Procedure for Structural Erection

8/13/2019 Procedure for Structural Erection

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Naser M.Al-Baddah & Partner General Trading & Contracting Co. W.l.l.

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No.NBTC M3 QC ERC 16. Cont. No.: 03UT02-053

Rev. No. 0 Approved !: "ite Manager Page 1 of 6

T#T$% METHOD STATEMENT FOR STRUCTURAL ERECTION.

INDEX

0 Scope

0 Reference

0 Responsibility

0 Receiving of Owner Supplied

materials0 Steel Erection Procedure

1 Metod of Erection

2 Pre assembly and !ifting Plan

0ErErection

$% &olted 'onnections

$% Inspection and "esting

$% Safety

$% +ttacments

M,-./ 0 *%$%* - /oundation Pad Inspection Report

M,0 ./ 0 %$%1 0Material Receiving Inspection Report

M,-./- *%$%2 -/inal Inspection Report

M,-./- *%$%, -'olumn Plumbness Report


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1.0 Scope.

This method statement describes the methods to be followed by

NBTC for executing the Erection of Structural Steel for the OL2K

echanical ! "ro#ect $

2.0 Reference.

%$ K2S & '%2( & (% & )abrication and erection of structural andmiscellaneous steel$

2$ *+SC, S-ecification for Structural steel Building$

3.0 Responsibility.

Structural Engineer shall be res-onsible for carrying out the #ob

as -er this method statement .C Engineer shall be res-onsiblefor carrying out all ins-ections$ aterial controller is res-onsiblefor recei/ing and storage of the material according to thedrawing

4.0$ Receiving of Owner Supplied materials$

0$% *ll Owner su--lied materials shall be recei/ed by the aterialController and shall be chec1ed for sie3 ty-e3 grade3 which meet

the re4uirements of drawings and standards and are traceable tomaterial certificates$

0$2 aterial shall be ins-ected for the o/erage3 shortage3 damage

and any changes will be brought bac1 to notice of Owner$

0$! aterial shall be stored in designated areas and segregated byty-e and 1e-t away from wal1ways and access routes$ Steelmember materials shall be suitably -rotected from corrosion and

deterioration$


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0$0 Bolts shall be stored in a closed container$

0$' aterials shall be 1e-t free of dirt3 grease and other foreignmatter$

5.0 Steel rection !rocedure.

'$% "et#od Of rection

'$%$% )abricated structural steel shall be erected using methods and ase4uence that will -ermit efficient and economical -erformance

of erection3 and that is consistent with the re4uirement of-ro#ect documents$

'$2$% !re $ssembly $nd %ift !lan

2$%$% "re5assembly of the structural steel will be carried out at the

ground le/el for erection con/enience whene/er -ossible$ *written assembly lift -lan shall be -re-ared for assemblies largerthan %' meters long3 larger than %67 s4uare meters in area orgreater than '( tons$ The assembly lift -lan shall demonstrate

that the -ro-osed lift shall be -erformed safely and thatassemblies being lifted will remain free from distortion or unduebending3 and will maintain structural integrity during the lift$

&.0 rection

7$% Before commencing wor1 the structural Engineer shall chec1 thefoundation and other connection -oints to confirm their location3orientation3 ele/ation and condition$

7$2 )abricated and -re5assembled com-onents shall be stored near

to the erection site$ )abricated and -re5assembled com-onentsshall be lifted using web slings or wire ro-e$ "ro-er care shall beta1en to a/oid gal/aniing 8 -ainting damages$

7$! Bearing surface of the -edestal shall be chi--ed to a surface-rofile of 9%( mm to im-ro/e bond$

7$0 "adding wor1 shall be carried out on the to- of the foundation to

1ee- 2' mm ga- for grouting -ur-ose$ "adding -lates shall be


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%'(x%'(x%( mm$ :e-ending u-on the base -late sie3 one ortwo -adding -lates will be used for -ro-er load distribution$

7$' Concrete surface shall be free from oil3 grease3 loose materials-rior to start erection$

7$7 The bottom surface of the base -lates shall be cleaned$

7$; Structural frames including other members shall be set to thelines and ele/ations as indicated on the drawings$

7$6 *ny tem-orary bracing or guy ro-es re4uired to counteractloadings im-osed during erection shall be installed< to ensure

safe and stable conditions of -artially com-leted structuralassemblies$ =hile tying the guy ro-e3 necessary -recaution shallbe ta1en to -re/ent damages to gal/aniing surfaces$

7$> *ny guy cables from the structural assembly shall be anchoredto the ad#acent -edestals where tem-orary base are fixed with

hoo1s for securing the guy cables$$

7$%( Tem-orary erection loads or -ermanent loads shall not be -lacedon any incom-lete -ortions of the structure being erected$

7$%% )it5u- bolts and drift -ins shall not be used to bring im-ro-erlyfabricated members and -arts into -lace$

7$%2 ?oles may be enlarged by maximum of %$' mm only when

necessary to ma1e connections resulting from minor misfit$Enlargement of holes shall be drilling only$ )lame cutting shallnot be used$ +n case of mismatch or fabrication error3 Ownershall be ad/ised and a--ro/al of modification obtained$

7$%! =hen connecting the structural member3 do not release the

hoisting belt until the steel member is secured with not less thantwo bolts or the e4ui/alent at each connection and drawn u-tight$

7$%0 *nchor bolts shall be tightened after the su--orted membersha/e been -ositioned and -lumbed$ )ine s-ecified tighteningshall be ensured after the base -late grouting$


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7$%' Lifting of @al/anied 8 "ainted structural members shall be donewith the non abrasi/e belts$

7$%7 *ny damage in the @al/aniing shall be re-aired$

'.0 (olted )onnections.

;$% Bolts shall be installed to ASnug tight condition$

;$2 Bolt tightening shall be done at higher ele/ation by using Ownera--ro/ed man lift 8 scaffolding$

;$! ?igh strength bolts shall not be reused after being fully

tightened3 nor shall they be used as fit5u- bolts$ etighteningbolts which may ha/e been loosened for tightening of ad#acentbolts is not considered to be reuse$

*.0 +nspection and ,esting

6$% The ins-ection and test -lan for structural steel wor1ssummarises /arious characteristics to be chec1ed and theacce-tance criteria against each characteristics$

6$2 .C+ will be res-onsible to ins-ect all materials3 installations toensure conformance with all re4uirements of the -ro#ects-ecifications$

6$! *ll bolted connections ins-ected by the .C+ will ha/e the endscolour coded with an agreed colour to indicate that ins-ection

has been -erformed and the connections are acce-table$

-.0 Safety

>$% Necessary wor1 -ermit shall be obtained before commencementof site acti/ities$

>$2 Ladders will be erected to -ro/ide safe access to and egress fromwor1 areas$

>$! Climbing or sliding down on columns is -rohibited$

>$0 Only trained em-loyees will be allowed to o-erate the man lifts$


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Documents

Procedure for Structural Erection