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7/27/2019 Earth Work by Mech

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IS 1200 ( Pa:3 27 ) : 1992

METHOD OF MEASUREMENT OF BUILDINGANDCTVIL ENGTNEERTNG WORKSPART 27 EARTH WORIC DONE BY MECHANICAL APPLIANCES

( Second Reprinl AUGUST 1997 )

UDC 69'003.12 24.13

@ BI S 1992BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC3

NEW DELHI 110002

March I 992 PriceGroop

( Reaffirmed 1997 )


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Methads of Measurement of Works of Civil Engineering ( Excluding River Valley Projects ) SectionalCommittee. CED 94

FOREWORDThis Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by theMethods of Measurement of Works of Civil Engineering ( Excluding River Valley Projects ) SectionalCommittee had been approved by the Civil Engineering Division Council.Measurement occupies a very important place in the planning and execution of any civil engineeringwork from the time of f;rst estimates to the final completion and settlement of payment in the project.Methods followed for measurements are not uniform and considerable diflerence exists between thepractices follo\r cd by one construction agency and the State Government Departments. While it isrecognised th:\t each system of measurment has to be specifcally related to the administratl.:e andfinancial organiz:itions within the Department responsible for the work unification of the varioussystems at technic:4 level has been accepted as very desirable specially as it permits wider sectionof operation civil engineering contractors and elimmates ambiguties arising out of inadequate under-standing of various system followed.Measurement of earth work basically related to the manual method of excavation, carriage and fillingis covered in Part 1. With the advent of machinery for this operation, many lacunae in themethodology for the measurement have become apparent and thus necessity has been felt to formulaten rlX..nrn+.3-f .nA_,,l CA,,.n..,.....fi___ + ,.c ,.,._*l_ .__I. I_.. -r_L--I-~l ___l. _._-..LJLplLL JL1IIIU 1 IllLXlbLJ1Glll~llL1 t;illlll M,K uy Jll~cIlaIllcal app11ances.For the purpose of deciding whether a particular requirement of this standard is complied with, thefinal value, observed or calculated, expressing the result of measurement, shall be rounded off inaccordance with IS 2:1960 Rules fo rounding off numerical values C ev i sed ). The number ofsignificant places retained in the rounded off value should be the same as that of the specified value inthis standard.


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I ndian StandardMETHOD OF MEASUREMENT

IS 1200 ( Part 27 ) : 1992

OF BUILDINGANDCIVIL ENGINEERING WORKSPART 27 EARTH WORK DONE BY MECHANICAL APPLIANCES

1 SCOPE1.1 This standard ( Part 27 ) covers the methodof measurement of earthwork carried out bymechanical means in building and civil engineeringworks.1.2 The machines employed for earthwork may betractors, dozers, scrapers, graders, shovel loaders,drag lines dumpers and other like.2 GENERAL RULES2.1 Clubbing of ItemsItems may be clubbed together provided the breakup of clubbed items are based on the detaileddescription of items stated in the standard.2.2 Booking of DimensionsIn booking of dimensions the order shall be con-sistent and generally in the sequence of length,breadth or width and height or depth or thickness.2.3 MeasurementAll works shall be measured net in decimal sys-tem as fixed in position as givea below:

a) Each dimensions shall be measured to thenearest 001 m where any dimension ismore than 25 m it shall be measurednearest to Olm,b) Areas shall be worked out to the nearest001 m, andc) Cubical contents shall be worked out to thenearest 00 1m.

2.4 Work executed in the following conditionsshall be measured separately:a) work in or under water,b) Work in or under foul position,c) Work under tides, andd) work under snow.

2.5 The bill of quantities shall fully describe thematerial workmanship and accurately representthe work to the executed.2.6 The description of items shall include loadingand unloading.2.7 The following work shall not be measured

separately and allowance for the same shall bedeemed to have been made in the description ofitem:a) Setting out of work, profiles etc,b) Site clearance, such as, cleaning grass andvegetation,C) Unauthorized battering or benching ofexcavation,d) Excavation for insertion of planting orstrutting,e) Unless otherwise specified removing slipsor falls in excavation,f) Bailing out or pumping out of water inexcavation from rains,g) Bailing out or pumping out of water whenmeasured under ground, andh) Slinging pipes electric cables, etc, metduring excavation.

3 CLASSIFICATION OF SOlLS3.1 The earth work shall be classified under thefollowing categories and measured separately foreach category.3.1.1 SoilIt includes various types of soils, mud concretebelow the ground level. Shingle and river ornallah bed boulders soling of road, paths andhard core, mecadam surface of any description,lime concrete, stone masonry below the groundlevel, soft conglomerate and laterite when the stonecan be detached from the matrix with picks andshovel.3.1.2 MuttA mixture of soil and water in fluid or weak solidstate.3.1.3 Foul ConditionMeans a mixture of soil and sewerage or nightsoil.3.1.4 RockThis may be quaried and spiit with mechanicalimplements and includes lime stone, cementconcrete, plain, reinforced and prestressed, belowthe ground level. If it require. blasting may beresorted to for measuring the material.

1


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IS 1200 ( Part 27 ) : 19923.1.5 Hard RockHard rock can be excavated by machines andrequires blasting chiselling in edging or in another,.--,.A ,&,A f-L.,- l.,,A r#...t :, L,,p..~A :+aljlcGu III~l.LlU.VllbG lUl,U rvL,r%1s LIJLGIGU,ccan be considered as ordinary rock.4 METHOD OF MEASUREMENT4.1 The measurement of earthwork shall be donein cubic meters unless otherwise mentioned.4.2 The measurefient to be taken with staff andlevel. The level shall be recorded to correct to5 mm and depth of cuttings and heights of levelscalculated correct to 5 mm. Cubical contents shallbe done to the nearest place.of decimals in cubicme&s. Where ordinary rock and soil is mixed,the measurement of the excavation shall be recor-ded for the entire excavation. Excavated materialof ordinary rock shall be stacked, separatelymeasured and reduced by 50 percent to allow forvoids to arrive at quantity payable under ordinaryrock. The difference between the entire excavationand dome of the quantity payable under ordinaryrock shall be payable as excavation in ordinarysoil.4.3 Where it is not possible or convenient to takemeasures from borrow pits or cuttings volume ofwork done shall be worked out from filling. Theactual measurement of the fill shall be calculatedafter taking the levels of the original grounds be-fore start of the work after site clearance andafter compaction of fill at the desired densitywhich should be specified in advance.4.4 Embankment4.4.1 Forming embankments and Ming shall bemeasured in cubic metres and shall include for-mation of slope. When the material is to be depo-sited in layers this shall be described statingthickness of such layer. The method of consolida-tion shall be described. The measurements shall

be taken in successive stages of 1.5 m statingcommencing level.4.4.2 Backfilling done by mechnical means shouldbe caicuiated by deducting the voiume of structurebelow the underground from the originalmeasuredvolume of excavation done.4.5 Lead4.5.1 The lead for fiilling and removal shall bemeasured over the specified route or over theshortest practicable route to be traversed bymachinery. The leads exceeding 500 m should bemeasured in units of 500 m. Where the leadexceeds 5 km it shall be measured in units of 1 km.Half km and above should be reckoned as one andless than half km ignored.45.2 Travelling distance by reasonable path fromcentre of gravity of the excavated pond to centreof gravity of the dumping ground be taken as lead.4.6 Spoil heap when it has become consolidateddue to passage of time or otherwise shall be sostated and measured separately.4.7 LiftsIn eartb w ark done by mechanical means, lift shallnot be measured separately.4.8 The planking and strutting required to upholdthe face of excavated earth shall be measured insquare metre of face supported. The descriptionshall include use and wastage of all works includingwaste struts boards inciusive ~8 fixing and removai.Planking and strutting required to be left perma-nently in position shall be measured separately.4.9 Removing Trees4.9.1 -frees exeeding 30 cm in girth measured atone metre above ground level shall be premeasuredby numbers and shall deem to include removaland depositing within 50 m.


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Bureau of Indian StandardsBIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.CopyrightBIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofim.pIernenting the ctnndnrd nf ncxp-ssq deta& such as nvmbols and sizes, type or grade desienations.--------, -- -, ---- --- _~~~~~~~~...~~Enquiries relating to copyright be addressed to the Director (Publication), BIS.Review of Indian StandardsAmendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issueof BIS Handbook and Standards Monthly Additions.This Indian Standard has been developed from Dot: No. CED 44 ( 46 14 )

Amendments Issued Since PublicationAmend No. Date of Issue Text Affected

Headquarters:BUREAU OF INDIAN STANDARDS

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 Telegrams: ManaksansthaTolKXr\h~..nO. 31 n1 21 73127 7c 1310 n3 /C,.--.._ l \ ,.11 FF:,,,\IbIbpuUbJ. JLJ I JI, JLJ JJ ,J) 2/22 7-v VA \~IIIIIILI L it,, LLKt;3,Regional Offices: TelephoneCentral : Manak Bhavan, 9 Bahadur Shah Zafar Marg

NEW DELHI 110002Eastern :

Northern :

l/14 C.I.T. Scheme VII M, V.I.P. Road, ManiktolaCALCUTTA 700054SC0 335-336, Sector 34-A, CHANDIGARH 160022

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323 76 17,323 38 41337 84 99,337 85 61337 86 26,337 9120

60 38 4360 20 25

235 02 16,235 04 42235 15 19,235 23 15832 92 95,832 78 58832 78 91,832 78 92

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