedinsuchamannerthatthesurfaceoftheplaced

concretewillbehorizontalwithinthesection.Oneliftinplacementshallbeatmost40cm,inprinciple.

(k) Shouldconcretebeplacedinlayers,eachsucceedinglayershallbeplacedwhilethe

onebelowitisstillplastic.Shoulditbecomenecessarytoplaceconcreteontopofalayerwhichhasstartedsetting,itshallbedoneinaccordancewithClause4.10.

(l) When height of the form work is great, it shall be provided with openings for

concrete placing, or the placement shall be done using from chutes in order topreventtheconcretefrombeingsegregatedorfromadheringtothereinforcementortotheformsabovethelayertobeplaced.

(m) Theheightoftheendofbucketsandhoppersshallbeatmost1.5mabovethelevel

ofplacement.(n) Shouldtherebyanywatercomingoutandaccumulatedduringtheplacement,the

concreteshallnotbeplacedfurtheruntilthewaterisremovedbyasuitablemeans.(o) When concerning high structures such as walls and columns continuously, the

consistency of the concrete and the rate of lifting shall be controlled in such a

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manner that separation of materials during the placement and the compaction isminimized.

7.4.11 Compaction(1) Inprinciple,internalvibratorsshallbeusedtocompacttheconcrete.Whenitisdifficultto

useinternalvibratorsinthecaseofthinwalls,formvibrationshallbeused.(2) Vibratorstobeusedshallbesubjecttotheapprovaloftheengineer.(3) Concrete shall be thoroughly compacted immediately after placement and shall be

thoroughly worked around the reinforcement and into the corners of the form. Whereconditionstakecompactiondifficult,batchesofmortarcontainingthesameproportionsofcement, sand and water as used in the concrete shall first be deposited to certify thecompaction.

(4) Whencompactionisachievedbyvibrators,itshallbeinsertedintothelayerbelowtheone

justplacedbyabout10cm.Thevibratorsshallbepulledoutveryslowlysothatnoholewillformintheconcrete.

(5) Whenconcerningistobecompactedbyinternalvibrators,thespacingandthetimeoftheir

applicationshallbeasdirectedbytheengineer.

7.4.12 Additional Placing

Shouldadditionalplacingbemadeontopofalayerwhichhasalreadystartedtoharden,itshallbethoroughlyandcarefullyworkedonasdirectedbytheengineersothatthetopandthelowerlayerbecomesmonolithic.(1) WetCuring.

(a) Concrete, after being placed, shall be sufficiently cured without being subjected toinjuriouseffectscaused by low temperature, drying, sudden change in temperature,etc.

Thecontractorshallreportthesaidmethodtotheengineerandobtainhisapproval.(b) Concreteshallbeprotectedfromvibrations,impactsandloadswhileitishardening.

(2) WetCuring

(a) Concretebeingplacedandcompactedshallbeprotectedfromthesun,wind,showersetc.

(b) Anyexposedsurfaceofconcretewhichhashardenedtoadegree that workscanbe

donewithoutimpairingitshallbeeithercoveredwithwetmats,canvas,sandetc.ordirectlywatered,andshallbekeptmoistenedcontinuallyforatleast5daysaftertheplacementincaseordinaryPortlandcementisused.

(c) Whensheathingboardsareexpectedtobecomedry,theyshallbewatered.

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7.4.13 Joints (1) General

(a) Location and structure of joints as shown and specified in the drawings shall beobserved.

(b) Should any joint not specified in the design be made, its location, direction and

methodofconstructionshallbedeterminedintheplanofconstructionsothatitwillnotimpairthestrengthandtheappearanceofthestructure,andthisshallbesubjecttotheapprovaloftheengineer.

(2) ConstructionJoints

(a) Construction joints shall be located where the shear acting there is as small aspossible, and with their face in perpendicular, in principle, to the direction ofcompressioninthemember.

(b) Shoulditbeunavoidabletomakeaconstructionjointatalocationwherelargeshear

isaction, itshallbereinforcedby formingtenorsorgrooves,orembeddingsuitablesteel.

(3) ConstructionofHorizontalConstructionJoints

(a) Sidedofthesurfaceofahorizontalconstructionjointintersectingtheformsshallbekeptashorizontalandstraightaspossible.

(b) Whennewconcreteisplaced,thesurfaceoftheoldconcreteshallberemovedofall

laitance,interiorconcrete,loosenedaggregate,etc.andshallbethoroughlywetted.(c) Prior to the placement of new concrete, the forms shall be tightened, and either

cementpasteormortarwiththesamemixproportionsasinconcreteshallbeappliedonthesurfaceoftheoldconcrete.

Theconcreteshallthenbeplacedimmediatelyandshallbecompactedsothatiswill

beintightcontactwiththeoldconcrete.(4) ConstructionmethodforVerticalConstructionJoints

(a) Whenaverticalconstructionjointistobemade,theformsatthejointshallberigidlysupported,andtheconcreteinthevicinityofthepointshallbethoroughlycompactedbyvibrators.

(b) Fresh concrete shall be placed after the surface of the aged concrete at the joint is

removedofthesurfacefilmorisroughenedandthoroughlywetted,followedbytheapplicationofcementpasteormortar,orafterthesurfaceistreatedasdirectedbytheengineer.

(c) Fresh concrete shall be thoroughly compacted at the time of placement so that the

freshandtheagedconcreteisintightcontactwitheachother.

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Itisrecommendedthatthenewconcretebecompactedagainafterasuitabledelaybyapplyingvibration.

7.4.14 Reinforcement Works 7.4.14.1 Processing of Reinforcement (1) Reinforcementshallbeprocessedtotheshapeandthedimensionasshowninthedrawings

byamethodwhichwillnotimpairthequalityofthematerial.(2) Reinforcementshallbeprocessedinordinarytemperature.Whenitisunavoidabletoheat

forprocessing,thewholeprocessshallbesubjecttotheapprovaloftheengineer. 7.4.14.2 Fabrication of Reinforcement(1) Priortofabrication,reinforcementshallbethoroughlycleanedandfreefromlooserustand

any other material which may impair the bond between the reinforcement and theconcrete.

(2) Reinforcementshallbeplacedtothedesignatedposition,andshallfirmlybefabricatedso

that itwillnotbedislocatedruiningtheplacementofconcrete.Erectionbars, ifrequired,shallbeusedforthispurpose.

Importantcrossingsofreinforcementshallbefastenedbyeitherannealedwireofat

least0.9mmindiameter.(3) Clearancebetweenreinforcementandsheathingboardshallbemaintainedcorrectlybyuse

ofspacers.(4) Reinforcement shall be always inspected by the engineer after the completion of

fabrication. 7.4.14.3 Joints of Reinforcement(1) Lap joints of reinforcement shall be made by lapping the required lengths and fastening

themtogetheratseveralpointswithannealedwireofatleast0.9mmindiameter.(2) Reinforcement projecting form the structure and exposed for future jointing shall be

protectedfromdamage,corrosion,etc.7.4.15 Forms and TimberingForms and timberingshall be so designedand constructedas to have the required strength andrigidity, to secure correct position, shape and dimension of the structure and to secure thesatisfactoryqualityinconcrete. 7.4.15.1 MaterialsMaterials to be used for the form and the timbering shall be selected based on the strength,rigidity,durabilityworkability,effectontheconcretetobeplaced.

403

7.4.15.2 Design of Forms(1) Formsshallbethosewhichcaneasilybefabricatedandstripped;jointsofsheathingboards

andpanelsshallbe forced inparallelwithorperpendicular to theaxisof themembersothatitwillhaveastructurewhichistightagainstmortar.

(2) Thestructureofformshallbesuchthatthecornersofconcretecanbemouldedevenwhen

itisnotparticularlyspecified.(3) Temporaryopenings,ifnecessary,shallbemadeatsuitablelocationstofacilitatecleaning

andinspectionoftheformsandtheplacingofconcrete.

7.4.15.3 Design of Timbering

(1) Suitabletypesoftimberingshallbeselectedandtheloadcarriedbythemshallbecorrectlytransferredtothefoundationbyappropriatemeans.

(2) As for the timbering for important structures, design drawings shall beprepared by theyshallbesubjecttotheapprovaloftheengineer.

7.4.15.4 Construction of Forms

Strippingagentsshallbeappliedontheinsideofthesheathingboard. 7.4.15.5 Construction of Timbering(1) Timberingshallbeconstructedsoastohavesufficientstrengthandstability.(2) An amountof the settlementof the form words due to the weight of the placedconcrete

shallbeestimatedandachambershallbeintroduced,ifnecessary,intheshoring.7.4.15.6 Inspection of Forms and Timbering(1) FormsandtimberingshallbeinspectedbytheEngineerpriortotheplacementofcontents.(2) Conditionofformsandtimberingshallbeinspectedduringtheplacementofconcrete. 7.4.5.7 Removal of Forms and Timbering(1) Formsandtimberingshallnotberemoveduntiltheconcretereachesastrengthrequiredto

carrytheconcreteweightandtheloadappliedduringtheconstructionwork.(2) Time and sequence of the removal of the removal of the forms and timbering shall be

subjecttotheapprovaloftheengineer. 7.4.15.8 Loading on a Structure Immediately After Removal of Forms and TimberingLoadingonastructureimmediatelyaftertheremovaloftheformsandtimberingshallbesubjecttotheapprovaloftheengineer.

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7.4.16 Finishing 7.4.16.1 General Whentheuniformappearanceshouldbeobtainedontheexposedsurface,specialattentionshallbegiventoplacetheconcreteforthepredeterminedsectioncontinuouslywithoutchangingthematerials,proportionsandthemethodoftheplacement. 7.4.16.2 Surface Not Facing Sheeting Boards(1) Surface of the concrete compacted and approximately leveled to the required level and

shapeshallnotbefinisheduntilthewatercomingoutceasesorisremoved.(2) Cracks formed after finishing but before hardening shall be removed by tamping or re-

finishing.7.4.6.3 Surface Facing Sheathing Boards(1) Concretewhichwillbeexposedshallbeplacedandcompactedinsuchamannerthatthe

surfacesolelycomposedofmortarwillbesecured.(2) Projectionsandlinesformedonthesurfaceofconcreteshallberemovedtoensuresurface

flatness.Honeycombsandchippedplacesshallberemovedandthesurfaceandthesurfaceshallbemoistenedandpatchedwithappropriatelyproportionedconcreteormortartobefinishedflat.

(3) Cracksformedaftertheremovaloftheformsduetemperaturestress,dryingshrinkage,etc.

shallberepairedasdirectedbytheEngineer.7.4.17 Quality Control and Inspection 7.4.17.1 GeneralMaterials ofconcrete, reinforcement, equipment’sand workmanship shall be controlled producereinforcedconcreteoftherequiredqualityeconomically.

7.4.17.2 Tests of Concrete

(1) Duringconstruction,thefollowingtestsshallbecarriedoutasdirectedbytheEngineer.(2) Airtest(3) Compressiontestofconcrete.(4) Others 7.4.17.3 Inspection of Forms and Timbering (1) FormsandtimberingshallbeinspectedbytheEngineerPriortotheplacementofcontents.(2) Conditionofformsandtimberingshallbeinspectedduringtheplacementofconcrete.7.4.17.4 Removal of Forms Timbering (1) Formsandtimberingshallnotberemoveduntiltheconcretereachesastrengthrequiredto

carrytheconcreteweightandtheloadappliedduringtheconstructionwork.

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(2) Time and sequence of the removal of the forms and timbering shall be subject to theapprovaloftheEngineer.

7.4.17.4 Loading on All Structure Immediately after Removal of Forms and Timbering

LoadingonastructureimmediatelyaftertheremovaloftheformsandtimberingshallbesubjecttotheapprovaloftheEngineer.

7.4.18 Finishing

7.4.18.1 General Whentheuniformappearanceshouldbeobtainedontheexposedsurface,specialattentionshallbegoverntoplacetheconcreteforthepredeterminedsectioncontinuouslywithoutchangingthematerials,proportionsandmethodoftheplacement.7.4.18.2 Surface Not Facing Sheathing Boards (1) Surface of the concrete completed and approximately leveled to the required level and

shapershallnotbefinisheduntilthewatercomingoutceasesorisremoved.(2) In order to determine the suitability of the curing method and the time to remove the

forms,andinordertocertifythesafetyforearlyloading,strengthtestsshallbepreformedonspecimenscuredundertheconditionsassimilaraspossibletothoseoftheconcreteatthesite.

Shouldtheresultofthetest indicatethat theobtainedstrengthofthespecimenis

muchsmallerthanthatofthespecimenscuredunderthecontrolcondition,themethodofcuringatthesiteshallbechangedasdirectedbytheEngineer.

(3) ForCompressiontestofconcrete,six(6)testspecimensshallberequiredforeachconcrete.

Three (3) specimens shall be tested for seven (7) or fourteen (14) days strength, theremainedthree(3)specimensshallbetestedfortwenty-eight(28)daysstrength.

Theexpensefortheabovetestsshallbeincludedistheunitprices.(4) Should it become necessary after the completion of the work, non- destructive test of

concreteortestsonconcretespecimenscutfromthestructureshallbecarriedout.7.4.18.3 Test of Reinforcement Bars Inthecasewherethereisnotestcertificateofreinforcementbars(millsheet)orincasetheEngineerdeemsnecessary,thecontractorshallcarryoutthecharacteristicstestofreinforcementbarsandobtainanapprovaloftheEngineer.7.4.18.4 Test Method Test method shall conform the those specified in ASTM, ACI, BNBC or equivalent, unlessdirectedotherwisebytheEngineer.7.4.18.5 ReportTheresultofthetestsshallbereportedtotheEngineerwithoutdelay. 7.4.18.6 Control of Concrete by Compressive Strength

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(1) Control of concrete by compressive strength shall generally be based on 28 days

compressivestrength.Specimens,inthiscase,shallbetakeninsuchamannerthattheywillrepresenttheconcreteofthestructure.

(2) Testresultsofcompressivestrengthtobeusedforthecontrolofconcreteshallgenerallybe

obtainedbyaveragingthecompressivestrengthspecimenstakenfromthesamebatch.(3) Shouldthequalityofconcretebecontrolledbythetestresults, itshallbeusethecontrol

test.7.4.18.7 Inspection of Quality of Concrete(1) ThecontractorshallsubmittotheEngineertheresultsofInspectionofQualityofconcrete

obtainedaccordingtothequalitycontroltestintheprecedingParagraph8.16.6andobtainandapprovaloftheEngineer.

(2) Shoulditbefoundintheinspectionthatthequalityoftheconcreteisnotsuitable,remedial

measures such as modifying the mix proportions, performance tests of equipment’s andfacilities, improvementoftheworkingmethod,etc.shallbetaken.Theconcreteplacedinthe structure shall be checked if it can perform the designated function and the suitablemeasures,shoulditbecomenecessaryasdirectedbytheEngineer.

7.4.19 Inspection of StructuresStructuresshallbeinspectedaftertheircompletionasdirectedbytheengineer. • Brick Masonry Work Priortocommencingthebrickmasonrywork,thesurfaceofbrickshallthoroughlybecleanedandsufficientlymoistenedinordertoensuresmoothadherenceofmortartothebricksurface. 7.4.20 Road Work TheConstructionworkofroadsshallbecarriedoutinaccordancewiththeDrawing. However,demolitionandrestorationofthepublicroads(includingprivateroads)shallbecarriedout according to the specifications designated the official in charge of road managementnotwithstandingtheprovisionsdescribedinthespecificationsandtheDrawing.7.4.20.1 Road Work Inside The Premises(1) Sub–grade

a) Any excavation and banking work required for sub-grade construction shall becarried out in accordance with the respective provisions in General ProvisionSECTION-2:EARTHWORKS.

b) The material required for banking and displacement shall be so placed that thefinishedthicknessofonelayeraftercompactionwillbecome20cmorless.

c) Thesub-gradesurfaceshallbefinishedbyproof-rollinginordertoobtainthecontact

pressure sufficient to permitsmooth traffic ofvehicles of8 tons or over should any

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defectsbedetectedasaresultofproof-rooling,suchdetectivesub-gradesurfaceshallbefinishedagaintothesatisfactionoftheEngineer.

d) Thefinishedsub-gradesurfaceshallbewithin+5cmofthedesignelevation.

(2) SubbaseCourse(a) The materials to be used for sub base course shall be in accordance with the

specification described in the Drawing. The Contractor shall submit a reportconcerningthequalityofmaterialsandthemethodsofsamplingtotheEngineerforapproval.

(b) Thefinishedsurfaceofsubbasecourseshallbewithin–10mmand + 5mmof the

designelevation.

(3) SurfaceCourse(Asphaltpavement)

(a) Priortocommencingpavement,thesidesofconcretesidewalk,manhole,etc.shallbecleaned,andmoltenasphalt,etc.shallbecoatedoverthesides.

(b) Thesurfacetobeseal-coatedandprime-coatedshallbefinishedintoevenlevel,andafterperfectingremovinganybloc,dustandotherforeignmatters,suchsurfaceshallbecuredanddried.

(c) The mixtures shall be spread uniformly, rolled and finished into the specifiedthickness.Then,thefinishedsurfaceshallbemeasuredinparalleltothecenterlineofthe load by using a 3 m straight line ruler. In this case, the depth of any concisesectionsshallnotexceed5mm.

(d) The Contractor shall submit a report on the materials to be used for pavement ofsurfacecourseandmethodthereforetotheEngineertotheEngineerforapproval.

(4) Inspection

The Contractor shall receive inspection of the Engineer during the courseandaftercompletionofsubbasecourseandsurfacecourseworks.

7.4.20.2 Public Road (Including Private Road)

(1) DemolitionofPavement DemolitionofPavementforpublicroadsincludingprivateroadsshallbecarriedout

socarefullyasnottocauseanyhazardouseffectuponthesurroundingportionsofcement,concreteorpavement.

(2) RoadKeepingandRestoration

(a) Theroadkeepingshallbeofaconstructionapplicabletotheprevailingsiteconditions

andsoprovidedasnottocauseanydangerortroubleagainsttraffic.(b) The contractor shall submit the drawings for road keeping to the Engineer for

approval.(c) TheContractorshallconstantlypatrolanyspotsofroadkeepingandexerthisutmost

efforts perform maintenance and repair of such roads in order to eliminate anytroubleagainstsmoothtraffic.

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(d) The Contractor shall carry out maintenance and repair of any pertinent roads socarefullyasnottocauseanytroubleagainstsmoothtrafficuntilthesaidroadshavebeenrestoredandtakenovertotheofficialinchargeofroadmanagement.

7.4.21 Drainage Work

(a) ThedrainageworkshallbeasdescribedintheDrawingandcarriedoutinaccordancewith General Provision SECTION-2 : EARTH WORK AND SECTION-3 : REINFORCEDCONCRETEWORK.

(b) The water – plumbing facility for drainage shall be of such a construction as not to

cause any trouble against the surrounding area and structure. The contractor shallsubmit the design and execution schedule for the water plumbing work to theEngineerforapproval.

7.4.22 Painting Work 7.4.22.1 General Thisclausecoversallpaintingappliedtosurfaceofplasterwood,andmetalindicatedintheDrawing.Nopaintingshallbeappliedtosurfacesofstainlesssteelcopper,bronze,brassorany/allsteelincontactwithconcrete.Paintingworkshallbeperformedbyskilledworkmen.SelectionofcolorshallbeasdeterminedbytheEngineer,unlessotherwisespecified. 7.4.23 Materials and Painting Coat 7.4.23.1 MaterialsMaterialstobeusedinthisclauseshallbeasfollowsandshallconformPAINTS AND VARNISHES

Water Based Paints

Waterbasedpaintsshallconformtothefollowingstandards:

BDS 500:1965 SpecificationforDistemperDry(underrevision);

BDS 1097:1984 SpecificationforPlasticEmulsionPaint.

PartIforInteriorUse;

Part2forExteriorUse;

IS 5410-1969 SpecificationforCementPaint,ColourasRequired;

IS 428-1969 SpecificationforDistemper,OilEmulsion,ColourasRequired

Ready Mixed Paint and Enamels

Readymixedpaintsandenamelsshallconformtothefollowingstandards:

BDS13:1960 Specification for Ready Mixed Paints, Varnish, Lacquers and

RelatedProducts(underrevision);

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BDS14:1960 Specification for Black Bituminous Paint, Brushing for General

Purposes(underrevision);

BDS 397:1964 Specification forReadyMixedPaint,Brushing,RedOxide Zinc

Chrome,Priming(underrevision);

BDS398:1964 Specification for Ready Mixed Paint, Spraying, Red Oxide Zinc

Chrome,Priming(underrevision);

BDS 399:1964 Specification for Aluminum Paint, Spraying for General

Purposes,inDualContainer(underrevision);

BDS400:1964 Specification for Aluminium Paint, Brushing, for General

PurposesinDualContainer(underrevision);

BDS401:1964 SpecificationforVarnish,Finishing,Exterior,Type-I,(Synthetic)

(Tentative)(underrevision);

BDS 402:1989 Specification for Ready Mixed Paint, Brushing, Finishing,

Semigloss,forGeneralPurposes(FirstRevision);

BDS 499:1965 Specification for Ready Mixed Paints, Brushing, for Road

Marking(white,yellowandblack)(underrevision);

BDS616:1966 Specification for Enamel, Brushing, Exterior (i) Undercoating,

(ii)Finishing,ColourasRequired(underrevision);

BDS 617:1966 Specification for Enamel, Brushing, Interior (i) Undercoating,

(ii)Finishing,ColourasRequired(underrevision);

BDS 926:1980 SpecificationforReadyMixedPaint,Brushing,PetrolResisting,

Air Drying, for Exterior Painting of Containers, Colour as

Required;

BDS 927:1980 SpecificationforReadyMixedPaint,Brushing,PetrolResisting,

Air Drying, for Interior Painting of Tanks and Containers, Red

Oxide(colourunspecified);

BDS 928:1980 Specification for Ready Mixed Paint, Brushing, Acid Resisting,

forProtectionAgainstAcidFumes,ColourasRequired;

BDS 973:1981 Specification forSpecificationandMethodsofTest forLinseed

StandOilforPaintsandVarnishes;

BDS974:1981 SpecificationandMethodsofTestforRawTungOilsforPaints

andVarnishes;

BDS 1005:1981 Specification for Ready Mixed Paint, Brushing, Finishing,

Stoving,Enamel,ColourasRequired;

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BDS1141:1986 Specification for Ready Mixed Aluminium Priming Paints for

Woodwork;

BDS1151:1986 SpecificationforPavementMarkingPaints.

7.14.3 Thinners and Solvents

Theseshallconformtothefollowingstandards:

IS 324-1959 SpecificationforOrdinaryDenaturedSpirit(revised);

IS 533-1973 Specification for Gum Spirit of Turpentine (Oil of Turpentine)

(FirstRevision);

IS 82-1973 Methods of Sampling and Test for Thinners and Solvents for

Paints(FirstRevision).

Varnishes and Lacquers

Thesematerialsshallconformtothefollowingstandards:

BDS401:1964 SpecificationforVarnish,Finishing,Exterior,Type-I,(synthetic)

(underrevision);

BDS1064:1983 SpecificationforVarnish,Staving;

BDS1065:1983 SpecificationforVarnish,AcidResisting;

BDS1066:1983 SpecificationforVarnish,Finishing,Interior;

IS 197-1969 MethodsofsamplingandTestforVarnishesandLacquers(First

Revision);

IS340-1978 SpecificationforVarnish,Mixing(FirstRevision);

IS346-1952 SpecificationforVarnish,Spirit,Clear,Hard;

IS347-1975 Specification for Varnish, Shellac for general purposes (First

Revision);

IS 348-1968 SpecificationforFrenchPolish(FirstRevision);

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7.4.23.2 Painting Coat Numberofcoatsshallbeasindicatedinthetablebelow.

Numberofcoats Materialtobepainted Primary Secondary FinishingSteel Outdoor 2 21 Indoor 2 1 1WoodOutdoor 1 21 Indoor 1 1ConcretePlasterOutdoor 1 21andboardIndoor1 11Acid–proofIndoor 1 3 1GalvanizedsteelOutdoor 2 1 1 Indoor 11Touch–upofgalvanizedsteel1 11

7.4.23.3 Workmanship

(1) SmoothFinished&softcoloredPlasticpaintshouldbeusedoverthePlasteringworkof

interiorwallandceiling.(2) Smooth Finished & Architectural approved colored weather coat should be used over the

PlasteringworkofExteriorwall.Somewhereshould beusedCeramicFacingbrick(Strip)/RusticTilesasperdirection/decisionof Architectureorapproved3Dview.

(3) Paintingshallbeappliedbyspraying,brushingorrolling.(4) Surfacestobepaintedshallbesmooth,dryandfreefromdirt,loosemillscale,rust,grease,

orotherdeleteriousmaterial(5) The contractor shall submit the samples and catalogue of paint of the Engineer for

approval. 7.4.23.4 ProtectionDropclothesshallbefurnishedandplacetofullyprotectallpartsorworkduringexecutionofthecontract.TheContractorshallbeheldresponsibleforpaintdroppingsoncementfloorandbase.Paint droppings shall be entirely removed, and damaged surfaces shall be repaired in a mannersatisfactorytotheEngineer.Noworkshallbeacceptedwhichshowslaps.Stains,flatorglossyspotsorimperfectionsinsurfaceoverwhichpaintorotherfinishisapplied.All rubbish, waste, or surplus materials shall be removed from time to time, and all woodwork,hardware,floorsorotheradjacentworkshallbecleaned.

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Allglassthroughoutthebuildingshallhaveallpaintorvarnishsportsandbrushmarksremoved,anduponcompletionofthepaintingwork,allglassthatisscratchedordamagedbythepainter’swork,shallbereplacedatthecontractor’sresponsibility.Hardwareandotherunpaintedmetalsurfacesshallbecleaned.CONTROL BUILDING 7.4.24 Temporary Work, Earth Work and Piling Work 7.4.24.1 General The work of the above items shall be specified in clauses “TEMPORARY WORK”, “EARTHWORK”and“PILINGWORK”inSection1“GENERALPROVISIONS”,unlessotherwisespecified.7.4.24.2 Materials of PileThepiletobeusedforControlBuildingshallbesteelpipepile(406.4x6.4) 7.4.25 Concrete Work 7.4.25.1 General ConcreteworkshallbeasspecifiedinClause“CONCRETEWORK”inSECTION1“GENERALPROVISIONS”,unlessotherwisespecified.7.4.25.2 Classification of Materials to Be Used for Buildings 7.4.25.2.1 Concrete Theclassification tobeusedforstructuralconcreteshallbe4Fc= 210kg/cm2concrete.(classE210-10-25) Theclassificationtobeusedfor levelingconcreteshallbe4 Fc= 120kg/cm2concrete.(classC120-10-40) 7.4.25.2.2 Reinforcing Bar

Reinforcementandweldingofreinforcementtobeplacedinconcreteshallconformtothe

requirementsofthissection.

a) Deformed Reinforcement : Deformed reinforcing bars shall conform to the following

standards; BDS 1313, Steel Bars and Wires for Reinforcement of Concrete; BDS 580,

Rolled Deformed Steel Bars (intermediate grade) for Concrete Reinforcement;

ReinforcementconformingtotheASTM,Standards:A615M,DeformedandPlainBillet-

Steel Bars; A616M, Rail-Steel Deformed and Plain Bars; A617M, Axle-Steel Deformed

and Plain Bars; A706M, Low-Alloy Steel Deformed Bars; A767M, Zinc Coated

(Galvanized)SteelBars;andA775M,Epoxy-CoatedReinforcingSteel.

b) Deformedreinforcingbarswithaspecifiedyieldstrength

f y exceeding410MPamay

beused,provided f y shallbethestresscorrespondingtoastrainof0.35percentand

thebarsotherwiseconformtoASTMstandardsnotedabove.Fabricateddeformedsteel

barmatsconformingtoASTMA184Manddeformedsteelwire complyingwithASTM

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A496maybeused.Deformedwireforconcretereinforcementshallnotbesmallerthan

sizeD4(Nominaldiameter:5.72mm),andforwirewithaspecifiedyieldstrength f y ,

exceeding410MPa f y shallbethestresscorrespondingtoastrainof0.35percent.

WeldeddeformedsteelwirefabricconformingtoASTMA497maybeused;forawire

with a specified yield strength

f y exceeding 410 MPa, f y shall be the stress

corresponding to a strain of 0.35 per cent. Welded intersections shall not be spaced

fartherapartthan400mmindirectionofcalculatedstress,exceptforwirefabricused

asstirrups.

7.3.25.2.3 Form 7.4.25.2.3.1 Form OilFormoilshallbelightcoloredparaffinoilorotheracceptablenon-stainingmaterial. Form incontactwithconcreteshallbegivenauniformlightspraycoatingofthespecifiedformoilcoatingin accordance with the manufacturer’s recommendations. Form coating shall be applied to theformsbeforetheyareset. 7.4.25.2.3.2 Form Ties Formtiesshallhavesufficientstrength,stiffnessandrigiditytosupportandmaintaintheforminproperpositionandalignmentwithouttheuseofauxiliaryspreaders.ThetypeofformtiesusedshallbesubmittedtotheEngineerforapproval. 7.4.26 Steel Reinforcement 7.4.26.1 Lapped Splices in Reinforcement Splices at points of great stress shall be avoided wherever possible, and care shall beexercisedtoavoidconcentrationofsplicesatoneplace.a) LengthofLap ThelengthsoflapsinlappedsplicesshallbeinaccordancewiththeDrawingsandindicated

below. 40d withouthook 35dwithhook Thelengthoflapinalappedspliceofreinforcingbarsofdifferentdiametersshallbebased

onthenominaldiameterofsmallerbar. 7.4.26.2 Anchorage of Reinforcement

Thelengthofanchorageofreinforcementshallbedeterminedinaccordancewiththetypeofreinforcingbar,thegradeofconcreteandtypeofstressactingonthereinforcement,andshallbeasindicatedinthetablebelow,unlessotherwiseindicated.

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LengthofAnchorageofReinforcement

Re-Bar StrengthofConcreteOrdinaryConcrete

LengthofAnchorageLower

BarBeam

Floor,Roof

SD30 210kg/mc2 35dor25dwithhook 25dor15dwith

hook 10dand15cmormore

Note :“d”denotesnominaldiameterofreinforcingbar.7.4.26.3 Dowels Dowelsshallbe installedatrightanglestoconstruction joints.Dowelsshallbeaccurately

aligned parallel to the finished surface and shall be rigidly held in place and supportedduringplacingoftheconcrete.

7.4.26.4 Concrete Protection for Reinforcement Thethicknessofconcretecoverforreinforcementshallbedeterminedtoprovidenecessary

fire resistance, durability and bearing strength of the member. Minimum concrete covershallbeprovidedinaccordancewiththetablebelow.

Table:MinimumThicknessofConcreteCoverforReinforcement

Item Structure Element Covering Thickness (cm) Floor,Wall Coveredfinish 2

Uncovered 3

Interiorfinish 3

Partnot Uncovered 3

Contacting Column,BeamwallGround

Exterior,coveredfinish

3

Uncovered 4

Bearingwall 4

Table:MinimumThicknessofConcreteCoverforReinforcement(Cont’d)

Item Structure Element Covering Thickness (cm)

Wall,Column,beam,floor 4

Partcontactingground Foundation,retainingwall 6

7.4.26.5 Concrete TestThetestofconcreteshallbeexecutedasfollows:a) Theconcretetests,necessarytomaintainthequalitycontrolofconcrete,shallbeexecuted

andtheirtestresultsshallbesubmittedtotheEngineer.b) Forconcretecompressivetests,six(6)testspecimensshallberequiredforeachconcrete

placement.

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c) Three (3) specimens shall be tested for seven (7) or fourteen (14) days strength, the

remainedthree(3)specimensshallbetesttestedfortwenty-eight(28)daysstrength.d) Thetestofconcreteshallbeexecutedonceforeach150m3orlessofconcretetobepoured

onthesameday.Theexpensefortheabovetestsshallbeincludedintheunitprices. 7.4.26.6 Tolerances for Concrete Construction Concretestructureshallbeconstructedtothelineshowninthedrawings.

Anystructurewhichdoesnotconformtosuchlineswithinthetoleranceslistedbelowshallberepaired,removedandmadeanewbythecontractor.

Toleranceslimitsofconcretestructureshall,asastandard,beinaccordancewiththetablebelow.

Tolerance Limited

Type Item Tolerances against base line (mm)

Column,wall A.Form Architecturallyformed

3

Others 5

B,Concretesurface 7

Beam,slab A.Form 1 B.Deflection 3 C.Concretesurface 7 A.Columnline 3

7.4.26.7 Steel Thrown Finish

After the placing of concrete has been completed, steel trowel finish shall be applied tointeriorconcrete floors,suchasbedofvinylasbestos tileandexposedsteel trowel finishfloorasindicatedinthedrawings.

The finished floor surfaces shall be true plane surfaces with no deviation in excess of3.0mmwhentestedwitha300mm.

Surfacesshallbepitchedtodrainswhereindicatedinthedrawings.

Instead of hand finishing, the contractors may use an approved power finishing machineprovidedthatthefinishedsurfacesarefreeofmachinemarksorridges.

7.4.26.8 Concrete Surfaces to Be ExposedFormsurfacesthatwillbeincontactshallbeofmaterialthatisnon-reactivewithconcreteandthatwillproduceconcretesurfacesequivalentinsmoothnessandappearancetothatproducedbynewplywoodpanels.Smallersizepanelsshallbeusedonlywhererequiredbyopeningsorjointdetails,witheacharealessthan120cmwideformedwithasinglepanelaccuratelycuttotherequireddimensions.

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Cut surfaces shall be smooth and treated with form coating. Panel joints that will be incontactwithconcreteshallbesmoothandfreeofoffset.

Formmaterialswithdefectsthatwillimpairthetextureandappearanceoffinishsurfacesshallnotbeused.

Columnformsshallbemadewithaminimumnumberofjoints.7.4.27 Masonry Work 7.4.27.1 Concrete Block Masonry 7.4.27.1.1 General

This clause covers walls, partitions and lintels constructed with pre-cast concrete hollowblocksreinforcedwithsteelbars.

7.4.27.1.2 Materials 1) Cementsandaggregate Cementandaggregatestobeusedintheconcretehollowblockshallbeasspecified

in the clause “REINFORCED CONCRETE WORK”. Coarse aggregate for blocks shall not belargerthanone-fifth(1/5)ofthenarrowestwithofhollowblocksection.

2) Cementmortarandconcrete Reinforcingbarsshallbeasspecifiedintheclause“REINFORCEDCONCRETEWORK”3) Cementmortarandconcrete Standardmixproportionshallbeasfollows,unlessotherwiseshown:

Work Mixproportion(byvolume)Cement:(slakedlime):sand

FormasonryJoint 1:3

Cementmortar ForTamping 1:3 Forpaintedjoint 1:3

Concrete ForTamping 1:(2.5):3.5

7.4.27.1.3 Working Drawings

Workingdrawingsoftheblocklayingplanincludingreinforcingforarrangementsandtheplacesofanchorboltsshallbesubmittedtotheengineerforapproval.7.4.27.1.4 Application Method

1) ReinforcingBars Unlessotherwisespecified,reinforcingbarsshallbeofD10,andshallbeplacedat

three(3)blockintervalshorizontallyandtwo(2)blockintervalsvertically. Intersectionofthebarsshallbesecurelytiedwithwire.Theextrareinforcingbars

tobeusedfortheperimetersoftheopeningshallbeofD13.

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2) Laying Theconcretesurfacetoreceiveblocksshallbecleanedandthoroughlywettedprior

to laying the masonry units. All masonry units shall be clean and free from surfacedustbeforelaying,andshallbelaidbysuingcementmortar.

Fractionalpartsofunitswillnotbepermittedwherewholeunitscanbeused.Jointsshallbe10mmthick,andasuniformaspossible.

Allexposed jointsshallberaked10mmdeepandtooled firmlysoastoproduceasmooth, tight surface. All cell where reinforcing bars are inserted and blocks are jointedshallbecompactlyfilledwithspecifiedmortar(tampingmortar).

Layingofblocksshallnotexceed1.2metersperdayinheight. Pipesandconduitstobeinsertedintheconcretehollowblockwallsshallbeembeddedin

such a manner as not to cause any damage to the block. The contractor shall coordinateplacing of all items embedded in masonry, and shall be responsible for any changes inpositions.

7.4.28 Lintel Lintels for opening shall be of reinforced concrete and extended to a length of at least20mmintotheadjoiningwalls. Allcellsoftheblocksdirectlybelowtheextendedlintelsshallbefilledwithmortar.7.4.29 Bond Beam Whentheheightofconcreteblockwallexceeds30timesthewallthickness,reinforcedpre-castorpour inplaceconcretebondbeamshallbeprovidedateach30 timesexceedingthewallthickness.7.4.30 Precast Concrete Block 7.4.30.1 General

Materials,suchascement,aggregate,reinforcingbars,etc.shallbeasspecifiedintheClause“REINFORCEDCONCRETEWORK”

Maximum size of coarse aggregate shall be less than 5mm. Specific gravity of coarseaggregateshallbe2.7ormore,unlessotherwisespecified.

Mixproportionofcement,sand:coarseaggregateshallbe1:2:4,respectively. 7.4.30.2 Lightweight Concrete Block for RoofingSpecificgravityofcoarseaggregateforlightweightconcreteshallbe1.7.-1.9.7.4.31 Water Proofing Work 7.4.31.1 GeneralThisclausecoversallwaterproofing,builtuproofingandmortarwaterproof.

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7.4.31.1.1 Built Up Roofing 7.4.31.1.2 Materials (1) AsphaltPrimer Asphaltprimershallbeappliedbysprayingorbrushing.Thequalityofmaterialshallbein

accordancewiththetablebelow:

DryingTime Notlessthan8hours

Remainderafterdrying Notlessthan35%

SpecificGravity Lessthan1.0

TestmethodfortheaboveshallcomplywithJISK5400orequivalentBDS(2) AsphaltCompoundThequalityofmaterialsshallconformtoASTM,andshallinaccordancewiththetablebelow.

AsphaltCompound

Penetration(25oC,100gr,5sec.) 20–30(2.0~3.0mm) SofteningPointoC Notlessthan90oC Carbondisulfide Notlessthan97% Matteability(25oC) Notlessthan2.5mm VolumeofEvaporation Lessthan0.5% Penetrationafterevaporation Notlessthat70%

FlashingPoint(opencupmethod) Notlessthan230oC SpecificGravity 1.01-1.04

(3) AsphaltRoofing

AsphaltroofingshallcomplywithJISA6006(AsphaltRoofingFelts),orequivalentBDSandshallbe45kg.–item(21.0mx1.0mperroll) TheContractorshallsubmitsampleofasphaltroofingtotheengineeringforapproval.(i) Specificroofingshall,inprinciple,consistofcoppermesh(#38)orglass-fiber(#23)

coatedwithasphalt,andtheweightofstandarditemshallbe55kg.(ii) PerforatedRoofing QualityofmaterialshallcomplywithJISA6006orequivalentBDS TheContractorshallsubmitthesampletotheengineerforapproval.

7.4.31.1.3 Grades of Water Proofing

Working Process Class – A Class - B 1 AsphaltPrimer(0.31/m2) AsphaltPrimer(0.31/m2)

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2 Perforatedroofingwithinlayerofsand

Asphalt(0.1kg/m2)

3 Asphalt(1.2kg/m2) AsphaltRoofing 4 Specialroofing Asphalt(1.0kg/m2) 5 Asphalt(1.0kg/m2) Specialroofing 6 Specialroofing Asphalt(1.0kg/m2) 7 Asphalt(1.0kg/m2) Asphaltroofing 8 Asphaltroofing

9 Asphalt(2.0kg/m2)

Class–Ashallbeappliedfortheroof. Class–Bshallbeappliedforthelavatory. Inclinationofthebaseconcreteshallbe,inprinciple,morethan1/100. 7.4.31.1.4 Application Method

Asphalt primer shall be evenly sprayed over the base concrete or roof insulation board.Asphalt compound shall then be vinyl poured and spread over the asphalt primer.Compoundheatedtoatemperatureexceeding230oCshallnotbeused.

Inthecaseofclass–A,perforatedroofingshallbelaidbetweenasphaltprimerandasphaltcompound.

Asphalt felt, roofing and special roofing shall be flatly laid over each respective asphaltcompound.Thesidesandendsofthesesheetsshallbeprovidedwithanoverlapofatleast9centimeters.Thejointsshallbecompletelywatertightandnotbeconcentrated.

Careshallbeexercisedfortheroofingworkssurroundinganchorbolts,parapetsandroofdrainstopreventanyleakage.

7.4.32 Mortar Waterproofing Thewaterproofingagentshallbeusedformortarwaterproofingofroofandbalcony.

Cement and sand to be used for waterproofing mortar shall be as specified in the clause“PLASTERWORK”

ThecatalogueandmixproportionshallbesubmittedtotheEngineerforapproval. Theapplicationmethodofmortarshallbeasspecifiedintheclause“PLASTERWORK”7.4.32.1 Caulking 7.4.32.2 General

TheContractorshallfurnishallmaterials, laborandequipmentnecessarytocompletetheworkasspecifiedorasdirectedbytheengineer.

The contractor shall submit the catalogues and work procedures to the engineer forapproval.

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7.4.32.3 Material

(1) Oil caulking compound shall conform to JIS A 5751 (Oil Based Caulking compoundsBuildings)orequivalent.

(2) ThiokolcaulkingshallconformtoJISA5754(PolysulfideSealingcompoundforBuildings)

orequivalent.(3) Thiokolcaulkingshallbeusedasjointforallsurroundingsofexteriordoors,windowsand

concretepanels. 7.4.32.4 Workmanship

All joint surfaces to be filled shall be sound, clean and dry. All concrete surfaces shall befullycuredbeforeapplicationofcaulking.

Joint surfaces to be filled shall be primed with the manufacturer’s recommended primer,compatiblewiththeThiokolbasesealingcompoundandappropriateforthesurfacestobesealed.

Mixingandapplicationoffillingcompoundshallbeinaccordancewiththemanufacturer’srecommendations,andshallbesubmittedtotheengineerforapproval.

Allfillerworkshallbedonebyskilledworkmen.7.4.33 Control Joint For Roof

Controljointshallbeprovidedbetweenmortarfinishandlightweightconcreteblockandatabout4.0mmofintervalsinlightweightconcreteblockareaofroof.

Controljointshallconsistsofelastightandasphaltmortar. 7.4.34 Tile Work 7.4.34.1 GeneralThisclausecoversallworksrequiredformosaictile,ceramictileandothersappliedonfloorsandwall. Workingdrawingsshallbesubmittedtotheengineerforapproval. Prior to starting work, the contractor shall submit samples of tile to the Engineer forapprovals.7.4.34.2 Materials 7.4.34.2.1 Floor Finish ● To be used 900mmx900mm (36 inch x 36inch) size European standard Mirror Polished Homogeneoustilesfor1stto6thFloor.

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●ForGround/UndergroundFloorfinishtobeusedasperTransformerbased designsuchasusedrygravelsforbottomoftheTransformerandRusticTilesforwalkwayorcommonspace.

Materialstobeusedintheworksshallbehighquality,highgradeandgoodappearance.

7.4.34.2.2 Ceramic Tile for Interior Wall Finish (GWI) for Bath room’s wall SpecialcolorandsizeofEuropeanstandardCeramicTilewithdecorativeBoardershallbeusedinBathrooms&othernecessaryinteriorwalls.Materialstobeusedintheworkshallbehighquality,highgradeandgoodappearance.7.4.34.2.3 Ceramic Tile for Exterior Wall Finish

Ceramic tile for exterior wall finish shall be of 60mm x 227mm, colored, glazed andmanufacturedbyqualifiedmanufacturerasapprovedbytheengineer.(ifrequired)

Thecoloroftileshallbedesignatedbytheengineer.7.4.34.2.4 Setting Materials

(1)Cement, sand to be used for mortarbed shallbe asspecified in the clause “REINFORCEDCONCRETEWORK”

(2)BeddingmortarshallbemixedwithonepartPortlandCementandthreepartssand.

7.4.34.3 Setting(1) MosaicTile Themortarsettingbedshallbefloatedtoauniformplumbandlevelsurfacetobringthe

finishsurfacetotherequiredplane. Thicknessofmortarshallbeabout10millimeters. Mosaic sheets shall be placed in positions on the pure coat and freshly combed into the

mortarsettingbedwithtrowel.Sheetsshallbetampedfirmlyintoplaceandmadetrueandevenwiththefinishedsurfacelineorplane.

Expansionjointsorcontroljointsat6metersoncentershallcontinuethroughthemortar

bedandmosaictileandshallbekeptfreefrommortarandgrout.Thoseshallbefilledwithanapprovedcaulkingcompoundandshallbeascloseaspossibletothecolorofthegroutmortar.Alljoints,afterremovalofthepaper,shallbegroutedleavingthencompletelyanduniformlyfilled.Atnotimeshallsandoranyabrasivebeusedthatwilldamagethenaturalsheenofthemosaictile.Allexcessgroutandglueshallberemovedfromthefaceofthetileleavingthefinishedsurfaceclean.

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(2) CeramicTile Layingofceramictileshallcomplywiththespecificationsfor“MosaicTile”forfloors,tile

layoutworkshallbeginfromthecenterlinesofareastoeliminateuseofhalftiles. Forwalls,tilelayoutworkshallbeginfromthetopofthewallandproceeddownward. Tile shall be soaked in clean water for at least one hour prior to setting and applied to

settingbedswithinfiveminutesaftersoaking.(3) Protection Thecontractorshallprovideandinstallbarriersorotherformsofprotectionandcovering

topreventdamages.(4) Cleaning Tilesshallbethoroughlycleanedaftergroutingandpaintinghassufficientlyset.A;;traces

ofcementorforeignmattershallberemovedfromtiles.Exposedhardwareandplumbingtrimshallbecoveredwithbaselineduringtilesetting.Baselineshallberemovedandmetalshallbecleanedandpolished.

7.4.34.4 Gun Sprayed Tile Gunsprayedtileshallbeappliedonthesurfaceofconcreteasindicatedinthedrawings. GunsprayedtileshallconformtoJISA6910-Corequivalent. Sealer shall be applied on the concrete surface so as to prevent moisture from mainmaterialandtoincreaseadhesionofmainmaterial. MainmaterialshallconsistofwhitePortlandCement,dolomiteplasterandcoloringagent.ThecolorshallbedesignatedbytheEngineer. 7.4.35 Metal Works 7.4.35.1 GeneralThis clause covers all metal works for flooring, siding, walling, flushing, railings, roofing, raiser,plumbing, and other pertinent fixtures. The contractor shall submit fabrication and installationdrawingstotheengineerforapproval.

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7.4.35.2 Handrails 7.4.35.2.1 Steel Railings For Stair caserailing to be usedStainlessSteelPipe,SquareBox& other decorative post asperdrawingtotheengineerforapproval.Steelrailings, includingpipeinsertstobeembeddedinconcreteshallconformtoJISG3452andshallbegalvanized,unlessotherwisespecified.SquarepipeshallbeofthesizeindicatedintheDrawings.Galvanizingcoatdamagedbybolting,weldingandotherfieldworksshallberepairedandpaintedwithtwocoatsofsilverzincpaint.7.4.35.2.2 Fabrication

Miteredandweldedjointsshallbemadebyfittingposttotoprailandintermediaterailtopostmiteringcomers,grooveweldingjoints,andgrindingsmooth.Railings may be bent at comers instead of jointed, provided that the bends are made insuitablejigsandthatthepipeisnotcrushedordamage.

Edgeoftherailingsshallbecoveredwithsteelplates.7.4.35.2.3 Installation

Railsshallbeinstalledbymeansofsteelsleeveinsertswhichshallbeseatandanchoredintheconcrete.

Portsshallbe insertedintothegalvanizedsteelsleevesembeddedinconcreteorshallbeweldedtothestringer,beamortoeplatemadelevel,perpendicularandaligned.

The space between pipe posts and pips sleeve inserts except those marked “ Removablehandrail” as indicated in the drawings shall be filled solid with molten lead or shall bewelded.

7.4.35.3 Steel Ladders MaterialstobeusedforsteelladdersshallconformtoJISG3101–SS41orequivalent.

Steelladdersshallbefabricatedofl-65x6steelanglestringersand19mmdiametersteelbarrungs.Rungsshallbespaced350mmapartandshallbeinsertedintothestringersandweldedthereto.

Theladders,includingweldedonbracket,shallbepointed.

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7.4.35.4 Corner Guards

Comerguardsforjamps,wheredirectedbytheengineerandsillsofopeningandedgesofconcretecolumnandwallshallbeofsteelanglesorsteelplates,conformingtoJISG3101-SS 41 or equivalent, anchored into concrete with welded steel straps or end weld studanchors.

7.4.35.5 Stair Safety Nosing for Concrete StairStairsafetynosingshallbeofextrudedbronzeorstainlesssteelwithcrosshatchednosing.Safetynosingshallbeprovidedwithintegrallycastorbentanchorsforembeddingintoconcrete. 7.4.35.6 Divider Strips

Divider strips shall be half hard brass and shall be placed between different types offloorings as indicated.Dividerstrips shall be secured to floorsby stripanchors orby flatheadcountersunkbrassscrewssetinleadplugs.

7.4.35.7 Roof Drain

RoofdrainsshallbeofcastironbakedwithrefinedtarandshallconformtoJISA5511,orequivalent,Thesizeshallbeinaccordancewiththedrawings.

7.4.35.8 Corner Bead

Corner bead shall be half hard brass, and shall be placed at edges of columns and wallwheremortarorplasterisapplied.

7.4.35.9 Blind Box

Blindboxesshallbeprovidedaboveallwindowsfacedtooutdoor,exceptingfor lavatory,storage,janitorial,kitchenandroomswhichlocatedonthefirstfloor.

Theyshallbeconstructedof1.6mmthicksteelplateconformingtoJISG3131,JISG3141orequivalentandshallbepainted.

Hangerbracketforinstallationoftheblindboxshallbegalvanized6mmthicknessflatbarconforming to JIS G 3101 SS 41 and shall be installed at spacing of 90cm diameterexpansionblots.

Connectionbetweenblindboxandhangerbracketshallbe6mmdiameterboltsandnuts. 7.4.35.10 Door sillPriortocommencementoffloorfinishwork,doorsillshallbeprovidedinplacebetweendifferenttypesofflooring,unlessotherwiseindicated,andshallbestainlesssteelconformingtoJISG4305–SUS304orequivalent.7.4.35.11 Flashing Plate

FlashingPlatesshallbeof2.3mmgalvanizedsteelplateconformingtoJISG3131,G2341orequivalent.

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Flashing plates shall be provided at wall and roof opening for piping and at surroundingareasofwindows,louversrollingdoorsanddoorsfacingoutdoors.7.4.35.1 2 Embedded Plate, Hook and Sleeve The contractor shall provide plates, hooks and sleeves to be embedded in concrete asrequired.

Embedded plates, hooks and sleeves shall have sufficient thickness, diameter andanchorage in order to fix equipment, piping and other necessary items. Painting shall beappliedontheplatesandhooksafterfixingtheequipmentandpiping.

Thematerialstobeusedforplates,hooksandsleevesshallconformtoJISG3101SS41orequivalent.

7.4.35.13 Joiner

Joiners shall be provided at surrounding space of suspended ceilings and shall be ofaluminumconformingtoJISH4000orequivalent.

Smallscrewsshallbeofstainlesssteelorofhighstrengthaluminumalloy.7.4.35.14 Down Spout Downspouts to be used for drains shall be steel pipe conforming to JIS G 3442 orequivalent. Metal bracket shall be of50mm x4.5mm steel plate conforming to JIS G 3101 SS 41 orequivalentandgalvanized. Downspoutsshallbefixedwithmetalbracketsatmaximumof2.0mperspace.7.4.36 Plaster Work 7.4.36.1 General 7.4.36.1.1 Treatment of Bed(1) Concrete surfaces which are too smooth to receive plastering shall be roughened before

handwithchisels.(2) Wherewallandfloorsofconcrete,concreteblock,etc.aredistortedoruneven,thebedshall

berepairedwithmortar. 7.4.36.1.2 Cleaning and Wetting of Bed The bed, scratch coat, and treated surface of bed shall be cleaned and suitably wettedbeforeapplicationofthefollowingcoat. Portionsofthebaseorcoatedsurfacewhicharenotbondedshallbeimmediatelyrepaired.

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7.4.36.1.3 Curing In order to prevent soiling and premature drying of plastered surface, window and doorworkshallbecompletedpriortocommencementoftheplasterworksheetcoveringsprovidedandsprinklingofwaterperformed. Inordertopreventthesoilingofneighboringmembersandotherfinishedsurface,suitableprotectionshallbeprovidedusingpaper,boarding,tarpaulingsheetorothersuitablemeans.7.4.37 Mortar Plastering 7.4.37.1 Materials(1) Cement shall conform to JIS R 5210 ordinary Portland Cement or locally produced

equivalent.(2) Sand shall be of good quality free of salts, mud, trash and /or organic matters. The

gradationshallbeinaccordancewiththetablebelow.

Table Gradation of Sand Gradation(byweight) Type of MortarPlastering Passing5mmsieve…………..100% Firstcoatadsecondcoat Passing0.15mmsieve………notmorethan10% Passing2.5mmsieve…………100% Finishcoat Passing0.15mmsieve………..notmorethan10% Watershallbecleanandfreeofsales,iron,sulfurand/ororganicmatter,asspecifiedinheclause“CONCRETEWORK”.7.4.37.2 Mixing Themixproportionsofmortarshallbeofstandardtypeinaccordancewiththetablebelow.

Table Mix Proportion (by Volume)

Base Portion to be Plastered First Coat

Second Coat

Finish Coat

C:S C:S C:S SlakedLime

Floor 1:2

InteriorWall 1:2 1:3 1:3:0.3

Concrete Ceiling 1:2 1:3:0.3

ConcreteBlock ExteriorWallandothers 1:2 1:3 1:3

Wirelath InteriorWall 1:3 1:3 1:3:0.3

MetalLath Ceiling 1:2 1:3 1:3:0.3

Exteriorwallandothers 1:3 1:3 1:3

Intheabovetable,abbreviatedCandSmeancementandsand,respectively.7.4.37.3 Plastering Thickness

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Thethicknessofapplicationshallbeinaccordancewiththestandardsindicatedinthetablebelow.

Table Plastering Thickness

PlasteringThickness(mm)

Bed Portiontobeplastered

Firstcoat DubbingCoat

SecondCoat

FinishCoat Total

Floor - - - 30 30

Concrete Interiorwall 6 5 6 3 20 ConcreteBlock Exteriorwall 6 7 6 6 25

Ceiling,others 4.5 - 4.5 3 12 Interiorwall 7.4 - 7.4 3 18

WireLath Exteriorwall 6 - 7.4 3 18 MetalLath Ceiling,waves 4.5 - 4.5 3 12

7.4.37.4 Application Method (1) First Coat and Dubbing Out Mortarshallbetrawledonadequatelytoleaveonconspicuoushollow.Thesurfaceofthefirstcoatshallberoughenedwithtoolssuchasmetalcombs. Thefirstcoatshallbe leftstandingfornot lessthen10daysallowingcrackstobefullydevelopedbeforeapplyingthenextcoat. Dubbingoutforconcreteandconcreteblockshallbeperformedbyrougheningwithtoolssuchasmetalcombsandshallbeleftstandingfornotlessthen5days. (2) Second Coat Forthesecondcoat,arulershallbeprovidedatexternalcorners, internalcornersandedgesappliedonordertoattainanevenfinish. (3) Finish Coat Thefinishcoatshallbeappliedinamannersoastobeblemishfreebywatchingthedegreeofdryingofthebrowncoatandbypayingspecialattentiontothesurface,anglesandedges. The finish shall be either steel toweled, wood troweled or brushed as directed bytheengineer. Fortheexteriorwall,themortarshallfirstbetroweledonwithawoodtravel,thenfurnishedwithasteeltrowelandfinallybrushedavoidinguseofwaterasmuchaspossible. (4) Floor Mortaring Inthecaseofconcretewhichisseveraldaysold,concretepasteshallbebutteredoninadequatequantityandspreadoutwithbroomsandthe likeafterwhichapplicationofmortarshallbestarted.

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Applicationofmortarshallbeperformedusingstiffmortarcontainingaminimumof water and the mortar shall be tamped to bring moisture to the surface. The mortar shall bescreenedwhilepayingattentiontothegradeuponandthenshallbetroweledsmooth. Thecrackcontroljointshouldbeprovidedatintervalsofapproximately3.0m.Thejointsshallbetooled. (5) Base for Tile Fixing Inthecaseofusingadhesivesofwalltileormosaictile,mortarapplicationshallbetothesecondcoat.7.4.38 Plastering 7.4.38.1 Materials PlastershallcomplywithJISA6904(GypsumPlaster)orequivalent.Cementwhichismorethansix(6)monthsagedshallnotbeused.7.4.38.2 Mix Proportion Themixproportionsshallbeasfollows:

Plaster Applied

Thickness

Bed Layer For

Finish ForBed

Sand WhiteFiber

(g)/25kg Ceiling Wall

Concreteand

concreteblock

2ndcoat - 1 2.0 250 6.0 7.4

Finishcoat 1 - - - 1.5 1.5 7.4.38.3 Application Method Thesurfacetoreceivegypsumplasteringshallbeleveledwithacoatofcementmortarofwhich the mix proportion of cement and sand is 1:2 prior to the application of plaster and theleveledsurfaceshallbescratchedtoinsuresatisfactoryadhesionoftheplaster. Before applying plaster, the receiving surface shall be pre pared by removing all foreignsubstancesandshallbedampened.7.4.39 Doors, Windows and Louvers 7.4.39.1 Wooden Doors and Frames 7.4.39.1.1 General Thisclause covers wooden doorsand wooden frames, including finishhardware, such asbutts,hinges,locks,knobs,stops,strikes,holders,doorchainsandclosures.

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7.4.39.1.2 Materials All doors shall be flush type, of sizes as shown in the drawings. Materials shall be, inprinciple,locallyprinciple,locallyproduced.Standardflushdoorsbedoublepaneleddoorof6mmthickplywoodandshallhavestiffeningribsspacedatintervalsof15cm.PlywoodshallbebendedtotheframeswithasuitableadhesiveswhichshallconformJISK6801and6803orequivalent. Waterproofedplywoodshallbeusedforwoodendoorsforthelavatory. Thewaterproofedplywoodshallbeof6mmthicknessfive(5)playandtheweightshallbe4.79kg/m2. Theeachlayershallbecompletelypressedandadheredbyusingphoneticresinadhesivesandtheplywoodshallbepassedaboilingtestandadryandwetrepeatingtest. All wooden doors and frames shall be painted as specified in clause “PAINTING” unlessotherwisespecified.7.4.39.1.3 Shop Drawings Thecontractorshallsubmitstopdrawingsoffabricateditemstotheengineerforapproval.The shop drawings shall clearly show the details of fabrication, installation, sizes, operation,methodsofanchoringandanyotherpertinentdetailsrequiredfortheinstallationthereof.7.4.39.1.4 Wooden Door FramesAllframesshallbeaccuratelyset,plumb,levelandshallbesecurelynailedtothewoodenblocksembeddedintheconcreteormortar.DoorFrameandShuttershouldbemadebysolidwoodsuchasBurmaTeakasperdirection/decisionoftheemployer

7.4.39.1.5 Installation Each door shall be accurately cut, trimmed and fitted to its frame and hardware withallowanceforpaintfinishandpossibleswellingorshrinkage.Theclearanceatthetopshallnotexceed6mm.7.4.39.1.6 Hardware for Wooden Doors Hardware for wooden doors shall in principle be stainless steel conforming to The

applicablestandardsarelistedbelow:

BDS 113:1986 SpecificationforLatchesandLocksforDoorsinBuildings;

IS 204-78 SpecificationforTowerBolts;

PartIFerrousMetals(FourthRevision);

PartIINonferrousmetals(FourthRevision);

IS205-1978 Specification for Nonferrous Metal Butt Hinges (Third

Revision);

IS206-1981 SpecificationforTeeandStrapHinges(ThirdRevision);

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IS208-1979 SpecificationforDoorHandles(ThirdRevision);

IS281-1973 Specification for Mild Steel Sliding Door Bolts for Use with

Padlock(SecondRevision);

IS362-1982 SpecificationforParliamentHinges(FourthRevision);

IS363-1976 SpecificationforHaspsandStaples(ThirdRevision);

IS 364-1970 SpecificationforFanlightCatch(SecondRevision);

IS 452-1973 SpecificationforDoorSprings,Rat-tailType(SecondRevision);

IS453-1973 Specification for Double Acting Spring Hinges (Second

Revision);

IS 729-1979 SpecificationforDrawerLocks,CupboardLocksandBoxLocks

(ThirdRevision);

IS 1019-1974 SpecificationforRimLatches(SecondRevision);

IS 1341-1981 SpecificationforSteelButtHinges(FourthRevision);

IS1823-1980 SpecificationforFloorDoorStoppers(ThirdRevision);

IS1837-1966 SpecificationforFanlightPivots(FirstRevision);

IS2209-1976 SpecificationforMorticeLocks(verticaltype)(ThirdRevision);

IS2681-1979 Specification for Nonferrous Metal Sliding Door Bolts for Use

withPadlocks(SecondRevision);

IS3564-1975 SpecificationforDoorClosers(hydraulicallyregulated)(Second

Revision);

IS3818-1971 SpecificationforContinuous(piano)Hinges(FirstRevision);

IS3828-1966 SpecificationforVentilatorChains;

IS3843-1966 SpecificationforSteelBackflapHinges;

IS3847-1966 SpecificationforMorticeNightLatches;

IS4621-1975 Specification for Indicating Bolts for use in Public Baths and

Lavatories(FirstRevision);

IS 4948-1974 SpecificationforWeldedSteelWireFabricforGeneralUse(First

Revision);

IS 4992-1975 SpecificationforDoorHandlesforMorticeLocks(verticaltype)

(FirstRevision);

IS5187-1972 SpecificationforFlushBolts(FirstRevision);

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IS5899-1970 SpecificationforBathroomLatches;

IS5930-1970 SpecificationforMorticeLatch(verticaltype);

IS6315-1971 Specification for Floor Springs (hydraulically regulated) for

HeavyDoors;

IS6318-1971 SpecificationforPlasticWindowStaysandFasteners;

IS6343-1982 Specification for Door Closers (pneumatically regulated) for

LightDoorsWeighingupto40kg(FirstRevision);

IS6602-1972 SpecificationforVentilatorPoles;

IS6607-1972 SpecificationforRebatedMorticeLocks(verticaltype);

IS7196-1974 SpecificationforHoldFast;

IS7197-1974 Specification for Double Action Floor Springs (without oil

check)forHeavyDoors;

IS 7534-1974 Specification for Mild Steel Locking Bolts with Holes for

Padlocks;

IS 7540-1974 SpecificationforMorticeDeadLocks;

IS 8756-1978 SpecificationforBallCatchesforuseinWoodenAlmirah;

IS 8760-1978 Specification for Mortice Sliding Door Locks, with Lever

Mechanism;

IS 9106-1979 SpecificationforRisingButtHinges;

IS 9131-1979 SpecificationforRimLocks;

IS 9460-1980 SpecificationFlushDropHandleforDrawer;

IS 9899-1981 SpecificationforHat,CoatandWardrobeHooks;

IS 10019-1981 SpecificationforSteelWindowStaysandFasteners;

IS 10090-1982 SpecificationforNumericals;

IS 10342-1982 SpecificationforCurtainRailSystem

orequivalent.

7.4.40 Steel Fittings 7.4.40.1 General This clause covers steel fittings, including finish hardware, such as butts, hinges, locks,knobs,stops,strikes,holders,doorchainsandclosures.

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7.4.40.2 Materials SteelsheetshallconformtoJISG3131,G3141orequivalent. Thethicknessofsteelplatesshallbeasdesignatedbelow,unlessotherwisespecified. DoorFrame 1.6mm Architrave 1.2mm Threshold 2.3mm DoorLeaf Frameandflushplate 1.6mm Stiffenerandanchorplate 2.3mm

Machinescrewsandrivetsshallconformto JISB1101-1106, JIS B1201-1205andJIS B1131-1133orequivalent.

7.4.40.3 Steel Doors Steeldoorsshallbesingleordoublehollowcore,singleordoubleswigtypeorslidingtypeand with dimension and location as indicated in the drawings. All doors shall be complete withdoorframes,hardwaresandany/allnecessaryaccessories. Shop fabricated frames without threshold shall be provided with temporary spreads atbottomtopreservepropershapeduringtransportationanderection. Allmetalsurfacesshallbethoroughlycleanedandgiventwocostsorrustinhibitivepaintafterbeingzincplatedinshop. Fieldpaintforfinishshallbeprovidedasspecifiedintheclause“PAINTING”7.4.40.4 Steel Louver Steellouversshallbeof45oslitsand100mmthicklouversandframeassembly. Thesizesshallbeindicatedinthedrawings.7.4.40.5 Shop Drawings TheContractorshallsubmitshopdrawingsoffabricateditemstotheengineerforapproval.The shop drawings shall clearly show the details of fabrication, installations, dimensions, sizes,operation, methods of anchoring and any other pertinent details required for satisfactoryinstallation.7.4.40.6 Installation Allframesshallbeerectedplumb,squareandtruetolineandlevel,withsecurefatteningtostructuresandanchors. Doorframes shall be installed by authorized representatives of the manufacturer, butbeforeallplasteringworksarecompleted.

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7.4.41 Aluminum Fitting 7.4.41.1 General

This clause covers all types of aluminum door, window, casements, and swing, sliding,pivoted,projected,firedandcombinationdoorsandwindows,includingoperationhardware.7.4.41.2 MaterialsExtruded aluminum shape and sheet shall conform to JIS H 4100 and H 4000 respectively orequivalent. Reinforcingstrips,reinforcingstrutsanchors,etc.shallbeofzincplatedsteelplateconformG310-SS41. SmallscrewsshallbeofstainlesssteelconformingtoJISG5121SUS304orofhighstrengthaluminumalloyconformingtoJISH4040orequivalent.7.4.41.3 Shop Drawings TheContractorshallsubmitshopdrawingsoffabricateditemstotheengineerforapproval. The shop drawings shall clearly show the details of fabrication, installation, dimensions,sizes, operation, methods of anchoring and any other pertinent details required for satisfactoryinstallation.7.4.41.4 Installation All aluminum windows shall be installed by the manufacturer or his authorizedrepresentativeandshallbesetplumb,square,levelandtruetoline. Framesshallbesetandsecurelyanchoredtothestructure. Aluminumsurfaceincontactorothermasonrymaterialsshallbeprovidedoneheavybrushcoatofbituminouspaint.Uponcompletionoftheworkthecontractorshallremoveandcleanallsurplusmaterialsfromtheseareas.

7.4.42 Glass And Glazing

7.4.42.1 General

The contractor shall furnish and install all glass required in doors and windows inaccordancewiththedrawingsandanydirectionoftheengineer.Theapplicablestandardsforglassandglazingarelistedbelow:

ASTM C1036-90 SpecificationforFlatGlass;

ASTM C1044-90 Specification of Heat-Treated Flast Glass Kind HS, Kind FT

CoatedandUncoatedGlass;

ANSI Z97.1 Safety Performance Specifications and Methods of Tests for

TransportSafetyGlazingMaterialsUsedinBuilding;

CPSC 16CFR SafetyStandardforArchitecturalGlazingMaterials.

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7.4.42.2 Materials

(1) OrdinarysheetglassshallconformtoJISR3201(SheetGlass)orequivalent.(2) PolishedplateglassshallconformtoJISR3202(PolishedplateGlass)orequivalent.(3) FiguredglassshallconformtoJISR3203(FiguredGlass)orequivalent.(4) WiredglassshallmeetconformtoJISR3204(WiredGlass)orequivalent.(5) LaminatedglassshallconformtoJISR3205(LaminatedGlass)orequivalent.(6) TemperedglassshallconformtoJISR3026(TemperedGlass)orequivalent.(7) MultipleglassshallconformtoJISR3209(MultipleGlass)orequivalent.(8) Putty shall conform to JIS A 5752 (Putty for Metal Sash Glazing) and JIS A 5753 (Putty for

woodenFittings). Puttyforsteelfittings,thequalityshallbeclass1,foraluminumfittings,class2asspecified

inJISA5752.(9) Thethicknessofsheetglassandpolishedplateglassshallbe3.0mmforfiguredglass4.0mm

andforwiredglass6.8mmunlessotherwisespecifiedinthedrawings. 7.4.42.3 Workmanship Noglazingworkshallbecarriedoutduringrainorwhentheframesorglassiswet. Framesshallbethoroughlycleanedbeforeapplicationofglazingcompound. All glass in windows and doors, except wooden doors, shall be set in full beds of glazingcompoundandpressedtoafirmandevenbearingwithoutspringingorforcing.Glassinwindowsshall be held firmly in place withsnap type glazing beads and in doorswithglazing channels orbeads. Upon completion of construction work, all dirt, stains and mis-applied glazing compoundshallberemoved,andallglassshallbethoroughlycleanedonbothfaces. 7.4.43 Painting Work 7.4.43.1 General Painting work shall be specified in clause “PAINTING WORK” in SECTION 1 “GENERALPROVISIONS”,unlessotherwisespecified.

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7.4.44 Interior Finish Work7.4.44.1 General Thisclausecoverstheperformanceofallworksinconnectionwiththefollowing. 1) Vinylasbestostile 2) Acidproofvinyltile 3) Vinylbase 4) Asbestoscementboard 5) Acousticboard 6) Suspendedceiling 7) CeilingAccess 8) Insulation 9) Nameplateforrooms 10) Accordionpartition 11) ToiletPartition

Prior to starting work, samples of interior finish materials and shop drawings shall besubmittedtotheengineerforapproval.

Typesandsizesofnails,screws,boltsandqualityofadhesivesforfixingof interiorfinishshallcorrespondandmatchtocharacteristicsof the interior finishmaterialsandshallbesubmittedtotheengineerforapproval.

7.4.44.2 Fixing Fixingshallnotcommenceuntilafterdryingandcleaningofthebase. Fixing method of specified materials shall be in accordance with the manufacturer’sspecificationandshallbesubmittedtotheengineerforapproval. In performing fixing, adequate precautions shall be provided to avoid off set, gap and/orunevenness. Suitable protection measures shall be provided on the interior finish until all finishingworksarecompleted.7.4.44.3 Vinyl Asbestos Tile For Floor Finish

Sizesofvinylasbestostileshallbe300mmx300mmx3mmthickconformingtoJISA5705orequivalent.

-Thetilesshallberesistanttoalkali,greaseoroils. -Thevinyltilesshallbebondedwithasphaltadhesives.7.4.44.4 Acid-Proof Vinyl Tile

Thetilesshallbeofacidprooftypevinyltile.Theshapeanddimensionsshallbethesameasthoseofvinylasbestostile.

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7.4.44.5 Vinyl Base Vinyl baseshall conform to the manufacturer’s recommendation ofvinyl asbestos tile forflooringunlessotherwiseindicated,theheightofthebaseshallbe100mm. 7.4.44.6 Asbestos Cement Board Materials shall conform to “ Flexible Board” in JIS A 5403 (Asbestos Cement Sheets) orequivalent. Whennecessary,chamferingshallbecarriedoutsoastofacilitatethemakingofjointsandpreventtheirirregularity. Hardwarefixingsshallbecountersunkscrewsofstainlesssteel.7.4.44.7 Acoustic Board For Ceiling(1) Thematerialshallbeof incombustiblerockwoolandperforated .Thethicknessofboard

shallbe12mm. Acousticboardsshallbefixedonthebaseboardwithsuitableadhesivesornailsso

astofacilitatethemakingofjointsandpreventtheirirregularity.(2) BaseBoardforCeiling BaseBoardshallbeplasterboardsconformingtoJISA6901(GypsumBoard)Grade

2orequivalent. Thethicknessofboardshallbe9mm.7.4.44.8 Suspended Ceiling TheContractorshallprovidealightweightsuspensionsystem. Thesystemshallhavethemeanstoproperlysupporttheentireceilingwhenitisinplace.7.4.44.8.1 Main Runner

Mainrunnersforallsuspensionsystem,unlessotherwisespecified,shallbeofcoldrolledzincbondedlightchannelsteel(-38mmx15mmx1.6mm)conformingtoJISG3350.

Thechannelrunnershallbeinstalled90cmoncentersandsuspendedbysteelbarsof6mmdia.Hangerswithleveladjustablenutsat90cmintervals.

Thegridshallbeleveledtowithin1/500.7.4.44.8.2 Cross Furring Crossfurringforceilingshallbeofcoldrolledzincbondedsteel(M-23-mmx23mm).

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TheM-furringshallbeinstalled30cmoncentersandatrightanglestothemainrunnerbywire clips. All M-furring shall be straight in alignment and hold so as to enable levelplacementofplasterboardonthesuspensionsystem.

7.4.44.8.3 Workmanship

The installation and workmanship shall be in strict accordance with the manufacturer’sspecificationsandshallbemadebyskilledworkmen.

7.4.44.8.4 Insulation Thecontractorshallprovideinsulationboardsundertheroofslab.

Theinsulationboardsshallbeof25mmthicknesscementedexcelsiorboardsconformingtoJISA5404orequivalent.

Theinsulationboardsshallbefixedtoformsofslabconcretebyusingnail. 7.4.44.9 Ceiling Access

Ceilingaccessesshallbe locatedatsuitableplaces formaintenanceof the lightingsystemandairconditioningductsandshallbethesizeof600mx600mm.

The materials of the frame for reinforcement of access board shall be made of the samematerialsastheceiling,shallbeofaluminumconformingtoJISG4100.

7.4.44.10 Nameplate For Rooms

Nameplatesshallbeprovidedonalldoorsofroomsfacingoutdoors,corridorsandotherrooms.

Thesize,materialsandnameontheplatesshallbedesignatedbytheengineer.7.4.44.11 Accordion Partition Accordionpartitionshallbeprovidedasindicatedinthedrawings.

Accordionpartitionshallbeofvinylchlorideleather,runner,hingeplate(JISG3141Spec.1.2mmgalvanized),wirerods(JISG3505orequivalent)hangerrail(JISH4100-6063,T5orequivalent)frames,(HISH4100-6063,T5orequivalent)magnet,cushionrubbersandframeholderweightofpartition1m2shallbe7Kgorless.

Panelshallbeofplasticlaminatedboardorsteelandpaperhoneycomb.

DoorsshallbeofthesamematerialsaspanelsanddoorframesshallbeofAluminumAlloyExtrudedshapes.

7.4.44.12 Toilet PartitionsIn Case of common toilet:

Melaminecoatedplywoodtoiletpartitionsshallbefurnishedandinstalledatthelocationsindicatedinthedrawingsandasdescribedherein.

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Toilet partitions shall supportedby stainless standing supporters anchored into the floorandyheadconnection(galvanizedsquaretubing).

Partitionsshallbeflushtype,consistingoftwosheetsofwaterproofplywood.Theplywoodshallbecoatedwithmelamine.Allpartitionsandscreenshallbeerectedplumb,levelandinperfectalignment,withhardwarefullyequippedforproperoperation.

7.4.45 Sodding And Planting 7.4.45.1 Sodding 7.4.45.1.1 General

The Contractor shall furnish all work including labor equipment, materials, construction,etc.,inconnectionwithsoddingwork.

7.4.45.1.2 Top Soil with Fertilizer

Stones, leaves, pieces of wood and all foreign matter shall be cleared away beforeplacementofthetopsoil.

Topsoilshallbeapprovedbytheengineer.Thesoilshallbehauledandplacedwhenitissufficientlydryforspreading.

Manure fertilizer shall be well rotted, unleashed, and free from sawdust, shaving, refuseand/orharmfulchemicals.

All manure delivered shall be free from any degree of fly manifestation. All manurefertilizershallbespreadandmixedwiththetopsoilwithin48hoursafterarrivalon thesite. Fly breeding prevention shall be by the use of insecticides and / or larvaecides asapprovedbytheengineer.

Areas to be sodded shall be prepared by placing top soil in the areas to the requiredthickness.

Thecentralpartofsuchareasshallbemadehigherincomparisontothesurroundingstoensureproperdrained.

7.4.45.1.3 Sod Planting

Sodplantingshallbecarriedoutwhereindicatedinthedrawings.Sodshallbeplantedinfirmcontactwiththebed,andplantingworkshallbecarriedoutbyskilledworkmen.

Density of sod planting shall be 70% or more of the area. After fixing the sheets of turf,sandysoilshallbespreadattherateof0.01-0.02m3persquaremeterbyusingasieve.

7.4.45.1.4 Leveling of Ground

Before planting the sod, the contractor shall remove all foreign matter, such as weeds,stonesandpiecesofwoodandleveltheground.Thecostofthelevelingofthegroundshallbeincludedinthepriceofthegrassplanting.

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7.4.45.1.5 Watering Wateringequipmentofthetypewhichpreventsdamagetofinishedsurfacesshallbeused. Shouldthesodbecomedry,itshallbewateredsoastowetthetransplantedsodthroughtot hebottomandthroughtoatleast5cmofthesodbedaswell. Additionalwateringshallbemadeasdirectedbytheengineer.7.4.45.1.6 Protection

Protectionofseededbedsagainsttraffic,humanorotherwise,shallbeprovidedbyerectingbarricadesimmediatelyafterworkiscompletedandbyplacingwarringsigns,markersetc.asdirectedbytheengineer.

7.4.45.1.7 Maintenance Sodden areas shall be maintained (watering, cutting, etc.) by the contractor until takingover.7.4.45.1.8 Clean Up

After the turning operation has been completed, the surface shall be cleared of all toneslargerthan2cmindiameterandofallroots,brush,trashorothermatterthatmayinterferewithmaintenanceoperations.

Anypavedareaoverwhichhaulingoperationisconductedshallbekeptcleanandanytopsoilorothermaterialswhichmaylieuponthepavedsurfaceshallbepromptlyremoved.

7.4.45.2 Planting7.4.45.2.1 General

The Contractor shall furnish all work including labor, equipment, materials, constructionetc.inconnectionwithplantingwork.

The Contractor shall submit colored pictures of all varieties of trees and flowers to beplantedtotheengineerforapproval.

7.4.45.2.2 Planting Concept Thenumberofplantingsandspecieoftreesandshrubberyshallbeasfollows. Trees : 25trees Shuddery : 38m2 Notes : Tree………………around4.0m Shrubbery…………lessthan1.0m Treesshallbeplantedsoastoprovidesuitableshade.

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The contractor shall survey the soil condition of the site for planting of the trees andshrubberystatedaboveandshallthencarryinsoilsuitableforthesaidplants.

7.4.45.2.3 Workmanship

Before plants are carried to the site, the contractor shall prune one-fifth of the trees leafareasbutshallretainthenaturalform.Sprayshallnotcausewiltingoftheleaves.Plantingdetailsareshowninthenextsheets.

GroundLinetobethe Sameasatthenursery Drawings Surveyor’s Flagging Tape(white) Fixingwire Spread120oApart 50x100x900Stake ConstructEarthSaucerwith 100mmhigh BackfillwithFertilizer

SHRUB PLANTING DETAILS

7.4.46 Plumbing Equipment Work 7.4.46.1 General

This clause covers the performance of all water supply, sewage and sanitary equipmentworkstobeexecutedaccordingtothedrawingsandthesespecifications.(1) WaterSupplyEquipment(2) SewageandAirVentEquipment(3) SanitaryEquipment(4) ClarificationTankEquipment

The contractor shall submit shop drawings of the fabricated items to the engineer forapproval. The shop drawings shall clearly show the details of fabrication, installations,dimensions, sizes, operation, methods of anchoring and any other pertinent detailsrequired for satisfactory installation and the contractor shall submit theresult of testsatdesignateddatespecifiedhere-in-after.The contractor shall provide the spare parts for three years normal operation, unlessotherwisespecified.

7.4.46.2 Equipment and Material

The equipment, materials and accessories as specified herein shall be furnished togetherwithsparepartsforthree(3)yearsnormaloperationexceptasindicatedotherwise.

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7.4.46.2.1 Drinking Water Tank (1) TypeofDrinkingWaterTank

Drinkingwatertanksshallbeofearthquakeproofconstructionandconsistofasandwichconstructionpanelwithfacingmaterialscomprisingfiberglassreinforcedpolyester(F.R.P.)mad from unsaturated polyester resin and glass fiber of which the core shall be formedplastic.

(2) Materials

Theunsaturatedpolyesterresintobeusedforthefacingmaterialshallbewaterproofandweatherproofandharmlesstohumanehealth.

ThefiberglassshallbemadefromnonalkalifiberglassasstipulatedinJISR346~3417. Thefoamedplasticmaterialstobeusedformthecoreshallberigidandclosedcell. Anyfillersandcoloringagentsshallbeharmlesstohumanheath. (3) Accessories Thedrinkingwatertankshallbeprovidedwiththefollowingaccessories. (a) Waterinletpipeconnections(F.R.P.) 1set (b) Wateroutletpileconnections(F.R.P) 1set (c) Drainagepipeconnections(F.R.P) 1set (d) Connectionsforoverflowholeandoverflow Withinsecticidenets(Theinsecticidenetsshall bemadeofplasticandtheconnectionsshallbe madeofF.R.P) 1set (e) Airpassageandairventwithinsecticidenets (Theinsecticidenetsshallbemakeofplasticand thepassageadventshallbemadeofF.R.P) 1set (f) Lockingtypemanhole(PlasticDiameter:more than500mm) 1set (g) Reinforcingmaterials,supportmetalsandstands forelevatedwatertank. 1set (Rolledsteelhavingpropertiesinaccordancewith JISG3101andwithdimensionsandshapesin accordancewithJISG3192) (h) Steelladder 1set (i) Electrodemount (j) Breakwatercover 1set

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(4) Shapes,DimensionsandPerformance

The shapes and dimensions of the elevated water thank shall be in accordance with themanufacturer’s specifications, and the performance shall be as specified in “ List ofEquipment”intheDesignDrawing.

7.4.46.2.2 Hot Water Storage Facility (1) Type

Thehotwaterstoragefacilityshallconsistofahotwaterstoragetankandanelectricheatbuiltinawallhangingtypecasingmadeofstainlesssteel.

(2) Materials Thehotwaterstoragetankandthecasingshallbemadeofstainlesssteel. (3) PowerSource SinglePhase220V,50Hz (4) Accessories Thehotwaterstorageheatershallbeprovidedwiththefollowingaccessories: (a) BallTap(15mm) 1set (b) Drainagehole 1set (c) Waterlevel(MadeofglasswithProtectivemetal) 1set (d) Thermometer 1set (e) OverflowHole1set (f) Thermostat 1set (5) Shapes,DimensionsandPerformance

The shapes, dimensions and performance of the hot water storage heater shall be inaccordancewiththemanufacturer’sspecifications.

7.4.46.2.3 Pressure Pump Unit (1) Type Pressurepumpunitshallbefactorybuiltandfactorytestedproduct.

Theunitisconsistoftwopumps,smallpressuretank,controlpanel,necessarypipes,cableandpressuregaugethesecomponentsarearrangedonthecommonsteelframe.

(2) SystemOperations

(a) In initialoperation,onepumpstartsbypushbuttonprovidedoncontrolpaneland starts to supply water in the pressure tank. The pump stops when thepressureriseofthepressuretank.

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(b) Whenbyconsumedwaterinthepressuretankthepressureinthepressuretankfalltheotherpumpstartstorunandsupplywatertopressuretank.

(c) All the signal of pumps START-STOP are controlled by a pressure switch

providedonpressuretank.(d) Specifications

Quantity 1set Dischargebore40mm TankCapacity30liters PumpQuantity2set/unit Type Endsectioncentrifugalmotorclosedcoupledtype EndsectioncentrifugalmotorclosedcoupledtypePumpSpeed3,000rpm. MaterialsCasingCastIron Shaft StainlessSteel Impeller Bronze MotorType Drip-proof,squirrelcageraptor Voltage 400V Frequency 50Hz. InsulationClassE(4) AccessoriesCheckValveJIS10kg/cm250-2piecesGateValveJS10kg/cm250–4pieces

7.4.46.2.4 Water Supply Pump(1) Type Water supply pump shall be submergible pump, using of submerged motor and

multistagecentrifugalpump.(2) Specifications Liquid Freshwaterorequivalent Temperature 0-40oC Impeller Multistagecentrifugal ShaftSeal OilSeal Bearing Sleevebearing Cashing CastIron. Impeller Bronze Shaft StainlessSteel FlangeStandard 10kg/cm2thintype Motor Submergedcannedtype MotorInsulationClass E(3) Accessories

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10meterswaterproofcable 7.4.46.2.5 Sterilizing Equipment (1) Type The sterilizing equipment shall be chlorine sterilizing type, including of sterilizing

chemicaltankchemicalfeedpump,flowsensor,necessarypipesandcables.(2)Operation Theequipmentshallbedesignedtoinjectthechemicalinproportiontotheflowrateof

drinkingwater,usingadiaphragmpump.(3) Specification

(a)SterilizingChemicalTank Material : Polyethylene Volume : 50liter(b)ChemicalFeedPumpTypeDischargevariablediaphragmtype Output : 0.025KW Phase : 1ø Frequency : 50Hz Voltage : AC220V(c) FlowSensor Flowsensorshalldistributeelectricpulseinproportiontotheflowrate.

(4)Accessories (a)Chemicalfeedpipe;highpressurebladehose6mmø;3mlength (b) Chemicalsuctionpipe;vinylpipe5mmø;1mlength (c) Pumpbase;1set(includinganchorbolts) (d) Injectionvalve;madeofPVC;1set (e) Cable;CVV2mm2–2C;3m (d) SterilizingChemical;1set 7.4.46.2.6 Water Filter (1) Type Up-lightcasing,cartridgefilteringelementtype(2) MaterialsandSpecification

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Casing–stainlesssteel Normalusemaximumpressure–stainlesssteel Filteringelement–exchangeableplasticcartridge(reusablebywaterwashingtype)(3) Accessories Sparefilteringelement - 1set DrainCock - 1set AirCock - 1set Hole-in-anchor - 1set7.4.46.2.7 Sanitary Equipment and Accessories 7.4.46.2.7.1 General(1) AllsanitarywaresshallbeofEuropeanstandardhighqualityorequivalenttoJISA5207.(2) AllfittingsforsanitarywaresshallbeinaccordancewithEuropeanstandardhighquality

JISA5514orequivalent(3) Allaccessoriesandvisiblesanitarywaressuchasfaucets,flushvalvesandflushingpipes

shallbenickelchromiumplated. 7.4.46.2.7.2 Water Closet (Western/European Style)

●AllSanitaryFittings&FixturesshouldbeEuropeanMadeaswellasapprovedsample anddesign.

7.4.46.2.7.4 Wash Basing (For Lavatory) (1) WashBasin V.C.,6.5&wallhangingtype (2) Accessories (a) Pillarcock(13mm) (b) Angletypestopcock(13mm) (c) Washerbasintrap (d) Backhanger (e) Liquidsoapholder(Verticaltype350cc)7.4.46.2.7.4 Wash Basin (For Battery Room) (1) WashBasin V.C.,9.5& (2) Accessories

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(a) Pillarcock(13mm) (b) Eyebath (Verticalflexibletype,13mm) (c) Angletypestopcock(13mm) withwatersupplypipe (d) Washbasingtrap (e) Backhanger (f) Liquidsoapholder(pushbuttontype,360cc) 7.4.46.2.7.6 Service Sink (1) V.C.withBack (2) Accessories (a) Sinkfaucet(20mmwithfeedseat) : (b) Trap(Stype) : (c) Trapconnectionfixtures : (d) Chainandstopper : (e) Backhanger : (f) Rimcover : 7.4.46.2.7.7 MirrorThemirrorshallbeframe-lessandmoistureproof,andtheglassformirrorshallbe5mmthickand360x455mminsize,andinaccordancewithJISD3202(Float,PolishedPlateGlass)orequivalentBDSstandard.7.4.46.2.7.4 Water Cock and Similar ItemsThe main structures constituting the septic tank shall be made of FRP (fiberglass reinforcedplastic) having appropriate shape, dimensions and capacity. The structures shall have sufficientstrengthagainstsoilpressure,waterpressure, loadetc.andshallbeofaconstructionpermittingeasyinspectionandcleaning.Thefunctionalrequirementsshallbeasfollows.(1)TreatmentCapacity (a) Accommodationtreatmentfor : 5persons(b)Estimateddailyaveragevolumeofwaste:1m3/day(c)BODconcentrationindischargewater:90ppm.(2)TankEquipmentTheseptictankshallconsistsofblowerunit,pretreatmenttankandmaintankandtheequipmentrequiredforthetankshallbeofthefollowingspecifications.BlowerMotor: 0.04m3/min,0.2KW,threePhase,415V,50Hzx1set Accessories : Distributionboardandcable,airpipingandrequiredpertinent.

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(3)AccessoriesSterilizationChemical : 1set

Sanitaryappliancesshallconformtothefollowingstandards:

BDS 1162:1987 SpecificationforCeramicWashBasinsandPedestals;

BDS 1163:1987 SpecificationforVitreousSanitaryAppliances,

Part-1,GeneralRequirements;

Part-2,SpecificRequirementsforWaterClosets;

Part-3,SpecificationRequirementsforUrinal(Bowltype);

Part-4,SpecificRequirementsforFootRest;

Part-5,SpecificRequirementsforIntegratedSquattingPans.

ASHRA E90A-80 EnergyConservationinNewBuildingDesign;

ASHRA E90B-75 EnergyConservationinNewBuildingDesign;

AWWA C700-77 ColdWaterMeterDisplacementType;

AWWA C701-78 ColdWaterMeterTurbineTypeClass-I;

AWWA C702-78 ColdWaterMeterTurbineTypeClass-II;

AWWA C702-78 ColdWaterMeterCompoundType,

BS1125:1987 Specification for WC Flushing Cisterns (Including Dual Flash

CisternsandFlushPipes);

BS1244 MetalSinkforDomesticPurposes;

BS1254:1981 SpecificationforCSeats(Plastics);

BS1329:1974 SpecificationforMetalHandRinseBasins;

BS1876:1992(1977) SpecificationforAutomaticFlushingCisternforUrinals

TREATMENT PROCESS

OF SEPTIC TANK

7.4.46.2.8 Piping Materials and Pipe Fittings 7.4.46.2.8.1 Pipe(1) WaterSupplyPipes

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ThewatersupplypipeshallbethesteelpipelinedwithrigidPVCinaccordancewith

JWWA-K66.(2) DrainageandAirVentPipes Thedrainageandairventpipesshallbethegalvanizedsteelpipeinaccordancewith

JISG3442,tar-epoxycoatingsteelpipeinaccordancewithJISG3443andHASS-210,and/orthecentrifugalreinforcedconcretepipeasspecifiedinJISA5303.

7.4.46.2.8.2 Pipe Joint(1) WaterSupplyPipeJoints Thewatersupplypipejointsshallcomprisescrewedtypeandflangetype.Screwed

typepipejointsshallbemalleablecast ironpipejointscoatedwithplastic in `accordancewithJISB2301.Theflangetypepipejointsshallbemadbyweldingthe flangetotheendsurfaceof thesteelmade jointsasstipulated in JIS B2211or JIS B2212,and furtherbyliningtheinternalsurfacewithrigidPVCofthesamespecificationasthatusedforliningforliningofthesteelpipe.

(2) DrainageandAirVentPipeJoints The drainage and air vent pipe joints shall be malleable cast iron pipe joint in

accordancewithJISB2301,screwedtypedrainagepipejointinaccordancewithJISB23.3andrigidPVCpipejointaccordancewithJISK6739.

7.4.46.2.8.3 Gate ValvesThegatevalveshallbethe10kg.Cm2bronzescrewedorflangedtypegatevalveasstipulatedinJISB2023,andB2044.7.4.46.2.8.4 Check ValvesThe check valve shall be the 10 kg /cm2 bronze screwed or flanged swing check valve asstipulated.7.4.46.2.8.5 Flexible JointsThe flexible joint shall be of a bellows type and shall have sufficient flexibility and resistanceagainstpressure.Thebellowsandprotectivesteelbandshallbemakeofcoldrolledstainlesssteelplate/sheet(SUS–304)asstipulatedinJISG4305.Thelengthofoneflexiblesectionshallbe400mm.7.4.46.2.8.6 StrainersThe strainer shall be ofa Y type. The case the nominal diameter is 50mmm or less, the strainershallbeofascrewedtypemadeofbronze,butincasethediameteris65mmorover,thestrainershallbeofaflangedtypemadeofcastiron.Thecleanoutplugshallbemakeofbrass,andthestrainerelementshallbemadeofstainlesssteel,onesparestrainerelementshallbefurnished.

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7.4.46.2.8.7 Drainage Pipe Fitting(1) General

(a) Thewatersealingdepthoftrapshallbe50mmormore,andtheeffectiveareaofthedrainageholeforstrainershallnotbelessthanthesectionalareaofthedrainagepipe.

b) Thenickelchromiumplatedsectionofthedrainagepipefittingsshallbeequivalentto

orhigherthanClass1orGrade2inJIS H8617(ElectroplatedcoatingofNickelandChromium).

(2) FloorDrainTrap

The floordrain trapshallbemadeofcast ironandthestrainershallbenickelchromiumplatedbrass.Thefloordraintrapforasphaltwaterproofedfloorshallbeofawaterproofingtype,butthatforotherfloorsshallbeofanordinarytype.

(3) FloorCleanoutThe floor clean out shall be of a screwed type made of brass having a nickel chromiumplatingfinish.Thefloorcleanoutforasphaltwaterproofedfloorshallbeofawaterproofingtype,butthatforothertypesoffloorsshallbeofanordinarytype.

(4) UnderfloorCleanout Theunderfloorcleanoutshallbeofascrewedtypemadeofbras.(5) DrainagePipeFittings

Thedrainagepipe fittingsshallbemakeofbrasshavinganickelchromiumplating finishandthechainandstoppershallbemadeofstainlesssteel.

7.4.46.2.8.8 Pipe Washers Thepipewashershallbemadeofnickelchromiumcoatedbrassorstainlesssteel.7.4.46.2.8.9 Pipe Sleeves

Thepipesleeveshallbemadeofsteelpipeorsteelplatewithathicknessof0.4mmorover(0.7mm or over in case the nominal diameter exceeds 200mm). However, the non-waterproofedfloorpopesleevetobeusedindoorsshallbemadeoflaminatedcardboard.

7.4.46.2.8.10 Pipe Support Fittings(a) The pipe support fittings shall resistant to contraction and expansion, rolling etc. of pipe

andbeofaconstructionhavingsufficientbearingstrengthagainstloadofpipewhenliquidiscontainedinside.ThematerialstobeusedshallbeinaccordancewithJIS G3101(RollSteelforGeneralStructure).

Allsteelfittingsshallbefinishedbygalvanizing.

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(b) The inserts shall have sufficient strength for supporting the pipe and shall have aconstruction having suitable for connecting hangers etc. All inserts shall be made of castiron,pressformedmalleablecastironorsteelplate.

7.4.46.2.8.11 Cementing /Bonding Materials(1) ThreadSealingMaterials

(a) The threat sealing tapes shall be in accordance with JIS K6885 (unsinteredpolytetrafluoroethylene tapes for thread sealing (raw tapes) , and shall neither behazardoustohumanhealthnorcauseadverseeffectsupondrinkingwater.

b) Thepastesealingagentshallnotbeaffectedbytheliquidinpipeandshallconsistof

contents applicable to the purpose of use. In case the agent is used for sealing ofpiping fordrinkingwater, itshallnotbehazardoustohealthnorcauseanyadverseeffectupondrinkingwater.

(2) Packing(s)

The packing shall be in accordance with JIS K6353 (Rubber Goods for Water WorksService) JIS R3453 (Compressed Asbestos Sheets) etc. and have sufficient durabilityapplicabletotherespectivequalityofwater,waterpressure,temperatureetc.

(3) CaulkingLead

Thecaulkingleadshall,inprinciplebethe5thClassofthosestipulatedinJISH2110(PigLead).

(4) CaulkingHemp

Thecaulkinghempshallinprinciplebethejuteof#130singlethreadwhich,tiedinabundlehasadiameterorabout25mm.

7.4.46.2.8.12 Basin and Basin Cover(1) General

(a) The materials for iron castings shall be equivalent to of higher than Grade 3 asstipulatedinJISG5501(GrayIronCastings)

b) The iron castings shall be baked with refined tars in accordance with JIS K 2473

(ProcessedTars)towhichmorethan2%oflinseedoilordryingoilismixed,orshallbe cold painted with refined bituminous materials to which synthetic resin finishesadded.

(2) InvertBasin

(a) Theinvertbasingshallbeofaconcreteconstructionandallvisibleportionsshallbefinishedbymortar,thebasinshallbefurnishedwithacoverandaninvertapplicabletothepiperdiametershallbeprovidedonthebottomofthebasin.

(b) Thecovershallbemakeofcastironwithchain,andshallbeofandoorprooftypeable

towithstandtheweightof2,500kg.

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(3) DrainageBasin

(a) The drainagebasin shall be a concrete construction and all visible portions shall befinishedbymortarcoating.Moreover,thebasinshallbefurnishedwithacover.

(b) Thecovershallbemadeofcastironwithchainandshallbeofandoorprooftypeable

towithstandtheweightof2,500kg.7.4.46.3 Execution 7.4.46.3.1 Foundation Works(1) Thefoundationshallbeofreinforcedconcreteconstructionabletowithstandtheweightof

equipment and external forces and having sufficient bearing surface for installation ofequipment.The foundationshallbebuilton the floororgroundhavingsufficientbearingcapacity.

(2) Cement to be used shall be the ordinary Portland cement in accordance with JIS R5210(PortlandCement).

(3) Regardingthesizesofaggregate, thesizeofgravelshallbe25mmor less thatofcrushed

stoneshallbe20mmorlessandthatofsandshallbe2.5mmorless.7.4.46.3.2 Erection Works 7.4.46.3.2.1 Drinking Water Tank(1) Thedrinkingwatertankshallbefirmlyfixedwithanchorboltsshavingsufficientstrength

sothatthetankwillnotslidelaterallynormoveinanywayduetohorizontalseismicforce.(2) Thedrinkingwatertankshallbeinstalledonahorizontalplaneonthefoundationhavinga

steelmadebaseandthefoundationshallhaveanevenbearingsurfaceagainsttheload.Thetankandthesteelbaseshallbefixedfirmlywithanchorbolts.

(3) Afterinstallation,thetankshallbecleanedandwashedwithwater.Then,thetankshallbe

sterilizedbyusingsolutionofhypochlorousacid,etc.(4) Thepipingrelatedtothetankshallbesosupportedthatweightofthepipesnotbeapplied

tothetank.Flexiblejointsshallbeprovidedforallrespectiveconnectingpipestothewatertankexceptforthedrainpipeandairventpipe.7.4.46.3.2.2 Wall Hanging Type Electric Water HeaterThe wall hanging type electric water heater shall be set firmly on the wall by using expansionjoints.7.4.46.3.2.3 Sanitary Ware, Accessories and Fittings (1) General

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(a) Incasewallhangingfittingsarefixedonaconcretewallorbrickwall,expansionboltsshall,inprinciplebeused.

(b) In case a metal panel or lightweight steel framed board wall is set, steel plate and

worked angle materials or hard wood patch shall be fixed to the sanitary ware inadvance.

(c) Incaseapartofthesanitarywareisembeddedinconcrete,theportionofthesanitary

ware thatcomes intocontactwithconcreteormortarshallbecoveredwithasphalthavingathicknessof3mmorover.However, thebottomcontactsurfaceofsanitaryware,shallbefilledwithsand.

(2) WaterCloset(Western/EuropeanStyle)

(a) Theupperendofthestoolshallbesethorizontallyinplaceafterdecidingtheprecisesettingpositions.

(b) Priortoconnectingthestooltothedrainleadpipetheconnectingendoftheleadpipe

shall be flared up to the diameter of the flange, and after inserting the non drinksealingmaterialsbetween theexternal surfaceof the flange and connecting end thestoolshallbeconnectedtothedrainleadpipebynutsfastenedfromabovebyflangefittingsandbolts.Theplatethicknessoftheexternalendoftheflaredleadpipeshallnotbelessthan2mm.

Moreover, the end of the flange for the lead pipe to be connected to the stool shall besupportedsufficientlywithhangersetc.sothatnoloadofdrainpipe,etc,willactdirectlyonthestool.

(3) WashBasin

(a) Thebracketorbackhanger/sshallbefirmlysetinplace,andthesashbasinsshallbefixedcarefullysothattheuppersurfaceofthebasingwillbekepthorizontalwithoutexhibitinglooseness.Inordertoeliminateleakageofwater,heatresistantnondryingsealingmaterialsshallbefilledarounddrainholesofthebasinsandaroundopeningsbetweenthedrainpipefittings.

b) Thesettingheightofthebasinsshallbe800mm(approximate)fromthefloorsurface

totheupperfrontendofthebasins.(4) ServiceSink

Thetrapshallbesetinplacewithoutanymisalignment,andtheconnectionofthesinktothe drain pipe shall be carried out in accordance with the procedures for connection ofstoolin(2).Settingofbackhanger(s)andconnectionbetweendrainholesoftheSINKanddrain pipe fittingsshallcarriedout I accordance with the procedures for the above washbasinsin(4).

(5) WaterCock

Thewatercockshallbefixedfirmlyafterprecisecenteringbyfullytakingintoaccounttheconvenienceofuseandharmonywittythesurroundingfacilities.

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A sufficient space for the spout shall be provided between the end of the spout of watercockandthefloodlevelrimofthedrainreceptacle.

(6) Mirror Thesettingheightoftheupperendofthemirrorshall1,800mmformthefloorsurface. 7.4.46.3.2.4 Septic Tank

Reinforcedconcretefoundationshallbeprovidedandthetankshallbefirmlyfixedtothefoundationsoastowithstandupwardwaterpressure.

7.4.46.3.3 Piping 7.4.46.3.3.1 Water Supply And Water Hydrant Piping(1) General

(a) Prior to execution of piping work, detailed study shall be made on the relationshipbetweenotherpipingandequipment,andallpositionsforpipelayingshallbedecidedbytakingintoaccountthepreciseslopeoftherespectivepiping.

Inthecasewherepipingislaidinsideabuilding,settingofthepipesupportfittings

and embedding of pipe sleeves shall be carried out without any delay and inaccordancewithprogressofthework.

(b) Theflangejointsshallbeinsertedforallmainpipingatappropriateintervalsinorder

toensureeasyremovalofsuchpiping.

(c) Inthecasewhereanypipingisbranchedfromthemainpiping,T-jointsshallbeused.(d) Asair releasevalve shall be providedat the dead air spaceportion in piping, anda

muddischargevalveshallbeprovidedattheportionwheremudiscollected.Thesizeofthemuddischargevalveshallbethediameteroftherelatedpipe,providedthatthesize of the valve shall be 25mm in case the nominal diameter of the pipe exceeds25mm.

(e) Incaseanyanti-sweatcoveringisnotprovidedforpiping,pipewashersshallbefixed

toallportionsofpipingthatpenetratethroughceiling,floors,wallsetcandisvisiblefromtheoutside.

(f) Anyopeningsbetweenthepipingthatpenetratesthroughfireserviceareasetc.shall

befilledwithrock-woolheatinsulationorothernon-combustiblematerials.(g) Incasewhereapipesleeveisusedataplacerequiringwatertightness,leadcaulking

shallbeprovidedintheopeningbetweenthesleeveandpipe.(h) Inthecasewhereanysteelpipeandsimilarmaterialsarelaidundertheground,such

pipeshallbeprotectedagainstcorrosionbyeitheradoublecoatingofcoattartoradouble winding of corrosion proof vinyl tapes (JIS Z 1901 “Protective PolyvinylChlorideTapes).

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(i) Anyrepairofsteelpipe,castironpipeandleadpipewithcaulkingshallbeprohibited.(j) After completion of piping work, the inside of the piping shall be cleaned by water

pressure on the occasion of hydrostatic test of the piping. In the case of piping fordrinkingwater.Thepipingshallbesterilizeduntilfreeresidualchlorineof1.2ppmoroverhasbeendetectedattheendofthepiping.

(2)Gradient

Inthecaseofhorizontallyrunningpipe,theupfeedpipeshallhaveanupwardslopeandthedownfeedpipeshallhaveadownwardslope.Inprinciple,thegradientshallbe1/250.

(3) SupportPitch

(a) The support pitch of the horizontally running pipes shall, in principle, be inaccordancewiththevalues in the followingtableand,wherevernecessary ,allbentsectionsandbranchingsectionsshallbesupported.Inthecasewheresteelpipesorsimilar pipes are supported with hangers, a steady rest shall be provided for eachhorizontallyrunningpipeinordertoavoidloosenessofthepipeduetomovementatthetimeofearthquake.

(b) Asteadyrestshallbeprovidedforindoorverticalpipeat leastatonespotonevery

floor.

Table-12.1 : Maximum Support Pitch of Water Supply Pipe Nominalpipediameter 20orless 25–40 50–80 100–150 200ormore

Supportpitch 1.8 2.0 3.0 4.0 4.0 7.4.46.3.3.2 Drainage and Air Vent Pipe(1) General

(a) Allhorizontallybrancheddrainagepipes,etc.shallbecombinednearlyhorizontallyatanacuteangeloflessthan45o.

(b) Incasebentleadpipeisused,thepipeshallbecarefullyfabricatedsoasnottoimpair

itsroundness,andnobranchdrainagepipeshallbetakenforprotection.(c) Nowastewatershallbedischargeddirectlyformtheformthefollowingequipment. - Airconditioners - Drinkingwatertank - Pumps(d) Indirect drainage pipe shall be opened while maintaining a space of over twice the

diameterofthepipefromthedrainreceptacleandfloodlevelrim.Incaseanobstacleis foreseeninprovidingtheaboveopening,appropriatemeasuresshallbe taken forprotection.

(e) The lowest portion of the vertical drainage pipeshall be fixed witha support standwherenecessary.

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(f) Anyairventpipeshallberunoutverticallyoratanangleof lessthan45ofromthehorizontally branched drainage pipe and in no case shall the pipe be run outhorizontally.

(g) Inthecasewhereairventpipesonfloorsareconnectedtoverticalairventpipes,the

saidpipesshallbeconnectedattheplaceover150mmfromthefloodlevelrimoftherelated equipment. Vertical air vent valves shall be connected to the stack vents inaccordancewiththeaboveprocedures.

(h) Incaseahumppipeisburied,apitshallbeexcavatedfromtheloweradofthepipeto

depth of about 100mm in case the nominal diameter of the pipe is 300mm. Afterunscrewed crushed stone, unscreened gravel or pike sand has been laid andcompacted, the pipe shall be laid. However, the portions where joints are providedshallbeexcavatedfurtherifnecessary.

Initial back filling of pipe shall be carried out up to the center line of the pipe to

ensureimmovability,andaftersufficientcompaction,thepipeshallfinallybeburied. Provisionsotherthanthosedescribedinthisparagraphshallbeinaccordancewith

thegeneralprovisionsin12.3.4.1.

(2) GradientThegradientofhorizontallyrunningdrainagepipessaidinsideabuildingshallbe1/100.Allairventpipesshallhaveanupwardslopefacingtheverticalpipesandshallbefreefromreverseslopeandunevenness.

(3) SupportPitch

(a) The support pitch of steel pipes shall be in accordance with the applicableprovisionsinTable12.1.

(b) Horizontallyrunningcastironpipesshallbesupportedatapitchoflessthan1.6m,

and the deformed fittings to be connected shall be supported at a pit of less tan0.6m,respectively.

7.4.46.3.3.3 (1)ConnectionofPipes

(a) Allpipesshallbecarefullycutatarightangleagainsttheaxialcenterofthepipessoastoavoidanydeformationofthesections,andthecutendshallbefinishedsmoothly.(b) Allpipesshallbeconnectedafterremovinganychips,dustandotherforeignmatter

andafterconfirmingthatallsuchforeignmatterhasbeencompletelyremovedforminsidethepipes.

(c) Incasepipingworkistemporarilysuspended,allpipesshallbesufficientlyprotectedtoavoidentryofanyforeignmatter.

(2) WaterSupplyPiping

(a) No water supply piping shall in principle, be connected according to an insertionsystemunlessspecifiedotherwise.

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(b) Epoxy resin or synthetic rubber rust inhibitors shall be sufficiently coated over theendfaceofthreadedportionsandthebottomofthreadedportionsofjoints.Allrustinhibitorstobeappliedforanydrinkingwaterpipingshallbeappliedforanydrinkingwaterpipingshallbeharmlesstohumanhealthandshallcausenoharmfuleffecttothequalityofdrinkingwater.

(3) DrainageandAirVentPiping

(a) Priortoconnectingthegalvanizedsteelpipes,thepipesshallbecorrectlythreadedsothat a slight clearance is provided between the end face of pipes and the recess ofjointsinordertoobtainthetaperedthreadedpipeportion.Then,thesteelpipesshallbescrewedtightlyintothejoints.

(b) All case iron pipes shall be connected by using rubber rings. In this case, the pipes

shallbeinsertedintotherubberringsuntiltheendofspigotcomesintocontactwiththebottomofsocket.Then, therubberrings thathavebeen inserted intoapositionneartheendofspigotinadvanceshallbeinsertedintothepipescarefullysothatnotwisting will occur in the opening between the socket and spigot. Then, the rubberrings shall be set in close contact with the pipes while uniformly fastening the tapboltsandnutsusingajunkring.

(c) Al rigid PVC pipe shall be carefully connectedby a cold working method so that no

stepwilloccurbetweentheconnectedpipes.Theflowofwaterinthepipingshallbesmoothanduninterrupted.

(d) Allcentrifugalreinforcedconcretepipesshallbeconnectedbyusingcollars. After both ends of the pipes have achieved tight contact with each other at the

centralpartofthecollarandcarefullysetinplacetoensureproperalignmentinthesurroundingopening,stiffconsistencymortarshallbeplacedintotheopening.Inthiscase,allcementandwaterinsidethepipesshallbethoroughlyremoved.Incaseoneend of a pipe is made into a socket form after connecting a collar to the end withmortar,mortarshallbeplacedabout10mmawayfromthepipeend.

7.4.46.3.4 Antisweat Covering 7.4.46.3.4.1 MaterialsThe anti sweatcoveringmaterials, exterior andauxiliary materials shall be asspecified in Tablebelow.

Table - 12.2.1 : Antisweat Covering Materials, Exterior and Auxiliary Materials (1/2) Classificationofmaterials : SpecificationsHeatinsulationmaterialsGlasswoolheatmaterials :Theglasswoolheatinsulationtubesshallbeinaccordance

with JIS A9505 (Glass wool heat insulation materials) orequivalent

ExteriorMaterials

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GalvanizedSheets :Thegalvanizedsheetsshallbeinaccordancewithgrade2inJIS G3302 (Galvanized Sheets.) The standard thickness oforiginal sheet shall be 0.3mm when the sheet is used forinsulating pipes, valves, etc. with an outside diameter of250mm or less, but in other cases, the thickness shall be0.4mm.

CottonCloth :Theweightofcottonclothshallbe115gormoreper1m2In

case, the cloth is used for pipe, etc. it shall be cut intoappropriatewidthsofatapeform.

GlassCloth : Theglassclothshallbenon-alkaliplainglassslothobtained

byprocessingEP211Cintoanon-frayingtypeasstipulatedinJISR3414(GlassCloth).

PVCType(VinylTape) :ThePVCtapeshallbenon-tackytapeofmediumglosswitha

thickness of 1.2mm in accordance with JIS Z1901(ProtectivePolyvinylChlorideTapes).

WaterproofingTempcloth(Linen) :The waterproofing linen shall be Hossian cloth No. 7 as

stipulated in JIS L 2405, over one side of which blownasphalt,asstimulatedinJISK2207(PetroleumAsphalt),hasbeen coated. The linen shall be cut into a tape form of anappropriate width in case it is used for waterproofing ofpipesetc.

Table -12.2.2 : Antisweat Covering Materials, Exterior and Auxiliary Materials (2/2)Classificationofmaterials : SpecificationsAuxiliaryMaterials Moldingbasepaper : The base paper shall be molding base paper of 370g more

perm2.Asphaltroofing : The asphalt roofing shall be the one manufactured in

accordance with JIS A6006 (Asphalt Roofing Felts) (FiberBase)(Self-FinishedBitumenFelts),andmorethan17kgperroll(21m2).

IronWire : The iron wire shall be the one as stipulated in JIS G3532

(BarbedWires)whichhasbeengalvanized.SteelFrame :In principle, the steel frame shall be the one made of steel

sheet with a standard thickness of the original sheet of0.4mm or more as stipulated in JIS G 3302 (GalvanizedSheets)

AdhesivePVCTape : The adhesive PVC tape shall be in accordance with JIS

Z1525 (Pressure Sensitive Adhesive Polyvinyl ChlorideTapes)withathicknessof0.2mm.

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Bandandtoothedlockwasher :The band toothed lock washer shall have a thickness of1.2mm or more, and shall be made from the materials inaccordance with JIS G4305 (Cold Rolled Stainless SteelStrips),orJISH3201(BrassPlates).However,theonesmadefrombrassshallbefinishedbynickelchromiumPlating.

Thewidthofbandshallbe20mm.Adhesive :In principle, acrylic emulsion adhesive shall be used for

adhesion of glass cloth, glass filament mat and aluminumglands cloth. Vinyl acetate adhesive shall be used foradhesion of formed polystyrene heat insulation materials,andthechloroprenerubberadhesiveforadhesionofrivets.

7.4.46.3.4.2 Execution (1)General

(a)Thethicknessof insulationshallbethatofthe maininsulationmaterialandshallnotincludethethicknessofexteriormaterialsandauxiliarymaterials.

(b)Theclearancebetweenmutualinsulationmaterialsshallbeassmallaspossible,andin

nocaseshalljointsforoverlappingsectionsbeprovidedonthesameline.(c) Bandandtubeshapedcoveringshallbetightlyboundwithgalvanizedwire.Bandsshall

beboundata50mmpitchandtubesshallhavetwowindingsatleastthreeplacespertube. All overlapping portions and joints of tubes shall be joined together by usingadhesivetapes.

(d)In principle, the width of tape winding shall be 15mm or more, and taint of other

overlappingportionsshallbe35mmormore.Inthecaseofwater-prooflinenwrapping,galvanized wire shall be wound twice over the wrapping at an interval of 2m, thenasphaltprimershallbecoatedtwiceofthewindings.

(e)Tapes shall be wounded starting form the lower part and then proceed to the upper

partofpiping.Shouldtherebeanypossibilityofdeviationincaseofpolyvinylchloridetape,etc.,suchdeviationshallbeeliminatedbyusingadhesivetapesetc.

(f) Thelaggingplateovertheinsulationofthepipeshallecarriedoutinabedoverform,

andthatoftheventsectionshallbecarriedoutintoafanform.(g)Shake-proofwashersshallbeattachedtotheendsofheatinsulationsectionsforindoor

piping,andbandsshallbeattachedtobranchandbentsectionsofthepiping.(h)Theendsofheatinsulationsectionsshallbeprotectedasrequireddependinguponthe

typesandpurposesofheatinsulationmaterialstobeused.(2) MaterialsandSequenceofWorksaccordingtothetypesofheatinsulation Thematerialsandthesequenceofworkaccordingtothetypesofheatinsulationare

asindicatedinTable12.3.

Table - 12.3

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TypeofCoveringWork MaterialsandSequenceofwork Remarks (I)GlasswoolheatinsulationmaterialsA 1.HeatInsulationtube Outdoorexposedpiping 2.GalvanizedWire 3.RoughPaper 4.CottonClothB 1.HeatInsulationTube InsideCeilingand pipeShaft 2.GalvanizedWire 3.PVCTape(3)ThicknessoftheHeatInsulation(Coverings)ThethicknessoftheinsulationshallbeasindicationinTable12.4.

Table - 12.4 : Thickness of Insulation (Unit: mm)Nominaldia.Type 1020253240 50 65 80 100RemarksIwatersupplydrainagepiping202020202020202025GlassWool(4) HeatInsulation(Coverings)forwatersupplypipes(includingjointsandvalves)

(a) The materials and sequence of works according to the types of work shall be inaccordancewithTable12.3.

(b) ThethicknessofinsulationshallbeinaccordancewithTable-12.4.

Table 12.5

Placeofapplication Materials and sequence ofwork

ThicknessofInsulation

Indoorexposedpiping a I Piping inside ceiling and pipeshaft

a I

(5) AntisweatCovering

(a) The materials and the sequence of work according to the types of work shall be inaccordancewithTable12.3.

(b) Thethicknessoftheinsulation(Covering)shallbeinaccordancewithTable12.4.

Table - 12.6

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Placeofapplication Materialsandsequenceofwork Thicknessofinsulation Indoorexposedpiping a I Piping inside ceiling and pipeshaft

b I

(6) Noinsulationshallbeprovidedforthefollowingpipes,valvesandflanges. (a) Devices and piping 9including drainage pipe on the floor below sink) which are

consideredaccessoriesforsanitarywares. (b) Pipingforwatersupplyanddrainageundergroundorinsideconcrete. (c) Watersupplypipinglaidindoors(excludingthepipingtobe laidinsideceilingsand

highlyhumidareas). (d) Hotwatersupplypipingvalvesandflanges. (e) Outdoorexposeddrainagepiping. (f) Air ventpiping(excluding the portion of100mm from the branch point ofdrainage

pipe). (g) Overflowpipesanddrainpipesforvarioustanksandsimilarequipment.7.4.46.3.5 Painting Work(1) General

Allrespectiveequipmentandmaterials,exceptthefollowing,shallbepainted.Equipmentandmaterials,exceptthoserequiringcorrosionproofpaintingtobeburied.

(2) Painting

Thetypesofpaintsandfrequencyofpaintingofportionstobepaintedshall,inprinciple,beasspecifiedinTable12.7.

7.4.46.3.6 Civil Works

Items other than those specified in the following shall be in accordance with thespecification/sfor“ReinforcedConcreteWorks”

(1) Thepitforpipingunderthegroundshallbesoexcavatedthattherequiredgradient

canbekeptpreciselyandthepipingcanbeconnectedeasily.(2) The foundation and pit for tanks, etc. shall be excavated sufficiently taking into

accountthespaceforassemblyandremovalofforms.Table - 12.7.1 : Types of Paints and Frequency of Painting of Respective Portions (1/2)

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Portionstobepainted Frequencyofpainting Remarks Equipmentandmembers

Conditions PrimerPainting

InterCoating

FaceCoating

Supports,racksandsimilarfittings(Otherthangalvanizedmaterials

Exposed Ready-mixedpaintoraluminumpaint

2 1 1 The primer coatingshall be anti-corrosivepain

Canceled Anti-corrosive

1 - 1

Heat-insulateexterior(cottonandcloth)

Exposed Ready-mixedpaint

1 1 1 The primer coatingshallbesealercoating

Canceled Sealercoat

1 - 1

Hear-insulatedexterior(Glasscloth)

Canceled Syntheticresinemulsionpaint

1 1 1 Aftertheglassclothhasbeen precisely bondedand made sufficientlydry, synthetic resinemulsion paint asstipulatedinJISK5663shallbeused.

Exposed Polyvinylchlorideresinenamel

1 1 1 Aftertheglassclothhasbeen precisely bondedand made sufficientlydry, emulsion puttyshall be applied twiceand after surface finishwith paper file, resinenamelshallbeapplied.

Table - 12.7.2 : Types of Paints and Frequency of Painting of Respective Portions (2/2)

Portionstobepainted Frequencyofpainting Remarks Typesofpaints

Equipment andmembers

Conditions Primerpainting

Intercanting

FaceCoating

Heat-insulateexterior(Galvanizedironplate/board)

Exposed Ready-mixedpaint

1 1 1 The primercoating shall beanti-corrosivepaint

2nd

Coating

Lined steel pipes Exposed Ready- 2 1 1 The primer

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and coated steelpipes includingjoints

mixed coatingshallanti-corrosivepaint.

Canceled Anti-corrosivepaint

1 - 1 Excluding resin-coatingjoints.

7.4.46.4 Test 7.4.46.4.1 Hot Water Storage TankThehydrostatictestshallbecarriedoutfortheinstantaneoustypeelectricwaterheater.Thehydrostatictestpressureshallbe17.4kg/cm2(shortest)7.4.46.4.2 Water Supply Pipes

Thehydrostatictestofwatersupplypipesshallbecarriedoutpriortocoatingworkduringpiping work or prior to shielding and backfilling or after completion of piping. Theminimumpressureretentiontimeshallbe60minutes.

Thetestpressureofpipingbelowelevatedwatertanksshallbetwicethepressureequivalenttothestatichead.

7.4.46.4.3 Drainage Pipes

Thewaterfillingtestofthedrainagepipesshallbecarriedoutpriortocoatingworkduringpiping work or prior shielding and back filling or after completion of piping. The waterpassagetestofsanitarydrainpipesshallbecarriedoutaftersanitarywaresetc.havebeenattached.Theminimumwaterretentiontimeincaseofwaterfillingtestshallbe30minutesormoreandthatincaseofthewaterpassagetestshalle15minutesormore.

7.4.46.4.4 Test of Raw Water

Afterthecompletionofthewaterreceivingtankandwatersuctionpump,thecontractorshalltestthequantityandqualityoftherawwatercollectedformthewell.

The test shall be in accordance with article 4 (Water Quality Standard) of water servicelawofJapan.

Thetestitemsshallbeasfollows:

- Cyanide - Mercury - OrganismMercury - OrganismPhosphorus - Lead - Chromium - Arsenic - Fluorine

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- Cadmium - Nitrogenofnitricacid - Colonbacilli’s

TheresultsofthetestsshallbesubmittedtotheEngineer.7.4.46.4.5 Test of Treated Water

Afterthecompletionofdrinkingwatersystem,thecontractorshalltestthequalityofthetreated water collected from the cocks. The test shall be in accordance with article 4(WaterQualityStandard)ofwaterServiceLawofJapan.

Thetestitemsshallbeasfollows:

- Turgidity - Chromatizitat - Stench - Taste - Potentialofhydrogen - Organicmatter - Nitrogenofammonia - ChlorineIron - Evaporation - Solvablematerial - Totalhardness - Iron - Manganese - Copper - Zinc

TheresultofthetestshallbesubmittedtotheEngineer.7.4.47 Air Conditioning and Ventilation Equipment Work 7.4.47.1 General 7.4.47.1.1 Scope

Thisclausecoverstheperformanceofallairconditioningandventilationequipmentworksinaccordancewiththedrawingsandthesespecifications.

(1) AirConditioningEquipment(2) VentilationEquipment

Thecontractorshallsubmitshopdrawingsoffabricateditemstotheengineerforapproval.The shop drawingsshall clearlyshow the detailsof fabrication, installations, dimensions,sizes, operation, methods of anchoring and any other pertinent details required forsatisfactory installation.Thecontractorshallsubmit theresultof testsatdesignateddatespecified.

7.4.47.1.2 Design Basis of Air Conditioning and Ventilation System

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(1) Outdoor MaximumTemperature 36oC DryBulb MinimumTemperature 28oC Wetbulb MinimumTemperature 12oC Drybulb(2) IndoorTemperature 25oC Drybulb Controlroom 27oC Drybulb Othermrooms(summer) 22oC Drybulb Otherrooms(winter)Humidity 60% Controlroom(Relativehumidity) Otherrooms7.4.47.2 Equipment And Materials

The equipment, materials and accessories as specified herein shall be furnished togetherwithsparepartsforthree(3)yearsnormaloperationexceptasindicateotherwise.

7.4.47.2.1 Package Air Conditioning Units

(1) TheContractorshallfurnishandinstallthepackageairconditioningunitsasshowninthedrawings.Packageairconditioningunitsshallbefactorybuiltandfactorytestedproducts.

(2) Inthiswork,towtypesofpackageairconditioningunitsshallbeinstalled.(3) Airheatsourceheatpumppackageairconditioner.

(a) Type Lightweight,uprightfloorstandingtype.(b) Cabinet Syntheticresinpaintbakedonfinishedplates.(c)Insulation Insulationshallbeinstalledtopreventsweatingandtomufflesound,

usingglasswoolonpolywretenform.(d) Condenser Airsourceheatpumpcondenser.(e)Compressor Compressor (s) shall be serviceable hermetic type equipped with

suitable rubber vibration isolators crank case heaters, liquid linestrainerandsuctionanddischargeshutoffvalues.

(f) AirFilter Permanentwashablepolyvinylchloride.(g) HeatExchanger Multipasscrossfinedtube.(h) Connections Withflarenutorcompanionflangeforfieldpiping.(i) OutdoorFan PropellerFan.(j) Evaporator Multipasscrossfinnedtube

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(k) EvaporatorFan Multi-bradecentrifugalFan AC-1(seedrawings)directdrive AC-2(seedrawings)beltdrive(l) Applicablepowersupplies AC3-phase400V50Hz.(m) Operationswitch 3-position push button types and cooling heating selection switch (Ventilating

operation,coolingoperationorheatingoperation.(n) HighPressureSwitch This switch cuts out the operation of compressor when the discharge pressure

exceedsthesetting.(o) Accessories SpareParts Refrigerant -for1change V.belt -1each

7.4.47.2.2 Fans(1) The Contractor shall furnish and install the fans as shown in the drawings. Fans shall be

factorytestedproducts.(2) The capacities of the fans shall be in accordance with fan schedules as shown. Unless

otherwisedirected,thefansshallconformtothelayoutsasshownthedrawings.(3) All fans shall be statistically and dynamically balanced to avoid vibration and shall have

bladestosecurequietefficientoperation.7.4.47.2.3 Ducts Ductmaterialsshallconformtothefollowings: Galvanizedsteelironsheet ShapeSteel Bolt Nut Gasketforflange 7.4.47.2.4 Refrigerant Pipe Materials and Accessories(1) Thepipesshallbeofcopper.ThematerialshallbeasspecifiedinJISH3603(Phosphorus

deoxidized copper seamless pipes and tubes) and the dimensions shall be as specified inASTMB8858L(Hardmaterials).

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(2) Thejointsshallbemoldedproductsmadefromtheabovematerialsandtheyshallpassthe

manufacturer’s standards. In locations where removal is required, flair or flanged jointsshallbeprovided.

7.4.47.3 Installation Work

7.4.47.3.1 Foundation Work

(a) Foundationshallbeofreinforcedconcreteconstructionandshallbeabletowithstandthe

weight of equipment and external forces by having sufficient bearing face. Moreover, thefoundationshallbeconstructedonfloororgroundhavingsufficientbearingcapacity.

(b) Cement to be used for foundation shall be the standard Portland Portland cement inaccordancewithBDS232(PortlandCement).

(c) Inprinciple,thesizeofaggregateshallbethefollowingvalues

Gravel : 25mmorless GrousedStone : 20mmorless Sand : 2.5mmorless

Provisionsotherthanthosespecifiedaboveshallbe inaccordancewiththespecificationsfor“ReinforcedConcreteWork”

7.4.47.3.2 Installation Work for Equipment(S)

Allequipment’sshallbefirmlysecuredtothefloorsothattheequipmentwillomoveorbedamagedduetoearthquakes,etc.

7.4.47.3.3 Duct Work

(1) TheContractorshallfurnishandinstallallsheetmetalductsforsupply,return,freshairandexhaustsystemsasshowninthedrawings.

(2) DuctsshallbeconstructedtostandardsoutlinedinthelatestHASSGuide.Ductsshallbe

constructedofgalvanizedsteelgaugesasshownTable13.1.

Table - 13.1

Duct Size Metal Gauge Thickness Lessthan450 #26 0.5mm 455~750 #24 0.6mm 755~1500 #22 0.8mm 1501~2250 #20 1.0mm Morethan2260 #18 1.2mm

(3) Thecontractorshallcleanalldirtandrubbishfromtheinteriorandexteriorofallductsandotheraccessoriespriortoerection.

467

(4) A flexible connection shall be made between the fan discharge and the adjoining ductwork.

(5) Low-velocityductsshallbeinstalledasfollows:

Table - 13.2 : Duct Flanges

Bolt Rivet

Thickness Shape Steel

Max. Pitch Dia. Pitch Dia. Pitch

0.5mm 25x25x3 3.6m 8.0mm 100mm 4.5mm 65mm 0.6 25x25x3 3.6 8.0 100 4.5 65 0.8 30x30x3 2.7 8.0 100 4.5 65 1.0 40x40x3 1.8 8.0 100 4.5 65 1.2 40x40x5 1.8 8.0 100 4.5 65

Table - 13.4 : Duct Hangers

Thickness Shape Steel Steel Rod Dia. Max. Pitch 0.5mm 25x25x3 9mm 3.0m

0.6 25x25x3 9 3.0 0.8 30x30x3 9 3.0 1.0 40x40x3 9 3.0 1.2 40x40x5 9 3.0

(6) SpiralDuct

(a) The straight portion of the spiral duct shall be fabricated, using a strip of the

galvanized steel sheet. The nominal size of the spiral duct shall be based on theinsidediameter.Thetoleranceininsidediametershallbe+0~+2mminreferencetothenominalsize.ThethicknessoftheironstripstobeusedshallbeasindicatedinTable13.5.

Table - 13.5 : Thickness of Spiral Duct

AirDuctDiameter(mm) Thickness(GaugeNo.)ofironstrips Below200 0.5mm(#26) Over200,butbelow600 0.6mm(#24) Over600,butbelow800 0.8mm(#22) Over800,butbelow1,000 1.0mm(#20)

The pitch of the side seaming at the straight portion of the spiral duct shall be asindicatedinTable13.6andthefoldingwidthshallbeover6mm.

Table - 13.6 : Side Seaming pitch of spiral Ducts

Air Duct diameter (mm) Seam Pitch (mm)

Below100 Below100 Below1,000 Below150

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(b) Thejointingofonespiralducttoanothershallbepreformedbyapplyingasmanyside seaming as required, using galvanized steel strips or welding as many steelstripsarrangedproperlybetweenspiraljoints.

Thegalvanizedsteelstripsshallbeapplied,inadvance,withrustpreventivepaintonbothinnerandoutersides.

Thenominalsizeofspiralduct jointsshallbebasedontheoutsidediameterof the

spiral duct joints, and the tolerance in nominal size shall be as indicated in Table13.7.

Table - 13.7 : Tolerance in spiral duct Joint Diameter

Nominal Size (mm) Tolerance (mm)

Below600 -1.5-2.5 Over600,butbelow1,00 -2.0-4.0

ThethicknessofthegalvanizedsteelstripstobeusedforthejointbetweenspiralairductsshallbeasindicatedinTable13.8.

Table - 13.8 : Thickness of Galvanized iron Strips and Steel Strips

Nominal Size (mm) Thickness (Gauge No)

Below200 0.6mm(#24) Over200,butbelow600 0.8mm(#22) Over600,butbelow800 1.0mm(#20) Over800,butbelow1,000 1.2mm(#18)

TheoverlappingwidthbetweensteelstripsusedforthespiralductjointshallbeasindicateinTable13.9.

Table : 13.9 : Overlapping width between iron strips or steel strips

Nominal Size (mm) Overlapping Width (mm)

Below125 60 Over125,butbelow300 80 Over300,butbelow1,000 100

(c) Spiralductreinforcement

ThereinforcementforspiralductsshallbeasperTable13.10.

Table : 13.10 : Reinforcement for Spiral ducts

Rivet

AirDuctDiameter(mm) Reinforcinganglesteel

MountingInterval(mm)

Dia.(mm) Pitch(mm)

Over600,butbelow750 30x30x3 Below2,400 4.5 65 Over 750, but below 30x30x3 Below1,800 4.5 65

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1.200 Over1,210 40x40x3 Below1,200 4.5 65

(7) Airductsupport

(a) Thehangersandsupportsfortherectangularairductshallbemadeofshapesteelorgar steel. The shapes and dimensions of the hangers and supports shall be as perTable13.4

(b) ThehangersandthesupportsforthecircularshangershallbeasperTable13.12.

Table - 13.12 : Shape and dimensions of the hangers and supports for the circular air duct

Hanger

Support

Dia. Of circularairduct

Flat steel(mm)

Max. mountinginterval

Flat Steel(mm)

Max. mountingInterval(mm)

Below1,500 25x3 Barsteelwithasizeof 25x3 or 9mmøbarsteel

2,700 25x3 2,700

Over1,500 30x3 Barsteelwithasizeof 30x3 or 12mmøbarsteel

2,700 30x3 2.700

(8) Acanvassheetshallbeusedfortheconnectionbetweentheairductandtheairbloweror

betweentheairductandtheairexhaustersothatthevibrationsfromtheairblowerortheairexhaustermaynotpropagatetoothers.

(9) Wheretheairductisinstallpenetratingthroughawall,athroughpartbothonthewasside

andtheductsideshallbefinishedtoagoodappearance.(10) Thecheckingaccessportshallbesuchaswillallowthecaseofopeningandclosingandas

will permit air leakage. The access port cover shall be made of the galvanized sheet ironhavingthesamethicknessasthatofthesheetironfortheairduct.Particularly,theaccessportcoverata locationwheretheair fromtheairconditionerflowsshallhaveinsulatingmaterialtothethicknessofmorethan25mm.

(11) After, theinstallation,theinterioroftheairductshallbecleanedthoroughlyandcheckif

thereisnointerferenceintheairflow.(12) Outdoorairintakeandexhaustlouver The outdoor intake louver and exhaust louver shall be made of the stainless steel sheet

havingthethicknessofmorethanno.20gauge. Theeffectiveareaofthelouversshallbeover40%,andthoselouvers,whichareinstalledat

suchlocationswheretheyareexposedtoweathers,shallbedesignedandmanufacturedtobeofsuchaconstructionaswillpreventrainwaterfromgettinginside.

(13) Diffusers

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(a) Thediffuserstobeusedshallhaveagoodappearance,andtheyshallbynomeansbeallowedtogeneratenoisesduringsystemoperation.Inaddition,thediffusersshallbedesignedtobecapableofprovidingnormalperformance.

(b) UniversalTypediffuser Themountingframeofthediffusersofthistypeshallbefabricatedwithsteeloriron

platehavingathicknessofmorethan1.0mm,anditshallhavesuchaconstructionastheframecanbemountedtotheairductbymeansofbolts.

Thediffuserbladesshallpermitthecaseofadjustment. The shutter to be employed to the universal type diffuser shall be of the double

accessdoortype. Unlessotherwisespecified,thediffuserofanytypeshallbemadeofgalvanizedsteel

sheetandshallbefinishedwithmelamineresinbakedonthesurfaceofeachdiffuserunit.

(c) The anemodiffusers to be used shall be used shall have sufficient air diffusing

performance and they shall be provide with a damper and an air flow informingdevice.

7.4.47.3.4 Piping (1) Coolingmediumpiping

(a) Theinsidesofthepipesshallbethoroughlycleanedanddriedbeforeuse. After cleaning the ends of the pipes shall be sealed by an appropriate method to

preventanforeignmatterfromenteringduringthepipingwork.(b) Thepipesshallbenormallycutperpendiculartothepipecenter.Thecuttingshallbe

suchthatthepipediameterisnotdecreased.Theoutersurfacesofconnectingpipesand the inner surfaces of joints shall be polished sufficiently with a flux brush, etc.Aftertheoutersurfaceofthepipesiscoatedwithflux,theyshallbecarefullyinsertedinthejointsandfitperfectlywhileheating.

(c) The dischargeand intake gas tubes shall have a minimum downwardgradientofat

least1.200.(d) Thepipingshallbeperformedinconsiderationofexpansionandcontraction.(e) In flanged joints, a packing of a thickness within 1.5 mm as specified in JIS R3453

(Compressedasbestossheet)shallbeused.(f) A by- pass between the pipe diameter and the same diameter shall be provided in

coolingmediumfilters,automaticexpansionvalves,coolingmediumsolenoidvalves,etc.

(g) Thepitchforhoistandsupportfixture’sshallbeasshownintable13.3.4.

Table - 13.13 : Copper Pipe support pitch

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PipesupportpitchNominalDiameter 68121620253240506575100BMax. 1.01.01.01.01.51.51.52.02.52.53.03.0Pitch(m)

(h) Topreventthetransmissionofvibrations,anti-vibrationjoints,andantivibrationhoist

andsupportfixturesshallbeused. 7.4.47.3.5 Insulation Work 7.4.47.3.5.1 Materials(a) The contractor shall furnish and install all insulation materials required for ductwork as

shownintheDrawings.(b) Specificationsforheatinsulationcoverings.

Table - 13.14

Classification of heat insulation covering

Specifications

Heat insulationmaterials

Glass wool heatinsulation

The glass wool heat insulation board shall beshallbeNo.240KstipulatedinJISA9505(GlassWoolHeatInsulationMaterial).

Exteriormaterials Glasscloth The glass clothes shall be the non-alkali plainweaveclothesstipulated inEP21C in JISR3414(Glassclothes)whichhavebeenmade free fromfraying.

Aluminum The glass clothes shall be the flat weave clothesmade of aluminum foil with a thickness of 0.02mmoroverstipulatedinJISH4160(Aluminumand aluminum Alloy foils), to which the plainweaveclothesmadeof13micronglassyarnand200singlefilamentyarnsaccordingtoJISR3414withaunitacrylicresinadhesive.

Table - 13.15

Classification of heat insulation coverings

Specifications

Auxiliary GlassfilamentRivet

The glass filamentmat shall be madeofglass yarn ofmaterials 18 micron of less according to JIS R 3413andhaveaunitmatweightof45gofoverperm2.The

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rivetshallbemadeof thewashermadeofgalvanizedsteelplatetowhichanailwithalengthtobechangeddepending upon the thickness of heat insulationmaterialsisbuiltin,orthecopperplatednailforspotwelding, and have a strength sufficient to bear theinsulationmaterials.

Steelframe Inprinciple,thesteelframeshallbemadeofsteelplatewith a standard plate thickness of 0.4 mm or over asstipulatedinJISG3302(Galvanizedsheets)

Adhesive In principle, the acrylic emulsion adhesive shall beused for bonding of glass clothes, glass filament matandaluminum glass clothes, and the chloroprene rubberadhesiveshallbeusedforbondingofrivet.

(3) Materialsandproceduresdependinguponthetypesofheatinsulationwork.

Classification of insulation work Order of insulation work Insulationofexposedinterior 1.Rivetting 2.Heatinsulationboardwithathicknessof50mm 3.Cornerpatchandseal-up 4.Adhesive

5.Glassclothes

Indoorconcealing 1.Rivet 2.Heatinsulationboardwithathicknessof25mm 3.Cornerpatchandseal-up

4.Adhesive 5.AluminumGlassclothes

Note : The galvanized steel plate with a thickness of 0.2 mm or over shall be used forcorner patch,andtheglassfilamentmatshallbeusedforseal-up.7.4.47.3.5.2 Execution(1) Themutualclearancebetweentherespectiveinsulationshallnotincludethethicknessof

exteriormaterialsorauxiliarymaterials.(2) The mutual clearance between the respective insulation shall as small possible, and no

overlappingjointsshallbeprovidedonthesameline.(3) Inprinciple,tworivetsshallbedrivenintothelowerandsidesurfacesandonerivetinto

theuppersurfaceoftheairductatintervalsof300mmeach.(4) Theportionorairductpenetratingthroughthefloorshallbecoveredwithstainlesssteel

fromthefloorsurfacetoheightofupto150mminordertoprotecttheinsulation(5) The outermost ends of the insulation shall be protected as required depending upon the

materialsandpurposeofheatinsulation.

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(6) Heatinsulationworkforinspectiondoors,etc.ofequipmentrequiringsuchinsulationshallbecarriedoutsoasnottocausehindranceduringopeningandclosingofsuchdoors,etc.nordeteriorationofthesaidheatinsulation.

7.4.47.3.6 Painting Work 7.4.47.3.6.1 General(1) Allequipmentandmaterials,exceptforthefollowing,shallbepainted. (a) Surfacesotherthangalvanizedsurfaces (b) Galvanizedportionswhicharenormallyconcealed(2) Allequipmentandmaterialsrequiringinspectionshallbepaintedafterinspection.7.4.47.3.6.2 Painting The types of paints and frequency of painting of the respective portions shall, inprinciple, be as specified in Clause 11.3.5 Unless specified in this table, such painting shall becarriedoutaccordingtosimilaritemstakingintoaccounttheworkpurposes,materialsandotherconditions.7.4.47.4 Tests 7.4.47.4.1 Piping(1) Therefrigeratorshallpasstheair-tightnessandpressurewithstandtests.(2) Therefrigeratorsshallbetestoperatedinthefactoryandcarefulinvestigationsconcerning

performance,noise,vibrations,etc.shallbeperformed.Afteritisconfirmedthatthetestshavebeenpassed,therefrigeratorshallbeshippedafterapplyingrust-proofpaint.

(3) Afterinstallation,therefrigeratorsshallbetestoperated.(4) After completing of the refrigerant piping, an air-tightness test shall be performed using

carbon dioxide, nitrogen, dry air, etc. After the air-tightness test, the entire system shallunder-gohighvacuumevaporationtoremoveallwater.Afterthisdehydrationtreatment,acoolingmediumleaktestshallbeperformedaccordingtotheinspectionoftheEngineer.

7.4.47.4.2 DuctAfter completing the air duct installation, the air duct system shall have and air blow test in thepresence of the Engineer. Unless otherwise specified, all of equipment, materials and executionshallbeasstipulatedin“IndoorLightingSystem”.7.4.48 Secondary-Electrical Wiring 7.4.48.1 General(1) Thecontractorshallfurnishandinstallthecontrolpanels,switches,receptacles,electrical

conduitpipes,wires,outletboxforsecondarywiringequipmentasshownintheDrawings.

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(2) Motors used in cooling equipment, blowers pumps, etc. shall all be included in this

equipmentwork.(3) Unlessotherwisespecified,thewireconduitandwiringworkintheprimarysideshallall

beperformedasseparateelectricalequipmentwork.However:

(a) Secondary side wire conduit and wiring work for cooling equipment operatingpanelsandbelowshallallbepartoftheworkoftheequipmentconcerned.

(b) Wireconduitandwiringworkrelated to theautomaticcontrolofairconditioning

equipmentshallallbepartoftheworkoftheequipmentconcerned.(c) Insufficientwaterlevelalarmequipmentforwatersupplytanks,etc.shallbeapart

oftheworkoftheequipmentconcerned.(4) Unlessotherwiseindicatedinthisclause,allofequipment,materialsandexecutionshallbe

asstipulatedin“IndoorLighteningPlugandTelephonePipingSystem”7.4.48.2 Equipment And Materials(1) CablesshallbeasshowninTable-14.1.

Table - 14.1(1)

Items CodeNo Type LetterControlcable JISC3401 Polyvinyl ChlorideCVV InsulatedandSheathedcontrol CablesCross-linked JISC3606 Cross-linked Polyethylene CVPolyethylene InsulatedCableCable

(2) TheelectricalequipmentandmaterialsshallmeetthestandardsoftheJapaneseElectrical

manufacturersAssociation(JEM)inadditiontothesespecifications.(3) Motors

(a) Unlessotherwisespecified,ACmotorsshallmeetthespecificationsinTable14.2.

MotorSpecifications JIS4201 Low-Voltage ThreePhaseInductionMotorVoltage 400G Insulationclass E

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(b) Three-phase induction motors shall be those using the starting equipment in Table14.3.asstandard.

Table 14.3

Area

Capacity(kw) Refrigerating

equipment Blowers

Motor Startingsystem Motor Startingsystem

37ormore Highvoltagewoundtype

Resister Highvoltagewoundtype

Resister

15~37 Lowvoltagespecial

Y-A Lowvoltagespecialsquirrel

Y-A

11~15 Lowvoltagespecialsquirrel

Y-A Lowvoltagespecialsquirrel

Y-A

5.5~7.4 Lowvoltagespecialsquirrel

Directstarting Lowvoltagespecialsquirrel

Directstarting

37orless Lowvoltagenormaltype

Directstarting Lowvoltagenormaltype

Directstarting

7.4.48.3 Test

Uponcompletionofthework,thewholesystemshallbeprovedacceptablebyinspectionscarriedoutbytheEngineer.

7.4.49 Lighting, Plug and Telephone Piping System Principle of Lighting

Theessentialfeaturesofanefficientlightingsystemare:

- visual comfort through adequate illumination of the working surface, prevention of

glare,andavoidanceofshadows,

- easeofmaintenance.

Thedesignofalightingsystemshallinvolve:

a) carefulplanningofthebrightnessandcolourpatternwithinboththeworkingareasand

thesurroundingsso thatattention isdrawnnaturally to the importantareas,detail is

seenquicklyandaccurately,andtheroomisfreefromanysenseofgloomormonotony,

b) useofdirectionallightingtoassistperceptionoftaskdetail,

c) controllingdirectandreflectedglarefromlightsourcestoeliminatevisualdiscomfort,

d) minimizing flicker from certain types of lamps and paying attention to the colour

renderingpropertiesofthelight,

e) the correlation of lighting throughout the building to prevent excessive differences

betweenadjacentareas,soastoreducetheriskofaccidents,and

f) theinstallationofemergencylightingsystems,wherenecessary.

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7.4.49.1 Scope of Work

ConcealedElectricalwiringbyEastern/BRBcableorequivalent EuropeanMadeMKtypeGangswitch,socketMCBetc ProvisionforInternetfacilitiessystem,Telephone&Intercomwiring. SufficientEarthlingsfacilities. TobeusedLEDLight.

Thescopeofworkunderthecontractincludessupplyandinstallationoflightingfixtures,lightingpanel,switches, receptacles,electricalconduitpipes,wires,outletboxes for telephones, internet,dishcableandothernecessaryaccessoriesfortheindoorlightingsystem.7.4.49.2 Design Conditions 7.4.49.2.1 Illumination Level 1) TheilluminationlevelsforeachroomshallbeasshowninTable-15.2.1.

Table - 15.2.1

Name of Room Normal condition Emergency condition Control 500lx 50lx Office 300lx 10lx Relay 300lx 10lx PLC/SCADA 500lx 50lx Conference 300lx 10lx Battery 100lx 5lx RectifierSet 100lx 5lx Corridor 100lx 5lx PumpControl 100lx 5lx CableControl 50lx 5lx B/G 200lx 5lx Lavatory 100lx - Kettle 100lx -

(2) SettingHeight (a) Lightingfixtures RefertoDesignDrawings. (b) Switches 1.25metersabovethefloorlevel,unlessotherwisespecified. (c) Receptacles 0.3metersabovethefloorlevel,unlessotherwisespecified.(3) Powersourcevoltage

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(a) Forlightingpanel AC3phase4wires415/230V50Hz DC2Wires110V (b) Fornormallighting,convenientoutletandventilationequipment. AC1phase2wires220V50Hz (c) Foremergencylighting DC2Wires110V7.4.49.3 System Description(1) AC,DCSourceandearthlingshallbesuppliedfromtheprimaryside.(2) StandardLEDLampsshallbeprovidedforthecontrolroomandallmiscellaneousrooms,

andshallbedesignedtobemanuallyactivatedbymeansoftheswitchesattheentranceofeachroom.Thelampsinthecorridor,Toiletroom,officeandallelectricalroomsshallbesensorbasedwhichwillautomaticallyswitched“ON”andoff.

(3) LEDLamp/Incandescentlampsshallbeprovidedinallpartsofthecontrolbuildingtoserveas emergency lighting. The lamps in the control room, corridor, office and all electricalroomsshallbeautomaticallyswitched“ON”incaseofACfailure.

(4) Outlet boxes for telephones shall be provided for the control room, together with piping

from the outlet boxes to the cable tray in the cable control room. The sitting of thetelephonesandwiringshallbeincludedintheelectricalscopeofworkofLotIV.

(5) Exitsignlight Theexitsignlightsshallbemountedabovetheallexitsofthecontrolbuilding.(6) Spareparts,asindicatedbelow,willbesuppliedforthree(3)yearsnormaloperation.7.4.49.4 Equipment’s and Materials 7.4.49.4.1 Wires WiresshallbeasshownintheTable15.4.1

Table - 15.4.1 Item Code No. TypeLetterVinylwireJISC3307 600GradePolyvinyl IV ChlorideInsulatedWiresHeat-resistant JISC3317 Heat-resistantvinyl HIV Insulatedwire

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HIVwiresshallbeusedintheDCcircuit.7.4.49.4.2 Wire ConnectorsWireconnectorsforindoorwiringshallbeinaccordancewithJISC2810orequivalentBDS7.4.49.4.3 Metal Conduit and FittingsMetalconduitandfittingsshallbeinaccordancewiththeTable15.4.3,andtheconduitshallbeofheavygaugetype.

Table 15.4.3 Item Code No. Designation Conduit JISC8305 Rigid metalConduit (heavygauge)Coupling JISC8330 Coupling forRigidMetalConduitNormalBend JIS C8330 ElbowsforRigidMetalconduitBushing JISC8331 BushingforRigidmetalConduitLocknut JISC8333 Locknuts forRigidMetalConduitSaddle JISC8334 SaddlesforRigidMetalConduitUniversal JISC8335 Universal Fittings for Rigid metal

Conduit

OutletBox JISC8337 Out Boxes forRigidmetalConduitSwitchBox JISC8337 Switch Boxes forRigidMetalConduitConcreteBox JISC8338 Concrete Boxes forRigidMetalConduitBoxCover JISC8339 Box covers forRigidMetalConduitInsulatedBushing JISC8347 Insulated Bushing for

rigidMetalConduit

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7.4.49.4.4 Pull BoxesPullboxesshallbemadeofsteelandcoatedwithprotectivepaint,andwhereverexposedtoview,shallbecoatedwithafinishpaintofacolorapprovalbytheEngineer. 7.4.49.4.5 Wiring DevicesWiringdevicesshallbeinaccordancewiththeTable-15.4.5

Table-15.4.6

Items CodeNo. DesignationFluorescentLamp JISC7601 Fluorescent Lamps for GeneralLightingServiceRapidStartJISC7602 Instantaneous Start Hot cathode Discharge

Fluorescent Lamps(40Wtype)

GlowStarterJISC7607 GlowstartersforfluorescentLamps(Lessthan40

Wtype

Fluorescentfixture JISC8106 Lighting Fitting for FluorescentLamps ballastsforFluorescentlampsIncandescentlamp JISC7501 Double Filament Lamps forGeneralUse

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7.4.49.4.6 Lighting Fixtures(a) InPrincipleshapesanddimensionsshallbeinaccordancewiththeDrawings.Catalogsand

shopdrawingsshallbesubmittedtotheEngineerforapproval.(b) Lighting fixtures for emergency use shall be as specified by BCJ (Articles rated by the

BuildingCenterofJapan),orapprovedequal. 7.4.49.4.7 Lighting Panel Shapes, electrical characteristics, types capacities of circuit breakers, and the system ofoperationshallbeinaccordancewiththeDrawings. Thepanelshallmadeofsteelplatewithathicknessofmorethan1.6mm(body)and2.3mm(door)respectively. The finish shall be painted with a color approved by the Engineer. Catalogs and shopdrawingsshallbesubmittedtotheEngineerforapproval.7.4.49.4.8 Over Current ProtectorsMoldedcasecircuitbreakersandresidualcurrentprotectivedevicesshallbeofEuropeanStandardusedinthelightingpanel7.4.49.5 Indoor Wiring 7.4.49.5.1 Rigid Metal Conduit(1) Installation

(a) Imbeddingorconduitlayingshallbesomadethatthestrengthandstructureofthebuildingisnotaffected.

(b) Cutendsofconduitshallbeneatlyandsmoothly finishedby instrumentsuchasa

reamer.

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(c) Conduitshallbebentataradiusofmorethansix(6)timestheinternaldiameteroftheconduitconduitrunningbetweenoutletsandpullingboxesshallnothavemorethantheequivalentoffour90obends.

(d) Apullboxorjunctionboxshallbeinstalledtoprotectconduitexceeding30meters

inlengthandatthepointsrequired.(e) In general, a switch or outlet box shall be used at all points where a switch,

receptacle(socket)orlightingfixtureistobeprovided.(f) Where low voltage metal conduit is enclose in proximity to or crosses

communication wiring,metallicwater pipeor gaspipe, the workshall be so donethatdirectcontactisavoided.

(2) Connectionofconduits

Conduitand fittingsshallbeperfectlyconnected,bothphysicallyandelectrically,andtheconductorresistanceshallbepreferablydeptwithin2ohmsbetweengroundingconductorandtheendmetalconduit.

(3) PullBoxesandJunctionBoxes

(a) Shapeandtypeoftheseboxesshallsuittheplaceofinstallationandasteelplateormorethan1.2mminthicknessshallbeused.

(b) Boxes shall have adequate dimensions well matching the number or conduits

connectedandtheconditionofconnectingorpullingwires.(c) Wheretheboxiscoveredorconcealedinstructuralmaterial,accesstotheboxshall

bemadepossibletofacilitateinspection.(4) Installationoffeederconduits

(a) Exposedmainconduitshall,inprinciple,runparallelwithwallorceiling.(b) Metalssupportsforconduitinconcretebuildingshallhaveaproperfixinginsertor

boltpreviouslyembeddedintheconcrete.(c) Spacing between metal inserts or bolts to support conduit shall in principle, be

approximately2meters.(5) Painting,ProtectionandcleaningofConduit

(a) Wheretheplatedorpaintedsurfaceofconduit,metalsupportorboxhaspeeledoff,itshallbetouchedupwithprotectivepaint.

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(b) Conduitshallbesufficientlyprotectedagainstentryofmoisture,water,dustetc.and

thecutendofconduitshallbebushbecapped,woodpluggedorcoveredwithrag,etc.Wheneverconcreteworkisinprogress.

(c) Conduitandboxesshallbewellcleanedandtheconductivitycheckedafterremoval

oftheforms.

(6) WirePulling

(a) Connection of wire shall not be made inside metal conduit. Connection shall bemadeinmetalbox,junctionboxordistributionboard.

(b) Wire shall be pulled through conduit after the inside of conduit has been cleaned

and when each of conduit has been capped with bushing. Cleaning shall beperformed in such a manner that walls, ceilings, etc. around the conduit are notstainedorspoiledinanyway.

(c) Inallcases,allwiresstemmingfromonecircuitshallbeaccommodatedinthesame

conduit for A.C circuit work, except where a balanced condition is electro-magneticallyattainedbyaccommodatingbothlinesofthesamepolaritywithinthesameconduit.

7.4.49.6 Installations 7.4.49.6.1 Installation of Lighting Fixtures(a) Heavylightingfixturesshallbefirmlysupportedusinginserts,studsorbolts,attachments

andifnecessaryshallbeprovidedwithameanstopreventswingingbyusingwoodscrew,etc.

(b) Lightingfixturesshallbeinstalledhorizontallyorverticallyinaworkmanlikemannerand

shallbesolocatedastonotinterferewithinspectionofrelatedequipment.7.4.49.6.2 Installation of Lighting PanelLightingpanelshallbe installedfirmlyonwallsorothersurfacesinaworkmanlikemanner,andshallbesolocatedastonotinterferewithinspectionofrelatedequipment.

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7.4.49.6.3 TestAperformancetestshallbemadebemadeafterinstallationofequipmenthasbeencompleted.7.4.49.7 Grounding 7.4.49.7.1 Grounding ResistanceGroundingresistanceshallbe10ohmsonless,unlessotherwisespecified.7.4.49.7.2 Electrical Works to Be GroundedExceptforspecificinstances,allelectricalthattherespectivegroundingresistancevaluesarekeptatspecifiedvaluesthroughouttheyeardespiteseasonalchanges.(a) Nogroundingisrequiredforsteelbase,metalboxandsteelframeofequipmentisoperated

onlessthanAC150V(Voltagetoground)andisinstalledatadrylocation.(b) Metalconduitandmetalaccessories(c) Metal enclosure accommodating the discharge lamp ballast and the metal parts or a

discharge lamp lighting fixture, except where grounding is required and/or when sodirectedbyEngineer,shallbegrounded.

7.4.49.7.3 Sign, Signal & Annotation: ●IntegratedDesignofDifferentkindofIndicatorslike-AcrylicSignBoard,LEDSignBoard,NeonSignBoard,ReceptionSignBoard,SafetySign,PVCLetters,GlowSignBoard,CustomizedDisplay Boards,OverheadSignage,MetalNameplates,CommercialSignBoards,OutdoorSigns,ElectronicSignBoardsetc.shouldbeprovidedinthedesign&construction.●DigitalLEDSignboardwiththefeaturesofexcellentvisibility(evenindaylight);Goodqualityatreasonablepriceandlightweight;Simpleinstallation,Safetotouchandclean;Changingcolorforattractingattention;Extremelylowpowerconsumption.●ShouldbeprovidedtheAccessorieslikeAdaptorandchainsetc.LEDdisplayscreenshallbeminimum1.0squaremeter.ShallbeCompatiblewithIP65.ShallbeinstalledatthefrontsidewallofthebuildingEnvironmentallyfriendlydisplayitensureslowerpowerconsumptionandlongerlifetime.