method statement for cable tray & trunking

8/13/2019 Method Statement for Cable Tray & Trunking

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*CLIENT NAME HEREDoc No.

* PROJECT NAME HERE Date:REV.

METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 1 of 21

METHOD STATEMENT FOR INSTALLATION OF

CABLE TRAY/TRUNKING/LADDER

Project :

Cotractor :

Doc!"et No. :

Doc!"et re#$%$o %tat!% :

& I%%!e' for Re#$e( ) Co""et%

Re#. Date De%cr$t$oPreare' +, C-ece' +, Aro#e' +,


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REVI/ION CONTROL /HEET

REV. NO. DATE PAGE NO. DE/CRIPTION

& 0IR/T I//E


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : of 21

TABLE OF CONTENTS

1 Purpose.. 4

2 Scope of Work.. 4

3 Responsible Personnel on Site 4

4 Storage.. 4

5 Pre-Installation 5

6 Installation 5

Reference !ocu"ents. 6

# Safet$ 6


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1. Purpose

T-$% "et-o' of %tate"et co#er% t-e o4%$te $%ta55at$o of Ca+5e Tra,%6 Tr!$g )Ca+5e La''er% a% 'ef$e' $ t-e Geera5 /ec$f$cat$o.

2. Sope o! "or#s

T-$% roce'!re ($55 'ef$e t-e "et-o' to +e !%e' to e%!re t-at ca+5e tra,%6 tr!$g) 5a''er% $%ta55at$o% are correct a' acceta+5e a' %-a55 cofor" to t-e CotractDoc!"et% a' /ec$f$cat$o.

$. Respo%s&'(e Perso%%e( o% S&)e

.1. Co%tr!ct$o Maager.2. E5ectr$ca5 0$e5' Eg$eer%.. /afet, Off$cer

.3. 7A87C Eg$eer.9. E5ectr$ca5 /!er#$%or%

*. S)or+,e

3.1 Ca+5e Tra,%6 Tr!$g a' La''er% %-a55 +e roer5, %!orte' a' %tace' o a f5at%!rface.

3.2 Ca+5e Tra,%6 Tr!$g a' La''er% %-a55 +e rotecte' fro" %!5$g-t a' "o$%t!re +,

co#er$g t-e" ($t- tara!5$.

3. Ca+5e Tra,%6 Tr!$g a' La''er% %-a55 +e %tace' roer5, $ eat a' or'er5,"aer.

3.3 Ca+5e Tra,%6 Tr!$g a' La''er% %-a55 +e %tore' a' %tace' $ 'r, area a' %-a55 +eroer5, rotecte'..


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-. PreI%s)+((+)&o%

9.1 A55 "ater$a5% a' 'oc!"etat$o re5e#at to t-$% art$c!5ar /ect$o of (or% ($55 +ec-ece' +, t-e Co%tr!ct$o Deart"et r$or to t-e co""ece"et of (or% e%!r$gt-at t-e%e are correct t,e a% re#$e(e'.

9.2 efore a, er"aet (or% ($55 rocee'6 re4$%ect$o o a55 "ater$a5%6 too5% a'acce%% for $%ta55at$o to +e carr$e' o!t.

. I%s)+((+)&o%

;.1 E%ta+5$%- t-e Ca+5e Tra,%6 Tr!$g a' La''er ro!te o %5a+ %off$t a' (a55%6 a'"ar ($t- c-a5 5$er. E%!re t-at t-e ro!te cofor" ($t- t-e 5ate%t coor'$ate' %er#$ce%'ra($g%.

;.2 Mar t-e 5ocat$o% of %!ort%. 0or -or$


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : ; of 21

;.@ A "$$"!" c5ear %ace of 29"" %-a55 +e et +e-$' a55 $%ta55e' r!% of ca+5e tra,%.>-ere $ a ca+5e tra,% carr,$g o(er ca+5e% r! $ ara55e5 ($t- 5o( c!rret ca+5etra,%6 a &&"" "$$"!" c5ear '$%tace %-a55 +e et t-ro!g-o!t t-e $%ta55at$o.

;. Ra$%e ReB!e%t for I%ect$o for t-e Ca+5e Tra,%6 Tr!$g a' La''er% I%ta55at$o.

0. Re!ere%e Doue%)s

?.1 Aro#e' E5ectr$ca5 /-o Dra($g% ?.2 Aro#e' Mater$a5 /!+"$tta5%

?. Aro#e' Mater$a5 I%ect$o Reort ?.3 Aro#e' /afet, P5a ?.9 Aro#e' 7A87C I%ect$o ) Te%t P5a.

. S+!e)3

@.1 A55 %afet, reca!t$o% %-a55 +e fo55o(e' a% er aro#e' %afet, 5a ) roce'!re.E%!re a55 $#o5#e' er%o% are a(are of t-e %a"e.

@.2 /afet, Off$cer to e%!re t-at a55 (or$g f5at for"% %-a55 +e %afe a' $ goo'co'$t$o.

@. Tra'e%"a %-a55 e%!re t-at +efore 5ea#$g t-e$r (or$g 5ace%6 $t "!%t +e c5ea6t$', a' free fro" r!++$%-.

444444444444444444444444 Proce'!re E'4444444444444444444444


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : ? of 21

Socket outlets and switch installation

The following materials can be used as a performance specification for installation of socket outlets and switches in

multi-storey office buildings. I will also add some pictures of actual installations of these devices in future, and may

be also some drawings and diagrams. Come back and check out this post every few weeks.

Photo !A switch center at a small meeting room

UPDATE March 16, 2011:"s part of the re-construction process of this blog, I will gradually upload

photographs of real installations of electrical works.

The photos will be attached to the relevant e#isting posts when that is possible.

If the original article is in the form of specifications like the one below, having pictures and images in the middle of

it may spoil the structure of the article. In that case I may send a new post to load the photographs.

Then I will create a hyperlink in the e#isting post to connect to the new post and the photos.

$f course the new post will also be hyperlinked back to the original post so the readers will not lose their way trying

to come back to the article he%she was previously reading.

The uploading takes time and I will do it gradually. In the process, the article will look half-completed and

definitely not nice-looking.
http://2.bp.blogspot.com/-v5nQ7O1eUr8/TYDnaFvXCpI/AAAAAAAAA8M/6W-1545mFH8/s1600/Photo%2B1%2B-%2BSwitch%2BCenter%2Bat%2BMeeting%2BRoom.jpg


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : @ of 21

&owever, I set up this blog to give readers contents. 'ots of contents. If you are looking for a nice-looking blog, this

is definitely not a right place.

". (eneral

) *escription

To manufacture, test, deliver to site, install and commission the switches and switched socket outlets in accordance

with the drawings and contract documents.

+) Scope of work

a) Switches and weatherproof switches

b) (rid switch system

c) Switched socket outlets " flush mounted switched socket outlets " metalclad switched socket outlets / a

switched socket outlets weatherproof switched socket outlets.

) *eliverables

a) Tender stage ! Technical data and product catalogues for switches switch socket outlets commando plug%

combination plug% socket isolators 0ireman switch

b) Construction stage ! Catalogues and samples of switches, switched socket outlets, commando plug, isolator and

fireman switch.

c) Inspection and acceptance test

i) Type test and routine test reports

ii) "cceptance test report

iii) Packaging, transportation and storage notes

d) Site installation

i) Installation methods % 1ork 2ethod Statement prior to commencement of work


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : of 21

ii) Pre-commissioning tests

iii) Pre-commissioning test records before commissioning

e) Inspection and commissioning test

i) Site test reports before commissioning tests

ii) Commissioning test reports after testing

iii) $peration and 2aintenance 3$ 4 2) manual

iv) "s-built drawings in "utoC"* format 3soft copy)

5) 6uality "ssurance

a) 7#cept as modified by governing codes and by the contract documents, the contractor is re8uired to comply with

the latest applicable provisions and latest recommendations of the following

i) I7C 9::;-+ Plugs, socket outlets and couplers for industrial purposes

ii) I7C 9:/+; *egrees of protection provided by enclosures 3IP code)

iii) I7C 9:99;- Switches for household and similar fi#ed electrical installations

iv) I7C 9:;5


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 1& of 21

#) =S /


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vi) "n earthing terminal connected to the earth continuity terminal shall be provided and connected to the

protective conductor at every lighting switch position.

vii) Single-pole switches shall be connected to break the phase wire of the supply, while the neutral wire shall not be

run through the switch bo#es.

viii) 1here a group of switches from the same source of supply are to be installed at the same location, the

Contractor may propose a grid switch system subBect to the approval of the 7mployer@s ?epresentative.

i#) "ll switches supplied shall comply to 2S 99, =S 9


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power supply shall be white faceplate with red colored rocker and complete with a pilot lamp.

vii) The faceplate color, type and other decorative considerations of the switched socket outlets at office areas, lift

lobbies and other public areas shall be selected by the I* Consultant % "rchitect.

viii) Switches and switched socket outlets, where mounted in the same area, shall have consistent profile and

thickness.

i#) "llweatherproof socket outletsand plugs shall have the IP rating of IP9/.

d) 0ireman Switches

i) "ll fireman switches shall have die-cast aluminium, IP9/ weatherproof enclosures and are designed to comply

with I7C 9:/+;.

ii) Switches shall be type tested to I7C 9:;5


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the type tests, type test reports certified by acceptable testing authorities may be submitted for approval of the

7mployer@s ?epresentative.

ii) ?outine tests ! =efore the products leave the manufacturer@s works, the manufacturer shall carry out the

relevant routine tests on the total assembly and on parts thereof when delivered with time intervals. The results

shall be recorded in a test report.

iii) "cceptance test at 2anufacturer@s 1orks ! "cceptance tests shall be carried out on the completely assembled

unit. The manufacturer@s tests shall be witnessed ad verified by the 7mployer@s ?epresentative or his

representative.

iv) Site tests

) "t the completion of the installation, all switches and switched socket outlets shall be tested. " report recording

each item of the testing shall be submitted to the 7mployer@s ?epresentative.

. isual Inspection

a) Check that mounting heights are consistent and in accordance with the Specifications.

b) Check for any defects and poor installation.

c) Polarity checks.

.+ Tests

a) $peration of safety shutters

b) $peration of $E% $00 switch

c) Connection and termination of 'ive, Eeutral and 7arth cables.

b) $peration and maintenance 3$ 4 2) manual and trainings

c) &anding over and 7mployer@s "cceptance

Eote This anchor post, 0ree electric installation pictures , may contain a summary of the materials you are looking
http://electricalinstallationblog.blogspot.com/2010/01/free-electric-installation-picture.htmlhttp://electricalinstallationblog.blogspot.com/2010/01/free-electric-installation-picture.html


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2. I%ta55at$o %!er#$%or ($55 $%tr!ct tra'e%"e regar'$g t-e e=ec!t$o of t-e (or% a' ($55 '$%tr$+!te a55

ece%%ar, aro#e' co%tr!ct$o 'ra($g% of t-e 5ate%t re#$%$o.

. T-e %!er#$%or ($55 a5%o c-ec t-at too5% a' eB!$"et a#a$5a+5e are $ co"5$ace ($t- cotract

reB!$re"et%.

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a% $'$cate' o t-e aro#e' co%tr!ct$o 'ra($g%.

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1;. Ca+5e 5a''er 'ef5ect$o %-a55 ot e=cee' 181&& of t-e %a at t-e "$'4o$t of t-e cetre %a of a 1.9 %a

cot$!o!% +ea" after ca+5e $%ta55at$o. It ($55 co"5, ($t- t-e "a!fact!rer reco""e'at$o.

. CABLE INSTALLATION

La,o!t a' "et-o' of $%ta55at$o ($55 +e a% %-o( o t-e aro#e' co%tr!ct$o 'ra($g.

I art$c!5ar t-e fo55o($g ($55 +e a'-ere' to: a Ma=$"!" a55o(a+5e !55$g te%$o %-a55 ot +e

e=cee'e'. + M$$"!" +e'$g ra'$$ %-a55 +e a'-ere' to a% er %ec$f$cat$o%8"a!fact!rer%

reco""e'at$o%. c Ro55er% ($55 +e !%e' at $ter#a5% to re#et 'ragg$g t-e ca+5e% '!r$g t-e ca+5e $%ta55at$o

o ca+5e tra, or 5a''er rac. C!r#e ro55er% ($55 +e %ett5e' at t-e roer o%$t$o $ or'er to ee t-e ca+5e ($t-$

%!$ta+5e +e'$g ra'$!% for !55$g ca+5e aro!' c!r#e% a' +e'%.

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co%$'erat$o of t-e ca+5e 5a,$g '$rect$o6 %o t-at t-e ca+5e ca +e ree5e' o!t oto tra, or rac $ a %"oot- c!r#e

($t-o!t +e$g .

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!"+er a' 'e%t$at$o.

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a'eB!ate %tregt- to %!ort t-e ca+5e '!r$g fa!5t co'$t$o%.


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 1; of 21

/a''5e% a' f$=$g% for %ec!r$g "!5t$4core ca+5e% to t-e ca+5e tra, %,%te" ($55 +e of t-e aro#e' t,e6

($t- t-e "a=$"!" %ac$g of 19&"". /$g5e core ca+5e% $%ta55e' o ca+5e tra,% ($55 +e %ec!re' +, t-e aro#e'

ca+5e fa%teer%

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At eac- jo$t or ter"$at$o6 a o4ferro!% 5a+e5 %-a55 +e f$=e' to t-e ca+5e g$#$g %$


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 1? of 21

L+55ers O5,Lo!$%#$55e(oo'e %te 5a''er% t,e are a55o( to !%e

%o!' 5a''er% e#er !%e

Lea %$'e(a,% fro" 5a''er% $% for+$''e

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Reg!5ar $%ect$o% ($55 +e 'oe.

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A55 e5ectr$c %taff "!%t +e $ goo' %-ae

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D 9 C+'(e 5ru se))&%,

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ra$g %,%te" for t-e 'r!" ($55 +e a'#$%e

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:. RECORDS

I%ect$o C-ec L$%t% for:

Ca+5e La''er8Tra,

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M# te%t o ca+5e

LVte%t o ca+5e

LV te%t of tr!$g

1;. REFERENCE DOCUMENTS

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P5at EB!$"et Ma!fact!rerF% I%tr!ct$o ) >$r$g '$agra"%.

4 /ee "ore at: -tt:88(((."et-o'%tate"et-B.co"8$%ta55at$o4"et-o'4%tate"et4for4f$a54e5ectr$ca54coect$o%4

ter"$at$o4to4"#45#4eB!$"et.-t"5%t-a%-.(G=9f>NP.'!f

Method Statement ForInstallation Of Cable Tray OrTrunkingMethod Statement For Installation Of Cable Tray Or Trunking System For Building Electrical Services described below:
http://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunkinghttp://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunkinghttp://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunkinghttp://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunkinghttp://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunkinghttp://www.lopol.org/article/method-statement-for-installation-of-cable-tray-or-trunking


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 1@ of 21

1. Introduction and Scope of this method statement

This method statement is written for the purpose of establishing method and procedures for the Installation of Cable Tray and

G.I Trunking System for the building MEP services.

2. Applicable Projects Specification

Section: ELECTRICAL CONTAINMENT

Division: INSTALLATION

Sub Division: Subdivision

3. Location of Activity

Inside and outside the building.

4. Health and Safety Hazards

Specific safety measures have to follow as applicable, and all the safety measures are covered separately in the project safety

plan.

5. Operation

1. Materials:Materials used will be as per the material submittal approved by the engineer and routing as well and sizes

will be as per the approved drawings in co-ordination with other services.

2. Storage/ Protection:Cable Trays, Trunking and Accessories shall be unloaded with care to avoid any damages. If they

are shipped in packs or pallets, each pack of pallet shall be lifted individually with suitable lifting equipment. Every

precaution shall be taken to preserve their cleanliness before installation.

6. Installation Of Cable Tray Or Trunking System For Building Electrical Services

1. To make sure that the entire installation is in conformance and in accordance with the design intent of the project for

the Electrical and Low Voltage System in addition to the specification and as per approved shop drawings and comply

with Local and International Standards.

2. Adhere to the drawings as closely as possible. The right is reserved to vary the runs and sizes of Cable Trays /

Trunking and to make offsets but maintain as far as possible the free area of each duct work section, where necessary to

accommodate conditions arising at the building.

3. Before beginning installation in any area, examine all parts of the adjoining work onto which applicable work is to be

placed. Should any condition be found which will prevent the proper execution of the work, installation shall not proceed in

that area until such conditions are corrected by the contractor.

4. Cable Tray / Trunking shall be stored on site under cover in dry, well ventilated storage facilities.

5. Where sizes of Cable Trays / Trunking are not detailed on drawing then tray shall be adequately sized to support the

cables without bunching and a 25% reserve margin shall be allowed in size and weight be loaded.

6. All routes are chosen to allow ease of access to all cables when installed. All horizontal cables are to be set around all

vertical rising services as necessary. Ensure sufficient clearance from soffit for every installation.

7. Earth continuity conductors shall be provided across gaps in all Cable Tray / Trunking runs and bolted connections.

8. Support shall be by means of steel brackets installed at intervals necessary to provide a rigid fixing and to ensure that

deflection does not exceed 5mm mid span of support when fully loaded. Treatment of cut edges as per cut edges to be

included. Supports for Tray / Trunking (spacing) shall be as per standard practice and manufacturer's recommendations.


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9. Additional support shall be provided where the Cable Tray / Trunking changes direction or cables drop out of the cabletray. Dome headed bolts, nuts and washers of finish suitable to the tray shall be used between trays.

10. Suspension sets comprise threaded M10 zinc or cadmium plated hanger rods together with nuts and locking washers,

supports channel hold down clips all of which shall have a galvanized finish. Any cut ends supports, rods, etc, must be

corrosion protected by use of galvanized or equal. No extended rods to be left.

11. The cable tray shall be installed with a 40mm minimum space between the structure and the tray.

12. All cable shall be securely fixed to the tray, work and the complete installation must be carried out in a neat and

workmanlike manner without crossovers.

13. Cables on face-up horizontally fixed tray must be secured by use of the tie wraps where not in view. If cables are

bunched or single cables greater than 25sq mm are installed, cleats or metal straps shall be used.

7. Responsibilities

1. ProjectManager:

a. To ensure that all the preparation and application works are carried out according to the Contract

Specification.

b. To ensure that the progressing of works is carried out according to the planned program and as per the

approved method statement.

c. To ensure that all equipment and material required executing the work are available according to the planned

Construction Programme.

d. To co-ordinate with the Main Contractor, MEP co-coordinator and Safety Officer for a safe and proper

execution of the works.

2. Site Engineer:

a. To ensure that the works are carried out according to the Contract Specifications approved method

statement.

b. To provide all necessary information and distribute responsibilities to his construction team.

c. To monitor the progress of work in relation with the work program and to report to the Project Manager.

d. To co-ordinate with the safety officer and to ensure that the works are carried out in safe practicing methods.

. Foreman:

a. The foreman will carryout his duties by maintaining continuous coordination with the site engineer on daily

basis, and ensure proper distribution of the workforce in the required and planned locations.

b. To ensure that his assistant foreman/ charge hands are aware of the job requirements and they have enough

information to carry out their duties properly.

c. To ensure in consultation with the site engineer that the manpower involved in the works are moving as

agreed and planned for the work.

d. To ensure that the daily work is progressing as planned and advise the Site Engineer of any requirement for

the additional resources.

e. To control disposal of waste materials according to the instructions received from the site engineer.

f. To ensure full coordination with the safety officer to maintain safe working and proper house keeping of the

site, following the approved safety measures and further ensure that all his working team are aware of the same to

prevent accident and losses.

g. To inform the site engineer and of the areas ready for inspection.

h. Distribution and the control of materials shall be monitored by foreman and storekeeper.

3. SafetyEngineer:

a. Ensure the implementation of all the safety measures in accordance with the HSE plan and everybody aware

of it for it's proper implementation.

b. Ensure all the implemented safety measures are adequate to maintain the safe working on the site.

c. Inspect all the site activities and train the persons to prevent accidents and its proper reporting to the project

manager and the client.

d. Ensure that the site is maintained clean and tidy.


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METHOD STATEMENT FOR CABLE TRAYAND TRUNKING / LADDER Page No. : 2& of 21

8. Manpower Required

Charge Hand and Experienced Technicians

9. Inspection And Test Plan Format For Installation Of Cable Tray Or Trunking

ITPC(+useNo

I%spe)&o%Desr&p)&o%

T3pe o!I%spe)&o%

Re!ere%eDoue%)

Tes)&%,Re


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8. Open and box spanners9. Base Cutter

12. Health and Safety

Strictly followed as per the manufacturer's Health and Safety recommendations for handling and use of the materials. Ensure all

involved personnel shall be aware of the same.

13. Supporting Documentation

This method Statement should be read in conjunction with the below referenced documentations:

ITP for Cable Tray and Trunking

14. Distribution

Copies of this method statement have also been issued to the following for information/ action/ comments:

Project Manager

Site Engineer

Foremen

method statement for cable tray & trunking

Documents