Const. Road at diff. Places after P/L Drainage Line under Muni. Counselor, M.P., M.L.A. budget in Dariyapur Ward

forquantitiesvaryingfromthoseprovidedfortheitemsinthecontractscheduleB.

ThebasisforthevaluationofvariationsforadditiontotheContractPriceshallbeasfollowsinthesameorderofprio

a) Variationsinthequantitiesofworkinscheduleofquantitiesshallnotvitiatethecontract.

b) ThecontractorshallbeboundtoexecuteextraitemsofworkasdirectedbytheEngineer-in-charge.

c) Contractunitratesforindividualitemsshallapplytovariedquantitieswherethereisaquantityvariat

d) Thepricevariationsonextraitemwillnotbegiven.

e) Incaseofothernontenderitemsfollowingprocedureshallapply.

IfanyextraitemcropsupduringtheprogressofworkthesameshallbecarriedoutbytheContractorandheshallbe

paidattheratefixedbyEmployerwhichshallbefixedaslowestoftheratesderivedbyrateanalysi

sbasedonthefollowingthreemethods.,thepriorityofthedocumentsformingtheContractshall

(i) IftheextraitemisincludedintheS.O.R.ofRoad&BuildingDepartment,Year2013-

14,therateofextraitemshallbethatrateandpremium(aboveorbelow)quotedbycontractor.

(ii) RateanalysisbasedonprevailingGovt.ofGujarat’sSORrates.

(iii) Rateanalysisbasedoncurrentmarketrates.Thisshallbebasedon

 Thematerialcosts,thelabourcosts,thecostofuseofallplant,machineryandequipment,thecos

tofalltemporaryandincidentalworks,theoverheadsandtheContractorsprofit.

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 Theoverheadsshallbetakenat5%ofthesumofmaterialcosts,thelabourcosts,thecostofuseofa

llplant,machinery,andequipment,thecostofalltemporaryandincidentalworks.

Incaseoftherateistobederivedfromprevailingmarketrate,theContractorsprofitshallbetakenat10%ofthefina

Intheeventofdisagreement,theEngineerinChargeshallfixsuchratesandpricesasare,inhisopinionappropriate

andshallnotifytheContractoraccordinglywithacopytotheEmployer.

TheEngineershalldetermineprovisionalratesandpricestoenableonaccountpaymentstobeincludedintheInte

rimPaymentCertificates,untilratesandpricesareagreedasfinalbytheEmployer,theContracto

r,andtheEngineer.

TheContractorshallnotbeentitledtoDeputypaymentforcosts,whichcouldhavebeenavoidedbygivingearlywa

Paymentsshallbeadjustedfordeductionsforadvancepayments,retention,otherrecoveriesintermsofthecont

ractandtaxesatsource,asapplicableunderthelaw.TheEmployershallpaytheContractorthea

mountscertifiedbytheEngineer.

Ifanamountcertifiedisincreasedinalaterdatecertificateduetocorrectionsinpreviouscertificatesorasaresulto

fanawardfromdisputesreviewexperts,Contractorshallbepaidsuchamountonly.TheContract

orshallnotbepaidanyinterestuponsuchdelayedpayment.

ItemsoftheworkforwhichnorateorpricehasbeenenteredinwillnotbepaidforbytheEmployerandshallbedee

medcoveredbyotherratesandpricesintheContract.

AllpaymentsshallbemadeinAhmedabad.

12 Taxesandduties

TheratesareinclusiveofalltheprevailingtaxesanddutiesoftheCentral,StateandLocalGoverningbodiesprevaili

ngonthedateofawardofthecontract.TheContractorwillhavetopayallsuchtaxesanddutiesfor

theperformanceofthisContract.TheEmployerwilldeductfromtheContractor’smonthlyando

therpaymentsalltaxesandduties,whichheisboundtorecoverinaccordancewiththeapplicabl

TheContractorshallkeephimselffullyinformedofallactsandlawsoftheCentral&StateandlocalGoverningbodi

es,allorders,decreesofbodies,tribunalshavinganyjurisdictionorauthoritywhichinanymanne

raffectthoseengagedoremployed,andanythingrelatedtocarryingoutthework.Allthebye-

lawslaydownbyAMC/AUDAandanyotherlocalbodieswhileexecutingtheworkshallbeadhere

dto.Alltaxesoflocalbodiesshallbebornebythecontractor.TheContractorshallarrangetogivea

llnoticesrequiredbyanyauthorityandtopaytosuchauthorityallthefeesthatmayhavetobepai

dforthematerial,plants,equipmentsetc.TheContractorshallalsoadheretoalltrafficrestrictio

nsnotifiedbythelocalauthorities.HeshallprotectandindemnifytheOwneranditsofficials&em

ployeesagainstanyclaimorliabilityarisingoutofviolationsofanysuchlaws,ordinances,orders,

decree,whetherbyhimselforbyhisemployeesorhisauthorizedrepresentatives.Nothingextra

shallbepayableontheseaccounts.

13.0 LabourWelfareCess

AspercircularNo.GHR/2005/04/CWA/2004/841/M-3dt.3/1/05andG.R.No.CWA/2004-1831-

M(3)dt.9/12/05issuedbyG.O.G.(non-

refundable)shallbedeductedfromeverybillswhichshallbedepositedtoGovt.LabourDepartmentforL

abourwelfarefund.

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AhmedabadMunicipalCorporation

14.0 Currencies

AllpaymentsshallbemadeinIndianRupees.

15.0 AdvancePayment

NoAdvancePaymentshallbemade.

16.0 CostofRepairs

LossordamagetotheWorksorMaterialstobeincorporatedintheWorksbetweentheStartDateandthee

ndoftheDefectsCorrectionperiodsshallberemediedbytheContractorattheContractor'scostiftheloss

ordamagearisesfromtheContractor'sactsoromissions.

B. FINISHINGTHECONTRACT

17.0 Completion

TheContractorshallrequesttheEngineertoissueaCertificateofCompletionoftheWorksandtheEngine

erwilldosoupondecidingthattheWorkiscompleted.

18.0 Termination

TheEmployershallbeentitledtoterminatethecontractifthecontractor:

(a) Failstocarryoutanyobligationunderthecontract.

(b) Withoutreasonableexcusefails–

1. TocommencetheworksonsitewithintheperiodstatedintheAppendixtoBidafterreceiptbyhi

mofaNoticetothiseffectfromtheEngineer/Employeraftersigningtheagreementor

2. Toproceedwiththeworks,oranysectionthereof,within28daysafterreceivednotice

3. Hasfailedtocomplywithanoticeissuedoraninstructionissuedwithin28daysafterhavingreceiv

4. Abandonstheworksorotherwiseplainlydemonstratestheintentionnottocontinueperforma

nceofhisobligationunderthecontract.

contractstheworksorassignsthecontractwithoutthespecificpriorwrittenpermissionoftheen

6. Hasfailedtofurnishtherequiredsecuritiesorextensionthereofintermsofthecontract.

7. Becomesbankruptorinsolvent,goesintoliquidation,hasareceivingoradministrationorderma

deagainsthim,compoundswithhiscreditors,orcarriesonbusinessunderreceive,trusteeorma

nagerforthebenefitofhiscreditors,orifanyactisdoneoreventoccurswhich(underapplicableL

aws)hasasimilareffecttoanyoftheseactsofevent.

Inanyoftheseeventsorcircumstances,theEmployermay,upongiving14daysnoticetothecontractor,terminat

ethecontractandexpelthecontractorfromthesite.However,inthecaseofsub-

paragraphs(h),theEmployermaybenoticeterminatethecontractimmediately.

TheEmployer’sdecisiontoterminatethecontractshallnotprejudiceanyotherrightsoftheEmployer,underthec

ontractorotherwise.

Aftertermination,theEmployermaycompletetheworksand/orarrangeforanyotherentitiestodoso.TheEmplo

yerandtheseentitiesmaythenuseanygoods,contractor’sdocumentsandotherdesigndocum

entsmadebyoronbehalfofthecontractor.

TheEmployerortheContractormayterminatetheContractiftheotherpartycausesafundamentalbreachofthe

FundamentalbreachesofContractinclude,butshallnotbelimitedtothefollowing:

(a) theContractorstopsworkfor14dayswhennostoppageofworkisshownonthecurrentProgramand

thestoppagehasnotbeenauthorizedbytheEngineer;

(b) theEmployerortheContractorismadebankruptorgoesintoliquidationotherthanforareconstructi

onoramalgamation;

(c) Thecontractorfailstofulfillrequirements;

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AhmedabadMunicipalCorporation

(d) theEngineergivesNoticethatfailuretocorrectaparticularDefectisafundamentalbreachofContrac

tandtheContractorfailstocorrectitwithinareasonableperiodoftimedeterminedbytheEngineer;

(e) theContractordoesnotmaintainasecuritywhichisrequired;

(f) theContractorhasdelayedthecompletionofworksbythenumberofdaysforwhichthemaximuma

mountofliquidateddamagesbecomespayableasdefinedintheContractdata;

(g) iftheContractor,inthejudgmentoftheEmployerhasengagedincorruptorfraudulentpracticesinco

mpetingfororintheexecutingtheContract.

(h) Forthepurposeofthisparagraph:“corruptpractice”meanstheoffering,giving,receivingorsolicitin

gofanythingofvaluetoinfluencetheactionofapublicofficialintheprocurementprocessorincontra

ctexecution.“Fraudulentpractice”meansamisrepresentationoffactsinordertoinfluenceaprocur

ementprocessortheexecutionofacontracttothedetrimentoftheBorrower,andincludescollusive

practiceamongBidders(priortoorafterbidsubmission)designedtoestablishbidpricesatartificialn

on-competitivelevelsandtodeprivetheBorrowerofthebenefitsoffreeandopencompetition.”

WheneitherpartytotheContractgivesnoticeofabreachofcontracttotheEngineerforacauseotherthanthoselis

tedabove,theEngineershalldecidewhetherthebreachisfundamentalornot.

Notwithstandingtheabove,theEmployermayterminatetheContractforconvenience.

IftheContractisterminatedtheContractorshallstopworkimmediately,maketheSitesafeandsecureandleavet

heSiteassoonasreasonablypossibleandhandoverthesitetotheEmployerincludingallmateria

lsandplantandequipmentexistingthereupon.

19.0 Contractor'sownresponsibility

Thecontractoristosetoutandleveltheworksandwillberesponsiblefortheaccuracyofthesame.Heshalla

lsoberesponsibleforthecorrectnessofthepositions,levels,dimensions,andalignmentofallpartsofthes

tructuresasperinstructionsgiventohim.Ifatanytimeanyerrorshallappearduringtheprogressofanypar

tofthework,thecontractorshallathisownexpenserectifysucherrorifcalledupontothesatisfactionofth

eEngineerincharge.

20.0 Overpayment&Underpayment

WheneveranyclaimFifthspaymentofasumtotheMunicipalCorporationarisesoutoforunderthisContractagain

stthecontractorthesamemaybedeductedbytheMunicipalCorporationfromanysumthendue

orwhichatanytimethereaftermaybecomeduetothecontractorunderthiscontractandfailingt

hatunderanyothercontractwiththeMunicipalCorporationorfromanysumduetothecontracto

rwiththeMunicipalCorporation(whichmaybeavailablewithMunicipalCorporation),orfromhi

sretentionmoney,orheshallpaytheclaimondemand.TheMunicipalCorporationreservestheri

ghttocarryoutpostpaymentauditandtechnicalexaminationofthefinalbillincludingallsupporti

ngvouchers,abstracts,etc.

TheMunicipalCorporationfurtherreservestherighttoenforcerecoveryofanyoverpaymentwhendetectednot

withstandingthefactthattheamountofthefinalbillmaybeincludedbytheContractor.

Ifasaresultofsuchauditandtechnicalexaminationanyoverpaymentisdiscoveredinrespectofanyworkdonebyt

heContractororallegedtohavebeendonebyhimunderthecontract,itshallberecoveredbythe

MunicipalCorporationfromthecontractorbywayofallthemeansprescribedaboveorifanyunde

rpaymentisdiscoveredbytheMunicipalCorporation,anyamountduetothecontractorunderthi

scontractorunderpaymentmaybeadjustedagainstanyamountthendueorwhichmayatanytim

ethereafterbecomeduebeforepaymentismadetothecontractorfromhimtotheMunicipalCor

porationonanyothercontractaccountwhatsoever.

21.0 Materialsobtainfromdismantling

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AhmedabadMunicipalCorporation

Ifthecontractor,inthecourseofexecutionofworkiscalledupontodismantleanypartforreasonsotherth

anonaccountofbadorimperfectwork,thematerialsobtainedfromdismantlingwillbethepropertyofthe

A.M.C.andwillbedisposedofasperinstructionofEngineer-in-chargeinthebestinterestoftheA.M.C.

22.0 DisputetobereferredtoArbitrator

Thedisputesrelatingtothiscontract,sofarastheyrelatetoanyofthefollowingmatters,whethersuchdis

putesariseduringtheprogressoftheworkorafterthecompletionorabandonmentthereof,shallberefer

redanindependentArbitratorappointedbyAMCasfarpossibleinconsultationwiththeagencyifitisnece

ssaryandsuchdisputesshallbesettledinaccordancewiththearbitrationandconciliationAct.1996.

(i) Theratesofpaymentunderclause5foranytools,materialsandstores,inorupontheworksofthe

sitethereoforbelongingtothecontractororprocuredbyhimandintendedtobeusedforexecuti

onoftheworkoranypartthereofpossessionofwhichmayhavebeentakenbytheEngineer-in-

chargeunderthesaidclause–5.

(ii) ThereductioninratesmadebytheEngineer-in-

chargeunderclause9fromtheitemsofworksnotacceptedascompletedfullyinaccordancewith

thesanctionedspecifications.

(iii) TherateofpartofpaymentforanyclassofworkwhichisincludedintheDeputyoralteredworkcar

riedoutbythecontractorinaccordancewiththeinstructionsoftheEngineer-in-

chargeunderclause14andtheratesforwhichistobedeterminedunderthesaidclause14.

(iv) Theratesofpaymentformaterialsalreadypurchasedoragreedtobepurchasedbythecontracto

rbeforereceiptofnoticegivenbytheEngineer-in-

chargeunderclause15and/oramountofcompensationpayabletothecontractorunderthesai

dclauseforlossinrespectofsuchmaterials.

(v) Theamountofcompensationwhichthecontractorshallbeliabletopayunderclause17intheeve

ntofthisfailuretorectify,removeorreconstructtheworkwithintheperiodspecifiedinthewritte

nintimationortheamountofexpensesincurredbytheEngineer-in-

chargeunderthesaidclause17inrectifying,removingorre-

executingtheworkorinremovingandreplacingthematerialsorarticlescomplainedof.

(vi) ThereductionofratesasmaybefixedbytheEngineer-in-

chargeunderclause17fortheinferiorworkormaterialsasacceptedormadeuseof.

(vii) Theamountofcompensationpayablebythecontractorfordamagesasestimatesandassessed

(viii) Theamountpayabletothecontractorfortheworkcarriedoutunderclause33inaccordancewit

htheinstructionsandtherequirementoftheEngineer-in-

chargeincasewheretherearenospecifications.

(ix) Theawardsdeclaredbythearbitratorshallbespeakingawardgivingreasonsandcalculationsto

everyitemofclaims.Thedecisionwillhavetobeimplementedbyalltheconcerned.

(x) IncaseofdisputeleadingtothecontractororAhmedabadMunicipalCorporationapproachingo

nCourtofLaw.Itshallbewithinthejurisdictionwherethesiteofworkissituated.

Thereferencetoarbitrationproceedingunderthisclauseshallnot:

i) EntitlethecontractortostoptheAffecttherightoftheEngineer-in-

chargeunderclause5totakepossessionofalloranytools,plants,materialsandstoresinoruponthewo

rksofsitethereofbelongingtothecontractororprocuredbyhimandintendedtobeusedfortheexecuti

onoftheworkoranypartthereof.

ii) PrecludetheEngineer-in-

chargefromutilizingthematerialspurchasedbythecontractorinanyworkorfromremovingsuchmat

erialstootherplaces,duringtheperiodtheworkisstoppedorsuspendedinpursuance,ofnoticegivent

othecontractorunderclause15.

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AhmedabadMunicipalCorporation

iii) ProgressoftheworkorthecarryingouttheDeputyoralteredworkinaccordancewiththeprovisionsofc

lause14orasthecasemaybe,ofclause33.

23.0 DrawingsandPhotographsoftheWorks

Thecontractorshalldophotography/videographyofthesiteasandwhenaskedbyAMC.Noseparatepaymentwil

lbemadetothecontractorforthis..Thecontractorshallhavetosubmitthesameinhardcopyasw

ellassoftcopyasandwhendemandedbytheAMC.

Nophotographoftheworksoranypartthereoforplantemployedthereon,exceptthosepermittedunderclause5

9.1,shallbetaken,orpermittedtobetakenbytheContractororbyanyofhisemployeesoranyem

ployeesofhissub-

ContractorswithoutthepriorapprovaloftheEngineerinwriting.Nophotographs/videography

shallbepublishedorotherwisecirculatedwithouttheapprovaloftheEngineerinwriting.

SealandSignatureoftheBidder AddCityEngineer

Date: AhmedabadMunicipalCorporation

SignatureofBidder Page20of228

AhmedabadMunicipalCorporation

ybœtJtœ BGþrlrmvj ftuvtuohuNl

ftb btxuLþk xftJthe œhJt¤wk xuLzh ylu ftuLx[tfx

xuLzh btxule Nh<tu

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ftuLx[fxhtu Che NfNu. dJobuLxlt btLg ftuLx[tfxhu ybœtJtœ BGþrl.ftuvtuohuNlbtk btLg ftuLx[tfxhtule gtœebtk

hSMxuNl fhtJJtlwk hnuNu.

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f:- xuLzhhle jtgft<

ftb sJtc>th xuLzhh <ubs su xuLzhh mwaJuj ftuLx[tfxhle ©uKe ytJ<t ntug <ubs ftb fhJt mûtb ntug

<ublu s ytvJtbtk ytJNu. ftb ytv<t vnujt ftuLx[tfxhu ftb mk<tu»tfthf <ubs xtRb jebexbtk ÃþY fhJt

sYhe mJj<,ylwCJ, ûtb<t ylu VtgltLmegj hemtumo hsw fhJtlt hnuNu.

z:- ybœtJtœ Bgwrlrmvj ctuzo XhtJ lk - 3836,<t.25/11/2011 &e b¤uj bkswhe ylwmth <&t

mexe.Rsluh mh¾gwjh,lk -17,<t.09/12/2012 bwsc ybœtJtœ Bgwrlrmvj ftuvtuohuNlbtk ftuLx[t¾xh

hSMxuNl Ve, heLgwyj Ve <&t yvd{uzuNl Ve ylu btvœkztu ægtlbtk htFe <u bwsc ybj fhJtltu hnuNu.

E:- xuLzh Ch<t vnujt xuLzhhu mtRx rlheûtK fhe juJwk. xuLzhh ftblt «fth, ngt< hM<t, vtKe btdo, mkath

ylu JvhtNlt ceò hM<tytu&e mk<wÐ ntuJtlwk btle juJtbtk ytJNu. xuLzhhu ftblu mtRx ylu rcÕzekd(fu su

ftb fhJt, ftb ÃþY fhJt <&t ftblt buRxulLm btxu cltJuj ntug).<ubs xuLzhhu yt mtRxlt ftb btxu,

rcÕzekd btxu, gtzo, zevtu btxule søgt vtu<tle he<u bu¤Je juJtle hnuNu. (xuLzhlwk ftb fhJt, ftb vwhwk fhJt

<&t ftblt buRxulLm btxule søgt)

(h) yt ftble mbg bgtoœt bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk sKtJuj «btKu le hnuNu.

(3) xuLzh Jujezexe rvhegz bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk sKtJuj «btKu le hnuNu.

(4) xuLzh Ch<e JF<u yluoMxble ChJtle hnuNu.

(5) xuLzh Vtubo

xuLzh Vtubo ylu ylwmwrabtkle œhufu œhuf Ftje søgt xuLzh Chlthu Chuje yt mt&u btufjujt œM<tJus vh< fhJtlt

(6) ftuLx[tfxhtuyu leaule ctc<tu ft¤SÃËJof JtkaJt rJlk<e Au.

(1) ftuR fkvlelu ltbu xuLzh juJtbkt ytÔgwk ntug <tu fkvle J<e xuLzh vh mne fhlth Ôgrf<lu yr^f]< fh<wk

bwFðgthltbwk xuLzh mt&u hsw fhJtlwk hnuNu.

(2) Bgwrl.ftuvtuohuNllt «Joðbtl rlgbtu ylwmth yluMxble ChJtle hnuNu.ylu xuLzh mt&u cezJtle hnuNu.

(3) ftuLx[tfxhu RLfbxuût mkckr^< vtl lkch <&t cukf zexuRj ytvJtle hnuNu.

(4) ftuLx[tfxh vtmu ydtWlt ylwCJt ykdult «btKvºttule lfj xuLzh mt&u hsw fhe NfNu.

(5) xuLzh Nh<tu ylu MvuNeVefuNl <&t CtJ vºtflt œhuf vtlt ylu rJd<tu vh ftuLx[tfxhu mne fhJe.

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AhmedabadMunicipalCorporation

(6) <btb mw^tht, AufAtf ylu Dwkxujt jFtK vh ftuLx[tfxhu xwkfe mne fhJe.

xuLzh Chlthlu sKtJJtbtk ytJu Au fu xuLzh œM<tJustult jFtKbtk ftuR AufAtf fu VhuVth fhJtbtk ytJtNu

lrn ylu ytJe ftuR AufAtf fu VuhVth juJtNu lrn, <ultk jFtKbtk ftuR Cwj ntug <tu <ult vh l Dwkx<t

Ftuxt jFtK fu ytkfzt vh Auftu bthelu <ult mtawk jFtK fu ytkfzt MvÐ Wfju <u he<u jFJt. «ðguf mw^tht

vh xwkfe mne fhJe.

(8) y:- xuLzh hsw fh<tk vnujt Ftm fhelu xuLzhbtk œNtoJuj mwaltytulwk vtjl fhJtbtk ytÔgw lrn ntug <tu xuLzh

ybtLg dKJtbkt ytJNu <ule ltuk^ juJt rJlk<e Au. J¤e yt Vtubolwk bwFv]ƒ ylu ftuLx[tfxhtult btdoœNol

btxu mtbtLg rlgbtu ylu mwaltytu vK ft¤SvwJof JtkaJt rJlk<e Au.

(1) ftuEvK fthK œNtoÔgt rmJtg ftuEvK fu c^t xuLzhtu yMJefthJtltu n¬ yctr^< hnu Au.

(h) xuLzhhu ctujvtuELx vullt c>ju NtneJt¤e vul&e Chujt xuLzhtu ðþkh< s ybtLg dKJtbtk ytJNu.

c:- Wvhle ctc<tu Wvhtk< xuLzh leault mkstudtubtk <h< ybtLg XhJtlu vtºt &Nu.

(1) xuLzh Chlth, rlg< ftb y&Jt ftb btxu bkswh fhuj y&Jt CtJ vºtflt ftuR ftuz y&Jt vîr< y&Jt

rJd<tubtk bwfuj Nh< y&Jt mw^thtbtk ftuR VuhVth mwaJ<t ntug.

(h) xuLzhlwk ftuR vtlwk fu vtlt ftZe ltkÏgwk/ltkÏgt ntug fu cœÕGþ / cœÕgt ntug.

(3) c^t mw^tht J^tht y&Jt atukxtzuje ftvjeytu Wvh xuLzh Chlthu xwkfe mne l fhe ntug.

(4) xuLzhbtk <ubKu ftuR AufAtf fhe ntug, ylu

(5) xuLzh Chlth y&Jt vuZele ctc<btk œhuf Ctdeœth y&Jt <u ykdulwk bwFðgthltbwk ^htJlth Ôgrf< mne

l fhu y&Jt xuLzhbt <u btxu htFJtbtk ytJuje søgtbtk mne/mneytu Wvh ftuR mtûteyu mtF fhe l ntug.

f:- Nh<e xuLzh MJefthJtbtk ytJNu lne.

z:- xuLzh MJefthJw, hœ fhJw, ftulu ytvJw ylu fgt CtJ&e ytvJw <u ykdu Bgwrl. frb§h©eltu rlKog ytFhe

hnuNu. ftuR fthKmh stu ftuLx[tfxhlu ftb l ytve Nftg <tu <u ykdu ftuLx[tfxh ftuRvK «fthltu lwfNtle fu

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y&o ftb ytve œuJtLþk Au <uJtu &R NfNu lrn.Nh<e xuLzh MJefthJtbtk ytJNu lne.

(9) rJmkdr< ylu rnmtc stud:

nt& ^hJtlt ftbtule ctc< œNtoJ<t CtJ vºtfbtklt sÚ&t ylu hfble ftuRvK Cwjawf leault

rlgbtu ylwmth mhCh fhJtbtk ytJNu.

(1) xuLzh Chlthu œhuf Ftltbtk sKtJuj Nçœtu ylu ytkfzt Jåau ftuR ymkdr<lt fumbtk Nçœtuubtk sKtJuj hfb

btLg htFJtbtk ytJNu.

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Cwj sKtg <tu yufb œh btLg htFJtbkt ytJNu ylu œhlt yt^thu dwKtfth mw^thJtbkt ytJNu.

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(10) y:- ftbltu «tud{um mbgbgtoœt bwsc fhJtltu hnuNu. yt mbgbgotœt 10 jtF mw^elt ftb btxu

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AhmedabadMunicipalCorporation

yuj.ytu.ytR. ytÃgt <theF&e 10 rœJm <&t 10 jtF &e Wvhltk ftb btxu yuj.ytu.ytR. ytÃg <theF&e

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dKJtbtk ytJNu. ylu <ubtk atjw ftb œhBgtl su ftuR VuhVth &Nu <ultu J^thtu awfJJtbtk ytJNu lrnk.

c:- mûtb m•tt îtht Yt.10,00,000.00 (œm jtF) mw^elt xuLzhle bkswheltu XhtJ vtzgt ctœ (LOI)

ytvJtbtk ytJNu ðgth ctœ rœl - 10 btk rm¾gtuhexe zevtuÍex sbt fhtJJtle hnuNu. rm¾gtuhexe zevtuÍex

btuze ChJtlt rfMmtbtk Bgwrl.ftuvtuohuNlbtk «Joðbtl rlgb ylwmth ftgoJtne fhJtbtk ytJNu.

f:- bkswh &guj xuLzhle mbgbgtoœtbtk ftbdehe vqKo l &tg <tu bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk

sKtJuj «btKu bkswh &guj mbgbgtoœt ctœlt FhuFh ctfe ftble hfblt bn•tb 10% juFu

(jefJezexe zubuSm) vulÕxe Jmwj fhJtbtk ytJNu.

(11) y:- awfJKe:-

xuLzh Chlthu yu Jt< mbS juJtle hnuNu fu <uKu xtkfujt œh vwhtk &gujt ftb btxult Au ylu <ubtk bswhe,

vtjF, ÃjtLx, œuFhuF, mhJem-ftbdehe, Jes¤e, htugÕxe ylu ytufx[tug Jduhu ykNu <btb Faoltu <&t

sYh sKtg <tu ylu ðgthu ht<vt¤elt ftblu juJt c^t J^thtlt Faoltu mbtJuN &Nu ylu xtkfujt CtJ fu

œh fh<t J^thtle ftuR awfJKe ykdult <ublt ftuR œtJt ægtlbtk juJtNu lnek ylu xuLzh Chlth Ftuxe

hswyt<lu fthKu y&Jt ftuR Ôgrf<yu (vAe<u ctk^ftb rJCtdltu fboathe ntug fu l ntug) <ublu ytvuje

btne<elu yt^thu vtA¤&e ftuR œtJt hsw fhJt nfœth hnuNu lnek. <ublw xuLzh ChJt <&t <ubtk swœt swœt

CtJ ylu œh ChJt btxu sYhe yuJe <btb btne<e vtu<tlt vûtu l bu¤Je NfJtlu fthKu vtu<u xuLzh hsw

fhJtlu je^u y&Jt <ubtk&e WCt &<t ftuR stuFb fu sJtcœthebtk&e Axfe NfNu lnek. mœh ftbbtk ftuR

vK ò<lt ctk^ftblt bxehegj Wvh CtJ J^thtu ytvJtbtk ytJNu lrnk.

c:- ftuLx[tfxhtulu vubuLx / hlekd cej Bgwrl. frb§h©elt su <u «J<obtl rlgb bwsc fhJtbt ytJNu. <&t

Bgwrl. frb§h©e/mexe Rsluh©e lt su <u JF<ltk mh¾gwjh «btKu ftbdehe/ybj fhJt rcl Nh<e

ckDlf<ot hnuNu.

f:- ftuLx[t¾xhlt œhuf hlekd cejbtk&e ftuLx[t¾xhlu awfJJtle &<e fwj hfb Wvh (xuLzh bwsclwk vubuLx +

yu¾x[t ytRxb) 2 % juFu hexulNl ble ftvJtbtk ytJNu su VtRlj cejbtk vh< ytvJtbtk ytJNu.

z:- htsg / fuL÷ mhfth©elt JF<tuJF<lt ftgœt bwsc su ftuR hfble fvt< fhJtle &Nu <u bwsc

ftuLx[tfxhlt cejbtk&e fvt< fhJtbt ytJNu.

(12) yu:- fhth mkc^e œM<tJustu fhthlt ydðglt Ctd dKtNu ylu <u mD¤t mne<lt fhth mbd{ ftblu jtdw

ce:- xuLzhbtk œNtoJuj ftb mkck^e œM<tJusbtk œNtoJuj rJd<btk rJmkd<<tlt rfMmtbtk leau œNotJuj ¢btlwmth

œM<tJusbtk œNtoJuj rJd< d{tng htFJtbkt ytJNu.fhth mkc^e œM<tJustu fhthlt ydðglt Ctd dKtNu

ylu <u mD¤t mne<lt fhth mbd{ ftblu jtdw vzNu.

(yu) yufb ylu fœ:-

(2) xuLzh VtuboLþk CtJvºtf

(3) MvuNeVefuNl

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z[tu#dbtk fœ, ytfth, ytkfzt fœta Ftuxt ntug <tu btvujt fœ, ytfthlu yLþmhÔþk

(2) xuLzh Vtubole yLþMþra-ce

(3) MvuNeVefuNl

Cwj Chujt fu Ftuxt JKollt rfMmtbtk yt mkck^e Wvhefûttyu rJmkd<<t ykdule ltuk^ bwfe

yuze.mexe yuLSlegh / zu.BGþrl.frbNlh©ele bkswhe bu¤JJtbtk ytJNu ylu <u bwsc fhJtbkt ytJuj

rlKog ykr<b dKJtbkt ytJNu.

(13) xuLzhhu z[tuRkd fu MvuNeVefuNlbtk hnuje ftuR ûtr< fu Ftbeltu duhjtC juJtle fturNN l fhJe ylu Rsluh

Rlatsuo Ãjtl <&t MvuNeVefuNlle ûtr<ytu mw^thJe <&t <ulwk mtawk y&oDxl fhtJJwk.

(14) yt Wvhtk< y.Bgw. ftuvtuo. lt slhj ftuLx[tfx fLzeNl vK btLg htFJle hnuNu.

(15) yufe JF<u yuf fh<t J^w søgtytuyu ftb NY fhJtltu Jfo ytuzoh b¤u <tu ftb yuf mt&u s c^u NY fhJw

(16) atjw ftbu mrJom jtRllu lwfNtl l &tg <u he<u ftb fhJtlw hnuNu. stu ftuR mrJom jtRllu lwfNtl &Nu

<tu <ule mkvwKo sJtcœthe (òlbtj) ftuLx[tfxhle vtu<tle hnuNu. mtRx Wvh ftb œhBgtl bswhtu fu

sl<tlt ftuR btKmlt òlbtj lu lwfNtl &tg <ule sJtcœthe ftuLx[tfxhle hnuNu. vtujem Vrhgtœ &tg

<tu <ule sJtc>the vK ftuLxtfxhle hnuNu. CuFz Dme l vzu <ule sJtc>the vK vtujem Vrhgtœbt

ftuLx[tfxhle hnuNu. CuFz Dme l vzu <u btxu mjtb<elt vdjt (suJt fu œtuhzwk ctk^e bswh Ftztbtk W<thJt,

mtuhekd ylu Mx[xekd fhJt rJduhu) je^t Jdh bsqhlu Ftztbtk W<thNu <tu ftuLx[tfxh s vtujem Vrhgtœbt

sJtcœth hnuNu ylu Bgwrl.ftuvtuohuNlltu ftuRvK MxtV ytlt btxu sJtcœth hnuNu lrn. ytxjwk mbSlu s

xuLzh ChJwk. œhuf ftb fh<t bswhtultu rJbtu vK W<thujtu ntuJtu stuRyu.

(17) bxehegÕm fu ceò xuMxed hevtuxo ftuLx[tfxhu vtu<tlt Fauo ftuvtuohuNl sKtJu <u søgtyu fhtJJtlt hnuNu.

bxehegÕm jtJJt fu jR sJtltu mkvwKo Fao ftuLx[tfxhu CtudJJtltu hnuNu.<&t atjw ftb œhBgtl

yuLSlegh Rlatso îtht ybœtJtœ Bgwrlmevj ftuvtuohuNlle buxjzuvtu jucbtk xuMxekd fhtJJt sKtJJtbtk

ytJu <tu ftuLx[t¾xh îtht <ulw vtjl fhJtlw hnuNu.

(18) M&¤ vrhrM&r< / sYhegt< bwsc ftb fhtJ<t xuLzhlt ytRxblt sÚ&tbtk J^ ^x &tg <tu rlgb ylwmth

<u ykdu ftb fhJt ftuLx[tfxh ck^tgujt Au.

(19) mtRx vh jtJJtbtk ytJuj btj mtbtl hesufx fhJtbt ytJu <tu <whk< rœl 1btk vh< jR sJtltu hnuNu.

yLg&t <ule lwfNtlle sJtc>the ftuLx[tfxhle hnuNu.

(20) ftuLx[tfxhlu su ftuLx[tfx ytvJtbtk ytJu Au. <ubt mhfth©elt «Joðbtl rlgb bwsc ve.yuV/juch yufx

<&t bswhtu <&t MxtVle Jebt vtujeme jElu <ult ftgœtlw vtjl fhJtlwk hnuNu <&t yt ykdu

Bgwrl.ftuvtuohuNl îtht su btne<e btkdJtbtk ytJu <u ytvJtle hnuNu. bu.BGþrl.frbNlh©elt mh¾âwjh

Bþsc sYhe ctknu^he vºtf ytvJtLþk hnuNu.

(21) ftuRvK ftgœtfeg jexeduNl ybœJtœ Nnuhle ftuxobt hnuNu.

(22) btj su <u Mxtumo Wvh y&Jt mtRx Wvh jtuftulu lz<h l &tg <u he<u mwalt bwsc W<thJtltu <ubs

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dtuXJJtltu hnuNu.

(23) ftuR vK mhfthe fhJuht ChJtle <btb sJtcœthe ftuLx[tfxhle hnuNu.

(24) ftuLx[tfxh îtht xuLzhbt œNtoJuj MveNeVefuNl bwsc MxtLzzo bxehegÕm MvuNeVefuNl bwsc jtJJtlt

hnuNu.<&t xuMxekd fhtJJtlwk hnuNu.<&t y ykdu «Joðbtl Bgwrl.ftuvtuohuNlt rlgbtulw vtjl fhJtlw hnuNu.

(25) yt xuLzhbtk stu ftuR ytRxb hne dR ntug <tu <u y&Jt M&¤ M&e<e bwsc xuLzhbtk mbtJuN l ntug <uJe

J^thtle ftbdehe fhJtle &tg <uJt rfMmbtk Bgwrl.ftuvtuohuNlt «Joðbtl rlgb ylwmth J^thtle

ytRxblt CtJ lffe fhJtbtk ytJNu ylu <u bwsc awkfJKe fhJtbtk ytJNu.

(26) atjw ftb œhBgtl «tuxufNlle mkvwKo sJtcœthe ftuLx[tfxhle hnuNu. subtk vevzt, œtuhzt Cgmwaf ctuzo,

ÃjtMxef vèe, rJ. ftuLx[tfxhu jtJJtlwk ylu mtaJJtlwk hnuNu. ylu ftuRvK yfMbt< &Nu <tu <ule mkvwKo

sJtc>the ftuLx[tfxhle hnuNu.

(27) M&¤ Wvh atjw ftbdehe œhBgtl ftb fhlth ftuLx[tfxhlt bswh / fboathe y&Jt yLg Ôgrf<lt

yfMbt<lt rfMmbtk juch yufx bwsc fhJtle &<e ftgoJtne <&t vtujem ftgoJtnele sJtc>the

ftuLx[tfxhle hnuNu.

(28) stu MxtV mqalt ytvu <u bwsc mwalt vtu&e ftuLx[tfxhu htFJtle hnuNu. <ubtk œhhtus fhuj ftbdehe <&t

yr^ftheytuyu ftb mw^thJt fu «tud{um J^thJtlt ltuk^ fhuj ntug <tu <ulwk ftuBÃjtgLm ytvJtlwk hnuNu ytJe

ltu^lt sJtc l &gu fu <u «btKu M&¤ Wvh ybj l &gu ftuLx[tfxhlu vulÕxe fhJtle m•tt yuze.mexe

yuLSlehgh©elu hnuNu.

(29) œhuf ytRxblt MvuNeVefuNl ybœtJtœ Bgwrlrmvj ftuvtuohuNlltk bkswh &guj <&t btLg htFuj

MvuNeVefuNl Nh<tu bwsc hnuNu su ytRxbbtk MvuNeVefuNl l ntug <uJt mkstudtubtk

yuze.mexe.yuLSlegh©eltu rlKog ytFhe hnuNu.Jtuxhekd fhJtbtk lrn ytJu fu œhhtus J^thtltu zucheÍ

WvtzJtbtk lrn ytJu <tu ftuLx[tfxhlt Fauo ylu sutFbu Jdh ltuxemu Jtuxhekd fhtJJtbtk <&t zucheÍ

WvtzJtbtk ytJNu ylu cejbtk&e hfb ftve juJtbtk ytJNu.

(30) juch JuÕVuh Vkz btxu ntjbtk htsg mhfth©eyu fhuj nwfb bwscle hfb cejbtk&e ftve juJtbtk ytJNu.

(31) atubtmtltu vehegz <t.15 swl &e 14 ytufxtuch Mþ^eltu dKJtbtk ytJNu. yt mbg œhBgtl ftuLx[tfxh

îtht ftbdehe fhe Nftg <ub l ntug <tu <u Bþscle xtEb jebex J^the ytvJtbtk ytJNu.

(32) muÕm xuût / Jux lkch / ve.yuV. ftuz lkch / vtl lkch / S.yum.xe. lkch rJduhu ftuLx[t¾xhu VhSgt<

(33) ltbœth ftuxo îtht fhuj nwfb <ubs rlœuo»ttulwk awM<vKu vtjl fhJtlwk hnuNu. subtk z[ulus lu jd<tk ftb btk

ftuRvK mkkstudtubtk bNel ntuj / dxh btk btKmlu W<thJtu lnek <ubs buLgwyj M¾{uJSkd ykdule

btdoœrNoft lwk vtjl fhJwk.

(34) mœh xuLzhle ytRxbtult CtJtu ltKt Ft<t lt mhfgwjh lk.38, <t.21/11/22 <&t mûtb m•ttle b¤uj bkswhe bwsc GST rmJtg

dKºtebtk juJtbt ytJuj <&t «Jo<btl rlgb bwsc GST awfJJt vtºt &Nu <&t juJtbtk ytJuj ctfe CtJtu J»to 2023-24 lt S.yum.xe

meJtRlt yth.yuLz ce zeJeÍllt hux su Bgw.ftuvtuohuNlbtk bkswh &guj <u bwsc juJtbtk ytJuj Au. su&e <btb cezomu <u bwsc dK<he fhe

xuLzhtu ChJtlt hnuNu.

(35) mœh xuLzh yk<od<lt ftb mkjøl y.Bgw.ftu.btk vJo<btl <btb rlgbtu/mhfgwjhtu jtdw vzNu <ubs JF<tu JF< &lth mw^thtytu vK jtdw

vzNu. sule ltuk^ jR xuLzhtu ChJtlt hnuNu.

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(36) y.Bgw.ftu. ltk ltKt Ft<tk îtht RlJzo lk. 4416 <t.20/12/2025 &e b¤uj mwalt bwsc Mxu. frbxe

<t.27/11/2025 ltk mwal «btKu ßgtk 50% hemtgfjucj çjtuf JtvhJtbtk l ytJ<t ntug, <ulwk cej

bkswh fhJtbtk lrnk ytJu. sule ftuLx[t¾xhu Ftm ltuk^ juJe.

37) mœh xuLzh yu.yth.me. «fthlw Au ytvlu mtukvJtbtkk yuxju fu ytv îtht ChJtbtkk ytJuj

ftbdehelt sÚ&t bwsc mbg bgtoœt lffe fhe su <u mûtbm<tle yjd yjd ykkœtsle bkkswhe

bégu&e Jfo ytuzoh ytvJtbtkk ytJNu ylu mbg bgtoœtbtkk ftbdehe vqKo fhJtlw awM< vKu vtjl

(38) mœhnw ftbbtkk Jtuzobtkk sYhegt< bwsc ytuAtbtkk ytuAe xuLzhle Nh< bwsc bkkswh &lth xuLzh vife

yjd yjd ykkœtsle bkkswhe bu¤JJtbtkk ytJ<e ntuR, ytuAtbtkk ytuAe yuf mt&u œN søgtyu

sYhegt< bwsc ftbdehe NY fhJtle Nh<u ylu <u «btKu bulvtJh, bNelhe, bxehegÕm <ubs

ltkkKtfeg studJtRle vwh<t «btKbtkk ÔgJM&t fhe su <u xuLzhhu xuLzh Cgto vqJuo ytdtu<Y

ytgtuslle <igthe mt&u ftbdehe fhJtle &tg Au.

yufhthlwk Vtubo

(1) nwk/ybu yt&e yufhth fhwk Awk/fheyu Aeyu fu yt xuLzh hsw fh<tk vnujtk buk/ybu M&¤le bwjtft<

je^e Au ylu ftblu jd<t btjmtbtl, bswhe ylu ceS ctc<tulu jd<e M&trlf vrhrM&r<le

ò<-btne<e bu¤Je Au.

(2) nwk/ybu yt&e yufhth fhwk Awk/fheyu Aeyu fu yt ftuLx[tfxhtule Nh<tu rJd<tu ylu xuLzhlu jd<t

>M<tJustu ft¤SvwJof yÇgtm fgtuo Au ylu <u bwsc <ultu ybj fhJt mkb< Awk/Aeyu.

ftuLx[tfxhle mne ylu rmfft

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TECHNICALSPECIFICATIONS:

bæg Ítul œrhgtvwh Jtuzobtk mtkmœ mÇg§e, ^thtmÇg§e <Útt ftWLmejh§e lt csuxbtk&e swœe swœe søgtytuyu vtKele jtRl <ubs

zu[lus jtRl ltFJtlt ðgthctœ lJt htuz cltJJtlt ftb ctc<.(yu.yth.me. xuLzh)

FollowingtechnicalspecificationsshallbeapplicabletotherelevantitemsofBOQ

TECHNICALSPECIFICATIONCON

Sr. Sub- Items PageNo.

1. DetailsSpecificationsofMaterial

2. 1 Excavationforpipelinetrenches

3. 2 Backfilling

4. 3 Shoringandstrutting

5. 4 Dewatering

6. 5 ExcavationofAsphaltpavementandReinstatementofpavement

7. 6 JunctionMachinehole,ScraperMachineholeandFRC

MachineholeSeat&Cover

8. 7 ConcreteWork

9. 8 DoubleWallCorrugated(DWC)HDPEPipes

10. 9 DuctileIronPipeandFittings

SluiceValves,AirValve&ElectroMagneticflowmeasuringsy

12. 11 PVCSWRPipe

14. 13 MDPEPipe&HouseConnection

15. 14 ReinforcedcementconcretepipesSocket&spigot

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16. 15 GeneralBuildingWorks

17. 16 AdditionalSpecificationsforBuildingandalliedworks

18. 17 PlumbingSystem

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DETAILSSPECIFICATIONOFMATERIAL

Watershallnotbesaltyorbrackishandshallbecleanreasonablyclearandfree from objectionable quantities

of silt and tract ofoil and injurious alkalis,

salts,organicmaterandotherdeleteriousmaterialswhichwilleitherweakenthemortar or

concrete or cause efflorescence of attach the steel in R.C.C. Container fortransport,

storage and handling of water shall be clean. Water shall conform to the standards

specified in I.S. 456-1978.

If required by the Engineer-in-charge it shall be tested by comparison with distilled water.

Comparison shall be made by means of standard cement tests for soundness, time of

setting and mortar strength as specified in I.S. 269-1976. Any indication of

unsoundness,changeintimeofsettingof30minuteseithermoreordecreaseof more than

percent in strength of mortar prepared with water sample when comparedwith the

results obtained with mortar prepared with distilled water shall be sufficientcause

for rejection of water under test.

Water for curing mortar, concrete or masonry should not be too acidic and also nottoo alkaline.It

shall be free of elements which significantly affect the hydration

reactionorotherwiseinterferewiththehardeningofmortarorconcreteduring curing or

those which produce objectionable stains or other unsightly deposits on concrete or

mortar surfaces.

Hardandbitterwatershallnotbeusedforcuring.

Potable water will be generally found suitable for curing mortar for preparing or concrete.

CementshallbeOrdinaryPortland,OrdinaryPortlandcementasperI.S.269-1976 or Portland slag cement

as per I.S.455-1976.or Sulphate Resistant Cement as per IS- 12330 latest Revision.

TestingofCement: It should be specificallynotedthatthe cementbroughtby the contractor at site of

work shallbeused afterthesame is tested at the approved

laboratoryasperthedirectionoftheEngineer-in-charge.Suchapproved

laboratorymaybelocatedatAhmedabad.Allthechargesfortransportandtesting of the

samples shall have to be borne by the contractor. The frequency of testing of such

materials shall be in accordance to the relevant Indian standard as directed bythe

Engineer-in-charge.

Sandshallbenaturalsand,clean,wellgraded,hardstrong,durableandgritty particles free from injurious

ofdust, clay, kankar nodules,softor flaky particles shale, alkalisalts, organic matter,

loam, mica or other deleterious substances andshall be got approved from the

Engineer-in-charge. The sand shall not contain more than 8 percent of silt as

determined by field test.If necessary the sand shall bewashed to make it clean.

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Thefinenessmodulusofcoarsesandshallnotbelessthan2.5andshallnotexceed

3.0.Thesieveanalysisofcoarseshallbeasunder:

I. S. Sieve Percentage by I. S. Sieve Percentage by

Designation weightpassing Designation weight passing

sieve throughsieve.

Thefineness modulusshall not exceed 1.0.Thesieveanalysisof finesand shall be as

I. S. Sieve Percentage by I. S. Sieve Percentage by

Designation weight passing Designation weight passing

through sieve through sieve.

4.75mm 100 600Micron 40-85

2.36mm 100 300Micron 5-50

Gritshall consist ofcrushed or broken stone and be hard, strong dense, durable,clean, of proper

gradation and free from skin or coating likely to prevent proper adhesionofmortar.Grit

shall for aspossible flaky elongatedpiecesshallbe avoided.

It shall generally comply with the provisions of I. S. 383-1970. Unless special stoneof

particular quarried is mentioned.Grit special stone of particular quarries is

mentioned.Gritshallbeobtainedfromthebestblacktraporequivalenthardstone

asapprovedbytheEngineer-in-charge.Thegritshallhavenodeleterious reaction with

Thegritshallconformtothefollowinggradationaspersieveanalysis:

I. S. Sieve Percentage passing I. S. Sieve Percentage Passing

Designation through sieve Designation through sieve

The crushing strength of grit will be such as to allow the concrete in which it is usedto build up the

specified strength of concrete.

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The necessary tests for grit shall be carried out as per the requirements of I. S. 2386 (Parts I to VIII)

1963, as per instruction of the Engineer-in-charge. The necessity of test will be

decided by the Engineer-in-charge.

M-5A STONECOARSEAGGREGATEFORNOMINALMIXCONCRETE:

5A.1 Coarse aggregateshallbeofmachinecrushed stoneofblack trap orequivalentand

behard,strong,dense,durable,cleanandfreefromskinandcoatinglikelyto prevent proper

adhesion of mortar.

5A.2 Theaggregateshallgenerallybecubicalinshape.Unlessspecialstonesof

particularquarriesarementioned,Aggregatesshallbemachinecrushedfromthe best black

trap or equivalent hard stone as approved. Aggregate shall have no deleterious

reaction with cement.The size of the coarse aggregate for plain cement concrete and

ordinary reinforced cement concrete shall generally be as per the table given below.

However in case of reinforcement cement concrete the maximum limit may be

restricted to6 mm less than the minimum lateral clear distance between bars of 6 mm.

less than the cover whichever is smaller.

I.S. Sieve PercentagePassing for I.S. Sieve PercentagePassing for

Designationsinglesizedaggregates Designation singlesizedaggregates

ofnominalsize ofnominalsize

NOTE :- ThepercentagemaybevariedbytheEngineer-in-charge whenconsidered

necessary for obtaining better density and strength of concrete.

5A.3 The grading test shall be taken in the beginning and at the charge of source of

materials.ThenecessarytestsindicatedinI.S.383-1970I.S.456-1978shallhave

tobecarriedouttoensuretheacceptability.Theaggregatesshallbestored separately and

handled in such a manner as to prevent the inter mixed on different

aggregates.Iftheaggregatesarecoveredwithdust,theyshallbewashedwith water to make

M-5B BLACKTRAPOREQUIVALENTHARDSTONECOARSE:

5B.1 Aggregate for Design Mix concrete : Coarse aggregate shall be of machine crushed

stoneofblacktraporequivalenthardstoneandbehard,strong,dense,durable cleanand free

from skin and coating likely to prevent proper adhesion of mortar.

5B.2 Theaggregatesshallgenerallybecubicalinshape.Unlessspecialstonesof

particularquarriesarementioned,aggregatesshallbemachinecrushedfromthe best, black

trap or equivalent hard stones as approved.Aggregate shall have no deleterious

reaction with cement.

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5B.3 ThenecessarytestsindicatedinI.S.383-1970andI.S.456-1978shallhavetobe carried out to

ensure the acceptability of the material.

5B.4 Ifaggregateiscoveredwithdustitshallbewashedwithwatertomakeitclean.

The bricks shall be hard or machine moulded and made from suitable soils and kiln burnt. They shall

be free from cracks and flaws and nodules of free lime.The shall have smooth

rectangular faces with sharp corners and shall be ofuniform colour.

The bricks shall be moulded with a frog of 100 mm x 40 mm and 10 mm to 20 mm

deep on one of its flat sides. The bricks shall not break when thrown on the ground

from a height of 600 mm.

Thesizeofmodularbricksshallbe190mmx90mm.

The size of the conventional bricks shall be as under : 3" 3"

Onlybricksofonestandardsizeshallbeusedononework. Thefollowing

tolerance shall be permitted in the conventional size adopted in a particular work.

Length : =1/8" (3.0 mm)Width : = 1/16" (1.50 mm)

Height:=1/16"(1.50mm)

The crushing strength of the bricks shall not be less than 35 Kg/Sq.cm.The average water absorption

shall not be more than 20 percent by weight. Necessary tests for

crushingstrengthandwaterabsorptionetc.shallbecarriedoutasperI.S.3495 (Part-Ito IV) -

M-6A FLY-ASHLIMEBRICKS:

The fly ash lime bricks shall conform to Grade-1 or Grade-2 of IS-3812-1981.The

frog of the 80 to 100 mm x 40 mm x 10 to 20 mm size.

Thesizeofmodularbricksshallbe190mmx90mmx90mm.

Thesizeofconventionalbrickshallbe225mmx110mmx75mm.

Only bricks of one standard size shall used on one work.The following tolerances

shall permitted in the conventional size adopted in a particular work:

Width: + 3 mm Height

Thephysicalcharacteristicofbricksshallbeasfollows.

Theminimumcompressivestrengthofflyashlimebricksshallnotbelessthan75 Kg/Sq.Cm.

and the test shall be conform to IS-3495 (Part-I):1992.

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Theaveragedryingshrinkageofthebrickwhentestedbythemethoddescribedin IS 4139-

1989 being shall not exceed 0.15 percent.

Theaverageswaterabsorptionnotmorethan20percentagebymassandthetest shall

conform to IS-3495 (Part-3):1992.

Mild steel bars reinforcement for R.C.C. work shall conform to I.S. 432 ( Part-II ) 1966 and shall be

tested quality.It shall comply with relevant part of I.S.456-1978.

All the reinforcement shall be clean and free from dirt, paint, grease, mill scale or loose of thick rust

at the time of placing.

Forthepurposeofpaymentthebarshallbemeasuredcorrectupto10mmlength and weight payable worked

out the rate specified below :

1.6mm 0.22Kg./Rmt. 8. 20mm 2.47Kg./Rmt.

2.8mm 0.39Kg./Rmt. 9. 22mm 2.98Kg./Rmt.

3.10mm 0.62Kg./Rmt. 10. 25mm 3.35Kg./Rmt.

4.12mm 0.89Kg./Rmt. 11. 28mm 4.83Kg./Rmt.

5.14mm 1.21Kg./Rmt. 12. 32mm 6.31Kg./Rmt.

6.16mm 1.58Kg./Rmt. 13. 36mm 7.31Kg./Rmt.

7.18mm 2.00Kg./Rmt. 14. 40mm 9.86Kg./Rmt.

TMTFE-500STEELBARSFORREINFORCEMENT:

Reinforcement bars shall conform to IS-432, IS-226 or IS-1786 with its latest amendment and welded

wire fabrics to IS : 1566.Only TMT bars for reinforcementin RCC duct shall be used

which shall be clean, free from pitting, oil, grease, paint, loosemill scale, rust, dirty

dust or any other such substance that will destroy orreduce bond.

ItpermittedbytheEngineer-in-chargereinforcementshallbedoneinaccordance with IS-

2751 or IS-9147 as applicable.

Other provision and requirements shall conform to specification No. M-7 for mild steel bars.

MILDSTEELBINDINGWIRE:

The mild steel wire shall be of 1.63 mm or 1.22 mm (16 or 18 gauge) diameter and shall conform to

The useofblack wire will bepermitted forbinding reinforcement bars. It shall be free from rust, oil

paint grease, loose mill scale or any other undesirable coatingwhich may prevent

adhesion of cement mortar.

STRUCTURESTEEL:

AllstructuralsteelconformtoI.S.226-1965.Thesteelshallbefreefromthe defectsmentionedinI.S.226-

1975andshallhaveasmoothfinish.Thematerial

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shallbefreefromloosemillscale,rustpitsorotherdefectsaffectingthestrength and

durability. Rivet bars shall conform to I.S. 1148-1973.

Whenthesteelissuppliedbythecontractortestcertificateofthemanufacturers shall be obtained according

to I.S. 226-1975 and other relevant Indian Standards.

Theshuttering shallbe either ofwoodenplanking of30mm.minimum thickness

withorwithoutsteelliningorofsteelplatesstiffenedbysteelangles.The shuttering shall be

supported on battens and beams and props of vertical ballies properly cross braced

together so as to make the centering rigid.In places of bullie props, brick pillar of

adequate section built in mud mortar may be used.

The form work shall be sufficiently strong and shall have camber, so that it assumes

correctshapeafterdepositionoftheconcreteandshallbeabletoresistforces caused by

vibration of live load of men working over it and other incidental loads associated

with it.The shuttering shall have smooth and even surface and its joints shall not

permit leakage of cement grout.

Ifatanystageofworkduringorafterplacingconcreteinthestructure,theform sags or bulges out beyond the

required shape of the structure, the concrete shall be removed and work redone with

fresh concrete and adequately rigid form work. The complete form work shall be got

inspected by and got approved from the Engineer-in-charge,before thereinforcement

bars are placed in position.

Thepropsshall consist ofbullieshaving 100 mmminimum diameter measured at mid length and 80 mm

at thin end and shall be placed as per design requirement.These shall rest squarely on

wooden sole plates 40 mm thick and minimum bearing area of0.10 Sq.m. laid on

sufficiently hard base.

Doublewedgesshall further beprovided betweenthe soleplate and the wooden props so as to facilitate

tightening and easing of shuttering without jerking the concrete.

Thetimberusedinshuttering shallnotbesodryastoabsorbwaterfromconcrete and swell or bulge nor so

wet to shrink after erection. The timber shall be properly sawn and planned on the

sides and the surface coming in contract with concrete. Wooden form work with metal

sheet lining or steel plates stiffened by steel angles shall be permitted.

Asfaraspracticable,clampsshallbeusedtoholdtheformstogetheranduseof nails and spikes avoided.

The surface of timber shuttering that would come in contact with concrete shall be wellwettedand

coatedwithsoapsolutionbeforetheconcreting isdone. Alternatively coatof raw

linseedoilor oilof approved manufacturemay be applied in place of soap solution.

Incaseof steel shuttering either soap solution or rawlinseed oil shall be applied after

thoroughly cleaning the surface. Under no circumstances black or burnt oil shall be

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Theshutteringfor beamsandslabs shallhavecamber of4mmper meter (1in250) or as directed by the

Engineer-in-charge so as to offset of subsequent deflection for cantilevers the camber

at free end shall be 1/50 of the projected length or as directed by the Engineer-in-

The Hard drawn steel wire should confirming to IS-432 (Part 2), Hard drawn steel

wireshall be manufacture and its chemical composition should be as per para

3.0.Thefinishedwireshouldbe free fromdefectsandfinishedin aworkmanlike

manner.Nominal sizes, Tolerances, Physical requirements are as per IS : 432 (Part-

II)latest edition.Hard drawn steel wire should be tested as specified in IS : 432 (Part-

II) latest edition.

Note : AlltheB.I.S.mentionedaboveshallbewithitslatestadditionaswellas amendment.

:EXCAVATIONFORPIPELINETRENCHES

Anysoilwhichgenerallyyieldstotheapplicationofpickaxesandshovelsor jumpers or scarifies phawaraa

rakes or any such excavating implement or organicsoil, gravel, silt, sand, tuff loam,

clay, peat etc., fall under this category.

CLEARINGOFSITES:

The site on which the drain is to be laid as shown on plan and the area required for

settingoutandotheroperationshallbeclearedandallobstructions,loosestones and

materials, rubbish of all kinds, stumps, brushwood as well as all trees, shall be

removed as directed.The roots shall be entirely grubbed up.

The products of the clearing to be stacked in such a place and in such a manner, as directed by the

Engineer-in-charge.

In Jungle clearings, all trees not specially marked for preservation, bamboos, Junglewood and

brushwood shall be cut and their roots grubbed-up. All wood and material from the

clearing shall be the property of AMC and shall be arrangedas directed the AMC

Engineer or hisauthorised agent. The materials found to

beusefullybytheEngineerwillbeconveyedandproperlystackedasdirectedwithin the

specified limit. Useless materials will be burnt or otherwise disposed off as directed,

by the Engineer-in-charge.

All holes or hollows, whether originally existing or produced by drawing-up roots, shall be carefully

filled up with earth, well rammed and leveled off, as may be directed.

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All the centre line of drain trenches shall be given by the Engineer-in-charge and it will be the

responsibility of the contractor to install substantial referencemarks, bench marks etc.

and maintain them as long as required true to line, level, curve & slopes. The

contractor shall assume full responsibility for alignment, elevation and dimensions of

each and all parts of the work.The labour, materials etc. required for

settingoutandestablishingbenchmarksandotherreferencemarksshallbe arranged by the

contractor at his own cost.

The excavation for the drain trenches shall include removal of all materials of whatsoever nature and

whether wet or dry, necessary for the laying of pipe lines and sub-

structureexactlyinaccordancewithlines,levels,gradesandcurvesshownon the plans L-

sections or as directed by the Engineer-in-charge.Trenches shall be

excavatedtotheexactwidthatoflowestportionofthetrenchandthesideslopes as (1:0.5).The

contractor shall notify the Engineer before starting excavation to enable him to take

cross sectional levels for purpose of measurementsbefore the ground is disturbed.

Excavation shall be carried out in stratas specified in item of schedule `B'. The

liftwillbealsoasspecifiedinSchedule`B'.Tunnelingincaseoflayingofdeep sewers in place

of open excavation shall be allowed up to 2 metre length with the permission by the

Engineer-in-charge. Contractor shall, as far as possible avoid tunneling at the joints of

pipes. In such case, the levels and gradients of drain to belaid shall be properly

attained and shall be got thoroughly checked by the contractor through the Engineer-

in-charge.Payment of tunneling shall be made as per the

rateforopenexcavationincludingdewateringetc.asmentionedintheitem specification.No

deduction or extra payment shall be made in case of tunneling. Excavated material

shall be stacked at a minimum distance of 1.5 meters away from the edge of the trench

or as directed. Sight rails and boning rods shall be used for checking the gradients of

bed or trenches. Before the trench excavation is started,sight rails made of good

timber shall fixed truly vertical at a uniform height, abovethe invert as per the

instruction of the Engineer-in-charge.The centre line shall be clearly marked on the

sight rails.Depth of excavation shall be checked by boning

rodsofsuitablesizeandlengthasperinstructionsoftheEngineer-in-charge.All

thesightrailsshallbepainted alternatively withtwodifferentcolourssoasto provide better

The bottom of the trenches shall be leveled both longitudinally and transversely or stepped as

directed by the Engineer.The contractor shall, at his own cost, remove

suchportionofbouldersorrock,asrequiredtomakethebottomofthetrench level. No filling

shall be allowed to being the bottom of the trench in level. If by contractor's mistake,

Excavation is made deeper that shown on theplan ordered bythe Engineer, the extra

depth stuff duly watered and rammed as directedby the Engineer as at the cost of the

contractor.All rock or other hard foundation shall be cleared off, all soft and loose

material cut to a firm surface, either level, stepped as directed by the Engineer. The

Engineer may order such changes in the dimensionsand elevation of bottom of

trenches and may be deemed necessary to secure satisfactory laying ofpipelines.The

contractor shall at his own expense, make provision for all pumping, dredging bailing

out of draining water and the trenchesshall be kept free of water, during construction

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After each excavation is completed, the contractor shall notify the Engineer to that effect and no

trench will be allowed to be filled up until the Engineer or

hisauthorisedagentapprovedthedepthsanddimensionsofexcavationandthenature of the

strata met with and the level and/or measurements are recorded.

The work measured shall be maintained till completion and in case of collapse ofsides or bottom of

trenches due to any reasons, it shall be made good without anyextra cost.

Thedraintrenches,shallbestrongly fenced and redlightsignalsshallbekeptat night in charge of

watchmen to prevent accidents.Sufficient care and protective measure shall be taken

to see that the excavation shall not affect or damage the

adjoiningstructure.Thecontractorshallbeentirelyresponsibleforanyinjuryto

lifeanddamagetothepropertiesetc.Necessaryprotectionworksuchasguide ropes,crossing

places, barricades, caution Boards etc. shall be provided by the Contractor. The

wooden planks for crossing trenches by public as per requirement shall be provided by

the contractor without any extra cost.

ADDITIONALREQUIREMENTS:

Atthejointsdrainthetrenchshallbeexcavatedtoanadditionaldepthof15cms. and width of 30 cms.

andlength of 15 cms. beyond the edge of collar on boththe sides or as directed by

Engineer-in-charge. The rate includes for such extraexcavation made at the joints.The

trenches shall be excavated perfectly in straight

line.Thebottomoftrenchshallbekeptasperinvertlevelorasdirected.In

obtainingformationonthebottomtrench,theusualmethodofsightrailsand

boningrodsshalladopted.Thecontractorshallhavetoprovideandfixand maintain sight

rails and boning rod without any extra cost.

If contractor fails or makes delay to give the hydraulic test of the pipe line laid lineany of the section,

without any genuine reasons, he shall be responsible to get

reexcavateanypartofthelengthoftrenchesrefillinsuchcase(i.e.beforetesting

forsafetyofpedestrianand/orvehiculartraffic)asfoundnecessarybethe Engineer-in-

charge without any extra cost, if found necessary and as directed by the Engineer-in-

charge.The contractor shall have to excavated the refilled trenches, during hydraulic

test without any extra cost.

In case of excavation across a road, permission of road authorities shall have to be

obtained.Atallroadcrossings,trenchesshallbeexcavatedonlyforhalfwidthof the road and

pipe shall be laid. The other half shall be excavated only after backfilling over the laid

pipe line making it suitable forthe traffic. The contractor shall provideddiversion when

the pipe line is to be laidalong the road as required andshall maintain the diversion or

any part ofit, of damaged without any extra cost. Atall road crossings, the pipe shall

be laid below the crust of the road.

The contractor shall break the road surface by Excavation of chiseling to the exact width and length

as shown on the drawing or as directed by the Engineer-in-charge. Separateprovision

foradditionallabour in breaking,removing ofpavement ismade

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andunderthisitemquantitiesofexcavationshallbeincludingdepthofsuch pavement

The excavated stuff shall be deposited in uniform layers to avoid mixing with other kind ofmaterials

at no objectionableplace or as directed by theEngineer-in-charge.

Thecontractorshallhaveto makehisown arrangementsfortaking trial pitsetc.at hisown cost, as directed

by the Engineer-in-charge.

If necessary, temporary arrangements shall have to be made to divert or conveyacross all natural

water ways or build up drains etc. without any extra cost.

All water pipes, cables, any structure shall be protected by the contractor as directed by the Engineer-

in-charge, if met during excavation. Any damage caused shall be rectified without any

Breaking ofbrick structures/R.C.C. works, cement concrete etc. coming

inexcavationshallbeconsidered asexcavationinstratashownin theitem, asabove and will

be paid at the same rate.

AllsafetyprecautionsshallhavetobemadebytheContractorincludingshoring and strutting.

The excavation in narrow streets, lanes shall have to be carried out with full precautions so as that no

property may be damaged. Any compensation to be paid to the other party will be

paid by the contractor for which the AMC will not be responsible.

Allobstacles, structures etc. shallberemovedandmade good without further claim or extra cost.

CLASSIFICATIONOFSTRATA:

The decision regarding classification of strata shall rest with the Engineer-in-charge and his decision

shall be final and binding to the contractor.

Allthematerialsencounteredintheexcavationshallbeclassifiedasunder.

All sorts of soil, sand, gravel and other similar soft and loose materials these will include all materials

of an earthy or sandy nature which can be easily ploughed or

smallshingleandgravelwhichcanbeeasilyremovedofshallbouldersnot exceeding

Cu.m. or 30 litres (about one Cft.) occurring in such strata will be included in the rate

This shall include materials which can be easily removed with the shovel after loosening with a pick.

This shall include all kinds of disintegrated rock or shale or inundated clay from

boulders,largerthat0.30Cu.m.or30litres(aboutoneCft.)andwhichcanbe

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removed with pick and shovel though not without some difficulty any which do

notrequire blasting.

HardMurrumandBoulders:

This shall include all kinds of disintegrated rock or shale or inundated clay interspersed with boulders

less than half (0.5) a cubic meter (about half Ci.cft.) and large than 0.30 Cu.m. or

litres (approx. one Cft.) which do not normally required blasting and can be removed

with pick, bar wedge and hammer.

Bouldersbiggerthan0.5Cu.m.willbepaidforassoftorhardrockaccordingtoas it is soft or

This shall include all materials which is rock or hard conglomerate, all decomposed and watered

rock, highly fissured rock, old masonry and also soft rock bouldersbigger than

Cubic meter and other verities of rock which do not require blasting and which can be

removed with rock, crow bars, wedges and hammer with some difficulty.

HardRock(Blasted)

This shall include all rocks, occurring in masses which could best be removedblasting and where in

the opinion of the Engineer, blasting is necessary and is permissible.

HardRock(Chiseled,WedgeorLineDrilled)

This shall include all rock, occurring in masses or boulders bigger than half cubic meter size each,

which can best be removed by blasting but which owning to the proximity or

structures, possibility of shattering the rock below or for any other reasons should be

cut by means of cold chisels of wedges or line drilling.

This shall include laterite rock soft and hard which can be removed with hammer, chisels, crow or by

blasting.Latteritic murrum which has not hardened into stone shall be classified as

Theclassification of various,stratas met with during excavation will be decided by theEngineer-in-

chargeand his decision shall befinal and binding on the contractor.

Rock referred to abovewould include Besalt, Trap, Granite, Quartzite,Gneiss,laterite and other types.

The use of explosive in excavation will not be considered as a reason for other classification then the

above unless clearly necessary in the opinion of Engineer-in- charge.

DISPOSALOFEXCAVATEDSTUFF:

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The surplus excavated earth, after backfilling the trenches shall have to be removed from the site as

Aftercompactionandconsolidation,ifanyshortfallofearthisfoundthen contractor has to bring the same

to the required quantity in order to meet shortfall at his own cost. More over, if any

settlement of road after reinstatement is observed during thedefectliability period of

the work. Contractor shallbe fully responsiblefor thedefective work and patches /

depression / settlement shall be repaired with

quarryspoilormetalatcontractor'sowncost.Ifcontractorfailstorepairthe patches/

depression / settlement in time, AMC will repair it at all risk and cost of contractor.

Surplusearthshallnotbedisposedoffinawaythatleadstonuisancetothepublic or AMC.

Thesiteshouldbeclearedoffalldebriesoncompletionofwork.

MEASUREMENTANDPAYMENT:

The payment of a various classes of excavation, depending upon the depth of excavation, shall be

made at the unit rate per cubic meter for the quantity actually excavated and accepted

by the Engineer limited to dimensions shown in thesanctioned plans L-Sectionor as

directedby theEngineer. Excavationin excess of

thesanctioneddimensionsshallnotbemeasurednorpaidforandifsoorderedby the

Engineer. The contractor shall have to fill up the excess depth with selected excavated

stuff duly watered and rammed as directed by the Engineer-in-charge without any

extra payment to the Contractor.

Dimension shall be measured correct to two places of decimals of a meter and individual quantity

shall be calculated to two places of decimals ofa cubic meter.

Theratefortheitemofexcavationshallinclude(Unlessandotherwisementioned).

(a) Clearingofsite.

(b) Settingoutworkincludingallmaterialsandlabour.

(c) Refillingthepipelinetrenches.

(d) Lightcompactionofbottomofthetrenchifrequired.

(e) Excavation&removal,sortingandstackingofallexcavatedstuffasdirected.

(f) Necessary protection arrangements including labour, materials equipment etc.to

ensuresafety and protection against risk or accident.

(g) Providingfacilitiesforinspectionandmeasurementsatanytimebythe concerned

(h) Compensationforinjurytolifeanddamagetopropertyifcausedduring progress of

(g) Nostackingofexcavatedearthwillbeallowedontheroadduringthe

execution.Thecontractorwillhavetocarttheearthtodesignatedstacking

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plot to be arranged by the contractor and will have to be re-cart the back fill

material after laying and jointing of pipe is completed.No extra payment for

carting and re-carting will be made and this shall be deemed to be part of item

for excavation i.e. item no. 1 & 9 of bill of quantities.

The measurement of item shall exclude the quantity of excavation carried out for Machinehole.

Penalty for no barricading shall be Rs. 200 per Rmt.In case the contractor does not

provided barricading and other safety measures.The same shall be carried out by

AMC at risk and cost of contractor.1.5times the actual cost incurred shall be

AllfillmaterialwillbesubjecttoEngineer’sapproval.IfanymaterialisrejectedbyEngineer,contractorshallremov

ethesameforthwithfromthesiteatnoextracosttotheowner.Surplusfillmaterialshallbedeposi

ted/disposedoffasdirectedbyEngineerafterthefillworkiscompleteduptoadistanceof5Kmfor

whichseparatepaymentwillbepaidunderthecorrespondingitem.

Noearthfillshallcommenceuntilsurfacewaterdischargesandstreamshavebeenproperlyinterceptedorother

wisedealtwithasdirectedbyEngineer.

Totheextentavailable,selectedsurplussoilsfromexcavatedmaterialsshallbe used as backfill.Fill material

shall be free from clods, salts, sulphates, organic or other foreign material.All clods of

earth shall be broken or removed.Where

excavatedmaterialismostlyrock,theboundersshallbebrokenintopiecesnot larger than

150 mm size, mixed with properly graded fine material consisting of murrum or earth

fill up the voids and the mixture used for filling.

Ifanyselectedfillmaterialisrequiredtobeborrowed,Contractorshallmakearrangementsforbringingsuchmate

rialfromoutsideborrowpits.Thematerialand

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sourceshallbesubjecttopriorapprovalofEngineer.Theapprovedborrowpitareashallbecleare

dofallbushed,rootsoftrees,plants,rubbishetc,topsoilcontainingsalts/sulphateandotherfore

ignmaterialshallberemoved.Thematerialssoremovedshallbeburntordisposedoffasdirected

byEngineer.Contractorshallmakenecessaryaccesstoborrowareasandmaintainthesame,ifsu

chaccessroaddoesnotexist,athiscost.

FILLINGINPITSANDTRENCHESAROUNDFOUNDATIONSOFSTRUCTURES,WALLSETC.

Assoonastheworkinfoundationshasbeenacceptedandmeasured,thespacesaroundthefoundations,structur

es,pits,trenchesetc.shallbecleanedofalldebris,andfilledwithearthinlayersnotexceeding20c

m,eachlayerbeingwatered,rammedandproperlyconsolidated,beforethesucceedingoneisla

id.EachlayershallbeconsolidatedtothesatisfactionofEngineer.Earthshallberammedwithap

provedmechanicalcompactionmachinesifinstructed.Usuallynomanualcompactionshallbea

llowedunlessEngineerissatisfiedthatinsomecasesmanualcompactionbytamperscannotbea

voided.ThefinalbackfillsurfaceshallbetrimmedandleveledtoproperprofileasdirectedbyEngi

neerorindicatedonthedrawing.

FILLINGINTRENCHES

Filling in trenches for pipes and drains shall be commenced as soon as the joints of pipes and drains

have been tested and passed.The backfilling material shall be properly consolidated by

watering and ramming, taking due care that no damage is caused to the pipes.

Wherethetrenchesareexcavatedinsoil,thefillingfromthebottomofthetrenchtothelevelofthecentrelineofth

epipeshallbedonebyhandcompactionwithselectedapprovedearthinlayersnotexceeding8c

m;backfillingabovethelevelofthecentrelineofthepipeshallalsobedonewithselectedearthby

handcompactionorotherapprovedmeansinlayersnotexceeding20cm.

Incaseofexcavationoftrenchesinrock,thefillinguptoalevel30cmabovethetopofthepipeshallbedonewithfine

materials,suchasearth,moorumetc.Thefillingupofthelevelofthecentrelineofthepipeshallbe

donebyhandcompactioninlayersnotexceeding20cm.Alsothefillingabovethecentrelineofth

epipeshallbedonebyhandcompactionorapprovedmeansinlayersnotexceeding20cm.Thefill

ingfromalevel30cm.Abovethetopofthetrenchshallbedonebyhandorotherapprovedmecha

nicalmethodswithbrokenrockfillingofsizenotexceeding20cmmixedwithfinematerialasavail

abletofillupthevoids.

Fillingofthetrenchesshallbecarriedsimultaneouslyonbothsidesofthepipetoavoidunequalpressureonthepip

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GENERALSITEGRADING

SitegradingshallbecarriedoutasindicatedinthedrawingsandasdirectedbyEngineer.Excavationshallbecarrie

doutasspecifiedinthespecification.Fillingandcompactionshallbecarriedoutasspecifiedelse

whereunlessotherwiseindicatedbelow.

Ifnocompactioniscalledfor,thefillmaybedepositedtothefullheightinoneoperationandlevelled.Ifthefillhasto

becompacted,itshallbeplacedinlayersnotexceeding200mmandleveleduniformlyandcomp

actedasindicatedinbeforethenextlayerisdeposited.

Toensurethatthefillhasbeencompactedasspecified,fieldandlaboratorytestsshallbecarriedoutbyContractor

Fieldcompactiontestshallbecarriedoutatdifferentstagesoffillingandalsoaftertheentireheighthasbeencomp

leted.Thisshallholdgoodforembankmentsaswell.

Contractorshallprotecttheearthfillfrombeingwashedawaybyrainordamagedinanyotherway.Shouldanyslip

occur,Contractorshallremovetheaffectedmaterialandmakegoodtheslipathiscost.

Thefillshallbecarriedouttosuchdimensionsandlevelsasindicatedonthedrawingsafterthestipulatedcompacti

on.Thefillwillbeconsideredasincompleteifthedesiredcompactionhasnotbeenobtained.

IfspecificallypermittedbyEngineer,compactioncanbeobtainedbyallowingloadedtrucksconveyingfillorother

materialtoplyoverthefillarea.Evenifsuchamethodispermitted,itwillbeforcontractorofdemo

nstratethatthedesired/specifiedcompactionhasbeenobtained.Inorderthatthefillmayberea

sonablyuniformthroughout,thematerialshouldbedumpedinplaceinapproximatelyuniforml

ayers.Trafficoverthefillshallthenbesoroutedtocompacttheareauniformlythroughout.

Ifsospecified,therockasobtainedfromexcavationmaybeusedforfillingandlevelingtoindicategradeswithoutf

urtherbreaking.Insuchanevent,fillinglayersnotexceeding50cmsapproximately.Afterrockfill

ingthevoidintherocksshallbefilledwithfiner

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materialssuchasearth,brokenstoneetc.andtheareafloodedsothatthefinermaterialsfillupth

evoids.Careshallbetakentoensurethatthefinerfillmaterialdoesnotgetwashedout.Overthela

yersofilled,a100mmthickmixedlayerofbrokenmaterialsandearthshallbelaidandconsolidati

oncarriedoutbya12tonneroller.Nolessthantwelvepassesoftherollershallbeacceptedbefore

subsequentsimilaroperationsaretakenup.

FillDensity-deleted

Thecompaction,onlywheresocalledfor,inthescheduleofquantities/itemsshallcomply

withthespecified(StandardProctor/modifiedProctor)densityatmoisturecontentdifferingno

tmorethan4percentfromtheoptimummoisturecontent.Contractorshalldemonstrateadequ

atelyathiscost,byfieldandlaboratoryteststhatthespecifieddensityhasbeenobtained.

D.2.6.10.1Leadfordeposition/disposalofexcavatedmaterial,shallbeasspecifiedintherespectiveitemofwork.

Forthepurposeofmeasurementoflead,theareatobeexcavatedorfilledorareaonwhichexcava

tedmaterialistobedeposited/disposedoffshallbedividedintosuitableblocksandforeachofth

eblocks,thedistancebetweencenterlinesshallbetakenastheleadwhichshallbemeasuredbyt

heshorteststraightlineroutetakenbyContractor.Noextracompensationisadmissibleonthegr

oundsthattheleadincludingthatforborrowedmaterialhadtobetransportedovermarshyor‘ka

tcha’land/route.

MeasurementandPayment

No extra payment shall be madefor refilling The cost of backfilling is included inrate of excavation.

Penalty for improper watering and compaction will be Rs. 350/Tanker required and rent for roller @

Rs. 20 per sq.m.

In case the watering and compaction of the backfilled material is not as per the

specifications, AMC will carry out the same through own resources.A rate of Rs.350

per water tanker and Rs. 20 per sq.m. for rolling and compacting will berecovered

from the contractor.

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:SHORINGANDSTRUTTING

Thisitemis applicable only whenthetrench havingmorethan5.0mt.depthand if the sides of trenches

cannot be slopedor steppeddue to any reason and the Engineer-in-

chargefeelthenecessityforsafetyoftrenchandadjacentproperty and traffic.

TheContractor shouldhavetotakepreviousapprovalfrom Engineer-in-charge before

commencing this item.

Sheathing,planks,wales, struts etc. required for shoring and strutting shall be of approved quality

ofwoodorstructural steel as per requirements ofIS-3764-1966.

TheContractor before execution shall get approval of designof shoringfrom Engineer-in-

charge.Theshoringshallbeof sufficientstrengthto resist side

pressureandensuresafetyfromslipsandbelowandtopreventdamagetowork and to prevent

injuryto persons. It shall be removed after gettingpermission of Engineer-in-charge,

after all items for which it isrequired area completed. Shoring and strutting shall

conform to IS -3764 - 1966 or its latest version.

Thesheetingshallbeplacedagainstthesideoftrenchsothatlengthofeachpiece of sheeting is vertical. The

sheetingshall beheldsecurely in place against the

Walesbyensuringthatsheetingiskeptfirmlyplacedagainstthewallofthe

trench.Wherethetrenchisexcavatedinloose,sandyorsoftsoilorsoilwhich has been

previously excavated or soil which isunder hydrostaticpressure,each piece ofsheeting

shallbedriven into the bottom oftrench so hasto be firmly heldin place.

Wheretwoormorepiecesofsheetingareused oneaboveanother,thesheeting shallbe so arranged that the

lower piece of sheeting overlap the lowest Wales

supportingthepiecesofsheetingnextabovenextaboveit.Thesepiecesof sheeting shall

befirmly driven in to the soil and securely supported byWales and struts as the trench

is made deeper.

Thewalesshallbe supported parallel tothebottomorthe proposedbottomof thetrench. Eachwale

shallbesupportedon cleatsspliced tothesheathing or by

postssetonthewalesnextbelowitand inthecaseoflowestwaleon thebottom ofthe trench

itself. Where necessary, wedges may be provided betweena wale and

sheathingissupportstothatroughlyuniformsupportisgiventoallindividual pieces of

Struts shall be horizontal and at right angles to thewalesofsheathingsupported thereby. Struts shall be

cut totheproper length required to fit in tightly between

wales,wherenecessary,thestrutsshallbeheldsecurelyinplacebywedges,

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drivenbetweenstrutsandthewales.Strutsshallbeplacedoncleatssplicedor bolted to posts

supporting wales.

Thesizes and spacing of sheathing, wales struts and wedgesused forshoring and timbering for

different depth shall conformthe requirement of IS-3764-1966 or its latest version.

Theextra width of excavation that may be deemednecessaryfor thepurpose of shoring and strutting

will be under-stoodtobe covered in the rate for itemof shoring and strutting fordrain

The contractor shall have to make all the necessaryarrangements while removing shoring strutting.

However, if contractor fails to remove the shoring strutting safely, the AMC shall not

be responsible for any type of damages and contractor shall

havetobearallthecostforthesame andtheAMC shallnotpay any extrapaymentfor the

Shoring and strutting shall be close or open depending on the nature of soil and the depth of

trench.The type of shoring and strutting shall be determined by theEngineer in

charge.It shall be the responsibility of the contractor to take allnecessary steps to

prevent the sides of trenches from collapse.Engineer in charge should take guidance

from IS : 3764-1966 for designing the shoring and strutting arrangements and

specifying the profile of excavation.

The item includes all labours,materials, equipments,tools etc. complete forwhole the period for

satisfactory completion of the item.

No extra payment shall be given for shoring & strutting.The shoring & strutting is included in item of

No payment shall be made to any wood which has been left out by the contractorwhile removing the

shoring, strutting etc.

Thisspecificationcoversthegeneralrequirementsofdewateringexcavationsingeneral.

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All excavations shall be kept free of water.Grading in the vicinity of excavations

shallbecontrolledtopreventsurfacewaterrunningintoexcavatedareas.

ContractorshallremovebypumpingorothermeansapprovedbyEngineerany water

inclusive of rain water and subsoil water accumulated in excavation and keepall

excavations dewatered until the foundation work is completed and backfilled.

Sumpsmadefordewateringmustbekeptclearoftheexcavations/trenches required for

further work.Methodofpumpingshallbeapprovedby Engineer but any case, the

pumping arrangement shall be such that there shall be no movement of subsoil or

blowing in due to differential head of water during pumping.Pumping arrangements

shall be adequate to ensure no delays in construction.

Contractorshallvisitthesiteandcarryoutnecessaryteststoworkoutthecost. AMCwillnotberesponsible for

subsoilsurvey orany datagivenintender document.Contractor is deemed to have

inspected and examined the site and its

surroundingsandtohavesatisfiedhimselftothenatureofsitebeforesubmitting his tender.

When there is a continuous inflow of water and quantum of water to be handled is considered in the

opinion of Engineer, as large, well point system – single stage or

multistage,shallbeadopted.ContractorshallsubmittoEngineerhisschemeof well point

system including the stages, the spacing, number and diameter of well points,heads

etc.andthenumber,capacityandlocationofpumpsof approval. Unless separately

provided for in the schedule of prices the cost of dewatering shallbe included in the

item rate for excavation.

Dewateringisdeemedtohavebeenincludedintheunitratesquotedforexcavation.

: EXCAVATION OF ASPHALT PAVEMENTREINSTATEMENT OF

(A) EXCAVATIONOFASPHALTPAVEMENT

Under this item contractor shall demolish existing asphalt or WBM pavement metwith during laying

Onlyareaofpavementinterceptedinpipelayingshallbedemolished.Ifexcess area is demolished same

shall be reinstated by the contractor.

Demolished material like asphalt pavement lump and metal shall be

stackedseparatelyasdirectedbytheEngineer,sothatitcanbereusedindoingthe pavement

on completion of laying the pipe.

Work done to the extent of requirement for laying of pipeline and as perspecifications shall be

measured in sq.m. and paid at the tender rate.

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(B) REINSTATEMENTOFASPHALTPAVEMENT:

ThescopeincludesthereinstatementofasphaltPavementofdesignthicknesscrossingthesewe

Aftertheworkoflayingandjointingofpipelineiscompleted,theearthwork,murrumsurface,soi

lingandasphaltsurfacewillbereconstructedasperthedesignedthicknessasdirectedandusing

witholdmetallingmaterialforsolingandAnyextrametalrequiredshallbebroughttocontractor

atowncostthisincludesnecessaryexcavation,watering,consolidationusingexcavatedroadm

aterialslikespouls,metalsincludingcarting/recartingthematerial.

OnthepreparedsoilingsurfaceBUSGshallbecarriedoutwithNewblacktrapmetal,Keyaggregat

eBitumenasperMoRTHclause506.Thesurfacewillbemaintainedtilltheworkiscompleted.The

measurementwillbepaidonsquaremeterbasisforallthetypesofsurfacesconstructedincludin

Thepaymentforreinstatementofasphaltroadpaymentwillbemadeonsq.mt.basisoftheworkcarried

outasperthedesignanddirectionofengineer–in-charge

Penaltyforincompletereinstatementworkshallberecovered@1.5timestheactualexpenseincurredbyAM

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:JUNCTIONMACHINEHOLE,SCRAPERMACHINEHOLE&FRCMA

CHINEHOLESEATANDCOVER

WatershallconformtoM-1,CementConformtoM-3,Stonecoarseaggregateof 20 mm

nominal size shall conformtoM-12,Grit shallconformtoM-8, Steel reinforcement shall

conform to M-18-19. Flyash brick shall conform to M-15A, Cementmortar ofspecified

perportionshallconform to M-11.

Machinehole cover with frame of required size and weight shall be procured by the

TheMachinehole of different types and sizes as specified shallbe constructedin

sewerlineatsuchplaceandtosuchlevelsanddimensionasshownindrawingor as directed.

Excavation:-TheexcavationforconstructionofMachinehole including dismantling of

all types of roadssurfaceguarding, barricading,lightening the trenches,

dewateringifrequired, removingand replacing, shifting of telephone/electriccables,

pipe line etc. and all other safety provisions like shoringand struttingetc.till refilling of

trenchesandcompletionof Machinehole

construction,stackingofexcavatedstuffwithinthespecifiedlead,backfilling

ofselectedexcavatedearth, wateringand consideration etc. complete shall becarried

outas per relevant specification of Excavation.

Concretework:-ThebedconcreteinP.C.C.(1:4:8),benchingconcretefor channel in C.C.

(1:2:4) and RCC slab in (1:2:4) by volume with necessary centering and shuttering

work shall be provided.It should be placed deemed and or vibrated and cured as

directed by engineer in charge.

Allthereinforcement bars shall beaccurately placed inexact positionshownon the

drawings and shall be securely heldin position during placing of concrete by annealed

No. 1 binding wire not less than 1 mm is size and by using stay block ornnetal chair

spacers, metal hangers, supporting wires or other approved devicesit sufficientlyclose

intervals. Barsshallnotbe allowed to bag between supports nor

displacedduringconcreteofanyotheroperationofthework.Reinforcement afterbeing

placedinposition shall be maintained inacleancondition until completely embedded in

concrete. Special care shall be exercised to prevent any

displacementofreinforcementin concretealreadyplaced.Toprevent reinforcementfrom

corrosion, concrete cover shall be provided as indicated on drawings.

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Bars shall be bend cold to specified shape and dismensions or as directed, attainproper

raduis of bends, Bars shall not bebent or staightened in a manner that will injure the

materials.Bars bendduring transport of handling shall be straightened

beforebeingusedonthework.Unlessotherwisespecifiedformildsteel a`U' typehook at the

end of each bar shall inveriably beprovided to main reinforcement.

Incase which are not round and in case of deformedbars,the diametershallbe

takenasthediameterofcirclehavinganequivalenteffectivearea.Thecold

twistedsteelbarsshallbeusedorwithouthooksattheends.Deformedbars withouthooks

shall however, comply with relevant enchorage requirements.

Barscrossingeach other where required shallbesecuredby bindingwores (annealed) of

size not less than 1 mm insucha mannerthatthey do not slip over each other

atthetimeof fixing and concreting.

As far as possible bars of full length shall be used.Incase this not possible overlapping

of bars shall be done as directed. Theoverlaps shall be staggered for

differentbarsandlocatedatpointsalongthespanwhereshearnotbending moment is

Whenpermittedorspecifiedonthedrawingsjointsofreinforcementbars shall butt welded

so as totransmittheir full stresses. Welded joints shall preferably located atpoints

whensteel will not be subject to more than 75 percentofthe maximum permissible

stresses and welds so staggered that atany one section not more than 20 percent of the

rods are welded.It shallbeensured that no viods are left inweldingandwhen weldingis

done in two or three stages, previous surface shall becleaned properly. Ends of the

bars shall be cleanedofall loose scale, rust, grease, paint and other foreign matter

before welding. Only competent welders shallbe employed on the work.

BRICKMASONARYWORK:

Beforemasonaryis to be laid on concrete footing thetopof concreteshall be

cleanedandmoistened.ThecontractorshallobtaintheEngineer'sapprovalfor one

foundation, bed,before foundation masonary is started.

WettingofBricks : The brick required for masonaryshallbe theroughlywetted with

clean water for amount two hoursbefore useor as directed. The cassation of

bubbles,whenthebricksarewettedwithwaterisanindicationofthrough wettingof bricks.

Brickshall be laid in English bond unless directedotherwise. Halfor out bricks shall

not be used except whennecessaryto complete to bond. Closers in such case shall be

cut torequired size and used bear the ends of walls.

A layerof mortar shall be spread on full widthforsuitable lengthof the lower course,

each brick shall first beproperly beddedand set home by gently tamping with handle of

trowelof wooden mallet. Its inside face shall be flushed with mortar the

nextbrickislaid and pressed againit.Oncompletionof course,the vertical joints shall be

fully silled from thetop with mortar.

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The wall shall be taken up truly in plumb. All corners shallbe laidtrulyhorizontal and

all vertical jointshallbetruly vertical. Vertical joints in alternate course shall generally

be directly one over the other. The thickness of brick course shall be kept uniform.

Thebrickshallbelaidwithfromupwards.Asetoftoolscomprisingof

woodenstraightedges,monsoonspiritlevel,squarehalfmeterrub,andpins string and

plumb shall bekept on the site of work for frequent checking during the progress of

Both the faces of walls of thickness greater than 23 cms.shall bekept in proper place.

All the connected brick work shallbe keptnot more than one meter over the

restofthework.Wherethisisnotpossibletheworkshallberakedback accordingto

bond(andnotlefttoothed) at an anglenotstoperthan45 degrees.

Allfixtureslikepipeinletandoutlet,PVCsteps,Machineholecoverandframe etc. which are

required to be builtin wall shall be embeded in cement mortar.

Brickshallbeso laid that all joints shallnot exposed12mm.Thefacejointsshall

berakedoutasdirectedbyrakingtooldailyduringtheprogressofwork,when themortarinstill

green so asto provided key for plaster or ponting to bedone.

Forthefaceofbrickwork,plastering istobedonejoints shallberackedoutto

adepthnotlessthanthicknessofjoints.Thefaceofbrickworkshallbe cleanedandmortar

dropping removed on very sameday that brick work is laid.

Thesurfaceshallbecleanedofalldust,loosemortardroppings,tracesof

algaeafflorseenceandotherforeignmortarbywaterorbybrushing.Smooth surface shall

beroughenedby wire brushing of it is not hard any by backing if it is har.In

caseofconcretesurface, if achemicalretarderhasbeen applied to the

formwork.Thesurfaceshallberoughenedby wirebrushing andalltheresulting dustand

looseparticlescleanedoff andcareshallbe takenthatdoneofthe reerarders isleft

onthesurface.Trimmingofprojectionsonbrick/concrete surfacewherenecessary shall be

carried out togetaneven surface.

The workshallbesoakedbut only damped evenly beforeapplying theplaster.If the

surface become dry, suchareasshallbe moistened again.

Theplasterabout15x15cms.shallbefirstappliedhorizontallyand vertically at not more

than 2 metersintervals over the entire surface to serve asgauge. The surface ofthese

gaugesshallbetrulyin planeofthefinished plasteredsurface.Themortarshallthanbe

appliedinuniformsurfaceslightly more than the specified thickness, then broughttoa

truesurface be working a wooden straight edge reachingacress thegauges with small

upward and sideways movements at atime. Finally, the surface shall be finished off

true with a trowel of wooden float accordingly excessive trowelling of over working

the float shall be avoided. All cornersarrisesanglesandjunctions shallbe truly vertical

of horizontal as the casemay beandshallbe carefully finished.Roundingor chambering

conners, arrises junctions etc. shall be carried out with proper templates the size

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Cementmortarfor plaster shall be used withinhalfanhour afteradditionof

water.Andmortarforplasterwhichispartiallysetshallberejectedand removed forthwith

In suspending the work at the end of the day, the plaster shall be left out clean to the

linebothhorizontallyandvertically,whenrecommendingtheplastertheedgeof

theoldworkshallbescrapedclearandwettedwithcementputtybeforeplaster

isappliedtotheadjustmentareastoenablethetwotoproperlytogether. Plastering work shall

be closed at the end of theday on the body of the wall and nearer than 15 cm. to any

corners of arises.It shall not be closed on the body of features suchas

plasterbendsandcornicesnot atthecornersorarises. Horizontal joints in plaster work

shall not also occure on walls and copingsthese invariably leads to leakage.

Noportionofthesurface shall bedeftoutinitially to be packed uplatter on.

FIXINGOFPOLYPROPYLENESTEPSANDMACHINEHOLECOVER:

Duringtheconstruction of masonary wall oftheMachineholethe cement mortar of

required proportion shall be used for embedding thePoly propylene steps in the wall

masonary. Thespacingof stepsinthe masonaryshallbe300 mm centre to

centreinthestaggeredpositionin theverticaldirectionwithtwostaggered rawsat 385mm

centre to centre in thehorizontal direction the topof the

Machineholeshallnotbemorethan300mmabovethebenchingandthecentre line of

twostaggeredraws shallbe the centreline of the shorter side of Machineholeframe in

the roof of chamber.

Thedetailedspecificationsforthe"Polypropylenestepsasbelow:

The Polypropylene conforming to an ASTM D-4101, injection molded arounda

mm dia. IS 1786 grade Fe-500 steel reinforcingbar andshould meet the load required

225 Kg. as perIS-5455.The measurement should be as per attached drawing. The

tolerancein the length and width is +/- 5 mm and +/- 1 mm in thickness.The weight of

the steps should not be less than 0.900 Kg.

Unchequeredportionofthestepshallbeinsertedwiththeriskcementmortar during the

couse of masonary work soconstructed around the steps as to keep thestep on its right

position.The non-slip grap chequered portion of the steps shall be wellkept outside the

Duringfixingofthesteps,thewallshouldnotbedemagedandshallnotvibrate orshall not

shakeduringascentsanddecents otherwisetheyshall have to be refixed correctly

asperthe drawings or as mentioned above.

Machineholeframeshallbefirmlyandsecurelylaidontopofshaftsofconical

topsin25mmthickcementmortarandshallbeembededin200mmthe cement concrete of

proportion1:2:4(1 Cement : 2 coarse sand : 4 Kapchi as

aggregateof20mmnominalsize)insuchawaythatthetopofM.H.frameshall beflush

withconcretesurface and top surface neatlyfinished25mm thickwith cement mortar 1:3

in confirmity with ground orroad levels.

OTHERREQUIREMENTS:

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As perlineand level and size of the Machineholepitshallbe excavated as per drawing

or as ordered by the Engineer.

Thefoundationconcrete 1:4:8withrequired thicknessasper drawingor as directed shall

be laid after compacting the bottom ofthepit.The cement concrete

shallconformtospecified specification of Cement Concrete.

Theclearinsidechambersizeofopeningshallbeasperthedrawingoras directed by the

Engineer-in-charge.

Themasonarywallshallbeplasteredinsidewith20mmthick1:3cementmortar and outside

15 mm thick in C.M. (1:3) above coping level.The off set forthe concrete foundation

shall be 300 mm on all sides beyond walls of chamber.

Wheneverpipesenter or leave the masonary chamberbrickson edge must be so

laidaroundtheupperhalfofthepipessoastoformthearchtopreventtheweight of the

masonary chamber over it.

Onthetopofmasonarywalls1:5cementmortarshallbelaidandthenR.C.C.slab of grade

1:2:4 necessary and as directed by the Engineerwith coarse aggregate oftrap metal of

20mmnominal shall be laid necessary from work and centering shall

havetobeprovidedbythecontractorathisowncostasperrelevant specification of cement

InthebottomofMachineholethechannelandbenchingshallbedoneinC.C. 1:2:4(1Cement :

2 Coarse sand:4gradedstone aggregateof 20 mm nominal size) rising at a step in

linefrom edgeof the channel, the channel of the bottom of thechamber shallbe

plastered 20 mm thick in c.m. 1:3 (1 Cement :3fine sand) and steel trowel smooth.

Channelsshallbe in semi circular in the bottomhalfanda diameter equal to the sewer.

Above the horizontal diameter,the side shall be extended vertically to the same level

as the crown of the out going pipe and the top edge shall be suitably rounded

off.Thebranch channels shall also besimilarlyconstructed withrespect to the benching

but at their junctionswiththe mainchannelan appropriate fall suitably rounded

offinthedirection of flow in themain channel shall be given.

For conical shaft ofMachineholenecessary conicalportion shallbetreatedfrom 750 mm

below the bottom of concrete ofslabfor fixing of Machinehole cover and frame.

Theitemincludescuringofallthecementworkfor14days.

MODEOFMEASUREMENTS&PAYMENTS:

Paymentshallbe made on the basis as per numberofmasonary Machineholes chamber

Constructed with allconstructingmaterials labours, excavation refilling curing,

finishing providingand fixingPVC stepsconstructinglayinghalf round

gutterfixingR.C.C. Machinehole cover etc. complete in all respect.

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Theitemwillbe paidperNo.ofconstructionofcomplete masonary

Machineholechamberasshowninthedrawinguptothedepthspecifiedand shownin the

typedesigndrawing.

Themeasurementsshallbemadeforsuchnumberofchambersconstruction.

ThesurplusexcavatedstuffshallbedisposedofasdirectedbyEngineer-in- charge.

Thedepthof Machineholes shall be the distancebetweenthetop of Machinehole and the

invert level of the main drain. Therate includesall labours, materials, tools and plant

etc.required for satisfactory completion ofthis item as directed above.

Theitemincludes:-

(i) ExcavationforMachinehole

(ii) Bed concrete slab concrete and copping with necessary

(iii) Necessarybrickworkwithcementplasterinsideandoutside.

(iv) Providingandfixingpolyproplenesteps.

(v) Carting, conveying and fixingof Machinehole frame cover with

necessary concrete and finishing.

(vi) Refillingwithnecessarywateringandconsolidation.

(vii) Curingfor14days.

FIBREREINFORCEDCONCRETE:

Thefibrereinforcedconcreteframeandcovershallbe560mmdia.Heavydutytype(circular-HD-

20)asperIS:12592-2002.Thedimensionsofframeshallaspertable-1ofclause5.2ofIS-

12592.Theloadtestshallbeaspertable-2ofIS:12592-2002.

TableNo.2–TestLoadandDiameterofBlock

GradeofCover Type Load DiameterofBlock

LD-2.5 Rectangular,squareorcircular 25

MD-10 Rectangularorcircular 100

HD-20 Rectangular,squareorcircular 200

EHD-35 Rectangular,squareorcircular 350

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Thecovershouldhavesuitableliftingarrangement.TheFRCframeandcovershallbepaidonnum

berbasisofcompleteditematsite.

ThisSpecificationcoversthegeneralrequirementsforconcreteusingon-

siteproductionfacilitiesincludingrequirementsinregardtothequality,handling,storageofing

redients,proportioning,batching,mixing,transporting,placing,curing,protecting,repairing,fi

nishingandtestingofconcrete;formwork;requirementsinregardtothequality,storage,bendi

ngandfixingofreinforcement;groutingaswellasmodeofmeasurementandpaymentforcompl

Itshallbeveryclearlyunderstoodthatthespecificationsgivenhereinarebriefanddonotcoverminutedetails.Ho

wever,allworkshallhavetobecarriedoutinaccordancewiththerelevantstandardsandcodesof

practicesorintheirabsenceinaccordancewiththebestacceptedcurrentengineeringpractices

orasdirectedbyEngineerfromtimetotime.ThedecisionofEngineerasregardsthespecification

tobeadoptedandtheirinterpretationandthemodeofexecutionofworkshallbefinalandbindin

gonContractorandnoclaimwhatsoeverwillbeentertainedonthisaccount.

APPLICABLECODESANDSPECIFICATIONS

Thefollowingspecifications,standardsandcodes,includingallofficial

amendments/revisionsandotherspecificationsandcodesreferredtotherein,

shouldbeconsideredapartofthisspecification.Inallcasesthelatestissue/ edition / revision

shall apply.In case of discrepancy between this specification and those referred to

herein below or other specifications forming a part of this bid document, this

specification shall govern.

CodeforMaterials

1. IS:269 -Specificationfor33gradeordinaryportlandcement

2. IS:455 -Specificationforportlandslagcement

3. IS:1489 -Specificationforportlandpozzolanacement

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4. IS:8112 -Specificationfor43gradeordinaryportlandcement.

5. IS:12330 -Specificationforsulphateresistingportlandcement

Specificationforcoarseandfineaggregatesfromnaturalso

urcesforconcrete.

Specificationformildsteelandmediumtensilesteelbarsan

(Part1and2) dharddrawnsteelwiresforconcretereinforcement.

8. IS:1786 -Specificationforhighstrengthdeformedsteelbarsand

wiresforconcretereinforcement.

9. IS:1566 -Specificationforharddrawnsteelwirefabricfor

concretereinforcement.

10. IS:9103 -Specificationforadmixturesforconcrete.

11. IS:2645 -Specificationforintegralcementwaterproofing

12. IS:4990 -Specificationforplywoodforconcreteshutteringwork.

13. IS:12269 -Specificationfor53gradeordinaryportlandcement.

CodeforMaterialTesting

1. IS:4031 -Methodsofphysicaltestsforhydrauliccement.

2. IS:4032 -Methodsofchemicalanalysisofhydrauliccement.

3. IS:650 -Specificationsforstandardsandfortestingofcement.

4. IS:2430 -Methodsforsamplingofaggregatesforconcrete.

5. IS:2386 -Methodsoftestforaggregatesforconcrete.

6. IS:3025 -Methodsofsamplingandtest(physicalandchemical)

waterusedinindustry.

Methodsoftestfordeterminationofwatersolublechloridesi

nconcreteadmixtures.

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CodeforMaterialsStorage

1. IS:4082 -Recommendations on stacking and storing

ofconstructionmaterialsatsite.

CodeforConcreteMixDesign

1. IS:10262 -Recommendedguidelinesforconcretemixdesign.

2. SP:23( -HandbookonConcreteMixes.

CodeforConcreteTesting

1. IS:1199 -Methodofsamplingandanalysisofconcrete.

2. IS:516 -Methodoftestforstrengthofconcrete

3. IS:9013 -Methodofmaking,curinganddeterminingcompressive

strengthofacceleratedcuredconcretetestspecimens.

4. IS:8142 -Methodoftestfordeterminingsettingtimeofconcrete

bypenetrationresistance.

5. IS:9284 -Methodoftestforabrasionresistanceofconcrete.

6. IS:2770 -Methodsoftestingbondinreinforcedconcrete.

CodeforEquipment

1. IS:1791 - Specificationforbatchtypeconcretemixers.

2. IS:2438 - Specificationforrollerpanmixer.

3. IS:4925 - Specificationforconcretebatchingandmixingplant.

4. IS:5892 - Specificationforconcretetransitmixerandagitator.

5. IS:7242 - Specificationforconcretespreaders.

6. IS:2505 - GeneralRequirementsforconcrete

vibrators:Immersiontype.

7. IS:2506 - GeneralRequirementsforscreedboardconcretevibrators.

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8. IS:2514 - Specificationforconcretevibratingtables.

9. IS:3366 - Specificationforpanvibrators.

10. IS:4656 - Specificationforformvibratorsforconcrete.

11. IS:11993 - Codeofpracticeforuseofscreedboardconcretevibrators.

12. IS:7251 - Specificationforconcretefinishers.

Specificationforportableswingweighbatchersforconcr

ete(singleanddoublebuckettype).

14. IS:2750 - Specificationforsteelscaffoldings.

CodesofPractice

1. IS:456 - Codeofpracticeforplainandreinforcedconcrete.

2. IS:457 - Codeofpracticeforgeneralconstructionofplainand

reinforcedconcretefordamsandothermassivestructures.

3. IS:3370 - Codeofpracticeforconcretestructuresforstorageofliquids.

4. IS:3935 - Codeofpracticeforcompositeconstruction.

5. IS:2204 - Codeofpracticeforconstructionofreinforcedconcrete

6. IS:2210 - Criteriaforthedesignofreinforcedconcreteshell

structuresandfoldedplates.

7. IS:2502 - Codeofpracticeforbendingandfixingofbarsforconcrete

8. IS:5525 - Recommendation for detailing of reinforcement in

reinforcedconcreteworks.

9. IS:2751 - Codeofpracticeforweldingofmildsteelplainand

deformedbarsusedforreinforcedconcreteconstruction.

10. IS:9417 - Specificationforweldingcoldworkedbarsforreinforced

concreteconstruction.

11. IS:3558 - Codeofpracticeforuseofimmersionvibratorsfor

consolidatingconcrete.

12. IS:3414 - Codeofpracticefordesignandinstallationofjointsin

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13. IS:4326 - Codeofpracticeforearthquakeresistantdesignand

constructionofbuilding.

14. IS:4014 - Codeofpracticeforsteeltubularscaffolding.

15. IS:2571 - Codeofpracticeforlayingin-situcementconcreteflooring.

Codeofpracticeforextremeweatherconcreting.(Part–1)

Recommendedpracticeforhotweatherconcreting.(Part–

2) - Recommendedpracticeforcoldweatherconcreting.

CodeforConstructionsafety

1. IS:3696 -Safetycodeforscaffoldsandladders.

2. IS:7969 -Safetycodeforhandlingandstorageofbuilding

3. IS:8989 -Safetycodeforerectionofconcreteframedstructures.

CodeforMeasurement

1. IS:1200 -Methodofmeasurementofbuildingandengineeringworks.

2. IS:3385 -CodeofpracticeformeasurementofCivilEngineering

Engineer shall have the right at all times to inspect all operations including thesources of materials,

procurement, layout and storage of materials, the concrete batching and mixing

equipment, and the quality control system.Such an inspection shall be arranged and

Engineer’s approval obtained, prior to starting of concretework.This shall, however,

not relieve Contractor of any of his responsibilities.All materials which doe not

conform to this specification shall be rejected.

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Materialsshouldbeselectedsothattheycansatisfythedesignrequirementsofstrength,serviceability,safety,du

rabilityandfinishwithdueregardstothefunctionalrequirementsandtheenvironmentalcondit

ionstowhichthestructurewillbesubjected.Materialscomplyingwithcodes/standardsshallge

nerallybeused,othermaterialsmaybeusedafterapprovaloftheEngineerandafterestablishing

theirperformancesuitabilitybasedonpreviousdata,experienceortests.

UnlessotherwisespecifiedorcalledforbytheEngineer,cementshallbeOPC/SRCconfirmingtolatestISasperSch

WherePortlandpozzolanaorslagcementareused,itshallbeensuredthatconsistencyofqualityismaintained,th

erewillbenoadverseinteractionsbetweenthematerialsandthefinishspecifiedisnotmarred.

Onlyonetypeofcementshallbeusedinanyonemix.Thesourceofsupply,typeorbrandofcementwithinthesame

structureorportionthereofshallnotbechangedwithoutapprovalfromEngineer.

Cementwhichisnotusedwithin90daysfromitsdateofmanufactureshallbetestedatalaboratoryapprovedbyEn

gineeranduntiltheresultsofsuchtestsarefoundsatisfactory,itshallnotbeusedinanywork.

Aggregates(General)

“Aggregate”ingeneraldesignatesbothfindandcoarseinertmaterialsusedinthemanufactureofconcrete(vide

BIS456&BIS383)andconformingtotestsasperBIS2386(PartItoVI).

“CoarseAggregate”isaggregatemostofwhichisretainedwhenpassedthroughon4.75mmBISsieve.

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AllfineandcoarseaggregatesproposedforuseintheworksshallbesubjecttotheEngineer-in-

Charge’sapprovalandafterspecificmaterialshavebeenaccepted,thesourceofsupplyofsuch

materialsshallnotbechangedwithoutpriorapprovaloftheEngineer-in-charge.

Aggregatesshallconsistofnaturalsand,stone(crushedoruncrushed)andgravelfromasourceknowntoproduce

satisfactoryaggregateforconcreteandshallbechemicallyinert,non-

flaky,strong,hard,durableagainstweathering,orlimitedporosityandfreefromdeleteriousma

terialsthatmaycausecorrosionofthereinforcementormayimpairthestrengthandordurabilit

yofconcrete.Thegradingofaggregatesshallbesuchastoproduceadenseconcreteofspecifieds

trengthandconsistencythatwillworkreadilyintopositionwithoutsegregationandshallbebase

donthe“mixdesign”andpreliminarytestsonconcretespecifiedlater.Theaggregatesshallbebr

oughtfromthesourceasmentionedinVolume–IClauseC.1.39.

Samplingandtesting

Samplesoftheaggregatesformixeddesignanddeterminationofsuitabilityshallbetakenunderthesupervisiono

ftheEngineer-in-

chargeanddeliveredtothelaboratory,wellinadvanceofthescheduledplacingofconcrete.Rec

ordsoftests,whichhavebeenmadeonproposedaggregatesandonconcretemadefromthissou

rceofaggregatesshallbefurnishedtoEngineer-in-

chargeinadvanceofthework,foruseindeterminingaggregatesuitability.Thecostsofallsuchte

sts,samplingetc.shallbebornebythecontractor.

Storageofaggregates

Allcoarseandfineaggregatesshallbestackedseparatelyinstockpilesinthematerialyardneartheworksiteinbins

properlyconstructedtoavoidintermixingofdifferentaggregates.Contaminationwithforeign

materialandearthduringstorageandwhileheapingthematerialsshallbeavoided.Theaggregat

esmustbeofspecifiedqualitynotonlyatthetimeofreceivingatsitebutmoresoatthetimeofload

ingintomixer.Rakersshallbepiledinlayersnotexceeding1.20minheighttopreventconingorse

gregation.Eachlayershallcovertheentireareaofstockpilebeforesucceedinglayersarestarted.

Aggregatesthathavebecomesegregatedshallberejected.

SpecificGravity

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Aggregateshavingaspecificgravitybelow2.4(saturatedsurfacedrybasis)shallnotbeused.

FineaggregateshallconsistofnaturalorcrushedsandconformingtoIS383conformingtotestsasperIS2386partIt

oIV.Thesandshallbeclean,sharp,hard,stronganddurableandshallbefreefromdust,vegetable

substances,adherentcoating,clay,alkali,organicmatter,mica,saltorotherdeleterioussubsta

nces,whichcanbeinjurioustothesettingqualities/strength/durabilityofconcrete.

ScreeningandWashing:Sandshallbepreparedforusebysuchscreeningorwashing,orboth,asnecessary,torem

oveallobjectionableforeignmatterwhileseparatingthesandgrainstotherequiredsizefraction

ForeignMateriallimitations:Thepercentagedeleterioussubstancesinsanddeliveredtothemixershallnotexce

edingthefollowing:

Sr. ForeignMaterial Percentagebyweight

No. Uncrushed Crushed

1 Materialfinerthan75micronISsieve 3.0

3 CoalandLignite 1.0

4 ClayLumps 1.0

Gradation:UnlessotherwisedirectedorapprovedbytheEngineer-in-

charge,thegradingofsandshallbewithinthelimitsindicatedhereunder.

IS:SieveDesignation Grading Grading Grading Grading

Zone-I Zone-II Zone-III Zone-IV

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Wherethegradingfallsoutsidethelimitsofanyparticulargradingzoneofsieves,otherthan600micronsISsieve,b

ytotalamountnotexceeding5%,itshallberegardedasfallingwithinthatgradingzone.Thistoler

anceshallnotbeappliedtopercentagepassingthe600micronISsieveortopercentagepassinga

nyothersieveonthecoarserlimitofgradingzoneIorthefinerlimitofgradingzoneIV.Fineaggreg

atesconformingtogradingzoneIVshallnotbeused.Mixdesignsandpreliminarytestsshallshow

itssuitabilityforproducingconcreteofspecifiedstrengthandworkability.

FinenessModulus

Thesandshallhaveafinenessmodulusofnotlessthan2.2ormorethan4.2.Thefinenessmodulus

isdeterminedbyaddingthecumulativepercentagesretainedonthefollowingISsievesizes(4.75

mm,2.35mm,1.18mm,600micronsand150microns)anddividingthesumby100.

CoarseAggregate

Coarseaggregateforconcrete,exceptasnotedabove,shallconformtoIS383andIS2386.Thisshallconsistofcrus

hedstoneandshallbecleanandfreefromelongated,flakyorlaminatedpieces,adheringcoating

s,claylumps,coalresidue,clinkers,slag,alkali,mica,organicmatterorotherdeleteriousmatter.

ScreeningandWashing:Crushedrockshallbescreenedandorwashedfortheremovalofdirtordustcoating,ifsor

equestedbytheEngineer-in-charge.

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Coarseaggregateshallbeeitherinsinglesizeorgraded,inbothcasesthegradingshallbewithinthefollowinglimits

IS Percentagepassingforsinglesized Percentagepassingforgradeda

Sieve ggregateofnormalsize

Aggregateofnormalsize

Thepiecesshallbeangularinshapeandshallhavegranularorcrystallinesurfaces.Friable,flakyandlaminatedpie

ces,micaandshale,ifpresent,shallbeonlywithintolerancelimitswhichwillnotaffectadverselyt

hestrengthandordurabilityorconcrete.Themaximumsizeofcoarseaggregateshallbe40mmf

orM7.5andM10and20mmforM15toM20concrete,orasdirectedbytheEngineer-in-

chargeorspecifiedotherwise.Themaximumsizeofcoarseaggregateshallbethemaximumsize

specifiedabovebutinnocasegreaterthan¼ oftheminimumthicknessofthemember,provide

dthattheconcretecanbeplacedwithoutdifficultysoastosurroundallreinforcementthoroughl

yandfillthecornersoftheform.Forplainconcretethemaximumsizeofaggregateshallbeof40m

m.forheavilyreinforcedconcretemembers,thenominalmaximumsizeoftheaggregateshallb

e5mmlessthantheminimumcleardistancebetweenthereinforcingmainbarsor5mmlessthan

theminimumcoverreinforcementwhicheverissmaller.

Foreignmateriallimitations

Thepercentageofdeleteriousmaterialsintheaggregatedeliveredtothemixershallnotexceedthefollowing:

Sr. ForeignMaterial Percentagebyweight

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No. Uncrushed Crushed

1 Materialfinerthan75micron 3.0

2 Coalandlignite 1.0

3 Claylumps 1.0

4 Softfragments 3.0 --

WaterusedforbothmixingandcuringshallconformtoIS:456.Potablewaterisgenerallysatisfactory.Waterco

ntaininganyexcessofacid,alkali,sugarorsaltshallnotbeused.

ReinforcementbarsshallconformtoIS:432,IS:226orIS:1786andthewelded wire fabric to IS : 1566 as

shown or specified on the drawings.

Allreinforcementshallbeclean,freefrompitting,oil,grease,paint,loosemill scales, rust, dirty dust or any

other substance that will destroy or reduce bond.

IfpermittedbyEngineer,weldingofreinforcementshallbedoneinaccordancewithIS;2751orIS:9417asapplicab

ReinforcementshallbeTMTFe-500.

Accelerating, retarding, water-reducing and air entraining admixtures shall conformto IS : 9103 and

integral water proofing admixtures to IS :

Admixturesmaybeusedinconcreteaspermanufacturer’sinstructionsonlywiththeapprovalofEngineerbased

uponevidencethatwiththepassageoftimeneitherthecompressivestrengthnoritsdurabilityis

reduced.Anadmixture’ssuitablyand

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effectivenessshallbeverifiedbytrialmixeswiththeothermaterialusedintheworks.Iftwoormo

readmixturesaretobeusedsimultaneouslyinthesameconcretemix,theirinteractionshallbec

heckedandtrialmixesdonetoensuretheircompatibility.Thereshouldalsobenoincreaseinrisk

ofcorrosionofthereinforcementorotherembedments.

Calciumchlorideshallnotbeusedforacceleratingsetofthecementforanyconcretecontainingreinforcementor

embeddedsteelparts.Whencalciumchlorideispermittedsuchasinmassconcreteworks,itshal

lbedissolvedinwaterandaddedtothemixingwaterbyanamountnotexceeding1.5percentofth

eweightofthecementineachbatchofconcrete.Thedesignedconcretemixshallbecorrectedac

Nowastageallowanceforcementandsteelshallbeconsideredandpaidfor.

SAMPLESANDTESTS

Allmaterialsusedfortheworksshallbetestedbeforeuse.

Manufacturer’stestcertificateshallbefurnished,foreachbatchofcement/steelandwhendirectedbyEngineers

amplesshallalsobegottestedbytheContractorinalaboratoryapprovedbyEngineeratnoextra

costtoClient.However,wherematerialissuppliedbyClient,alltestingchargesshallbebornebyC

lient;buttransportationofmaterialsamplestothelaboratoryshallhavetobedonebyContracto

ratnoextracost.

SamplingandtestingshallbeasperIS:2386underthesupervisionofEngineer.Thecostofalltests,samplingetc.sh

allbebornebyContractor.

WatertobeusedshallbetestedtocomplywithrequirementofIS:456.

Contractorshallfurnishmanufacturer’stestcertificatesandtechnicalliteraturefortheadmixtureproposedtob

eused.Ifdirectedtheadmixtureshallbegottestedandapprovedlaboratoryatnoextracost.

STORINGOFMATERIALS

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All material shall be stored in a manner so as to prevent its deterioration and

contaminationwhichwouldprecludeitsuseintheworks.RequirementsofIS: 4082 shall be

Contractorwillhavetomakehisownarrangementsforthestorageofadequatequantityofcementevenifcement

issuppliedbyClient.Costofsuchrejectedcement,wherecementissuppliedbyClient,shallberec

overedatissuerateoropenmarketratewhicheverishigher.Cementbagsshallbestoredindryw

eatherproofshedwitharaisedfloor,wellawayfromtheouterwallsandinsulatedfromthefloort

oavoidmoisturefromground.Notmorethan15bagsshallbestackedinanytier.Storagearrange

mentshallbeapprovedbyEngineer.Storageundertarpaulinsshallnotbepermitted.Eachconsi

gnmentofcementshallbestoredseparatelyandconsumedinitsorderorreceipt.

Eachsizeofcoarseandfineaggregatesshallbestackedseparatelyandshallbeprotectedfromleavesandcontami

nationwithforeignmaterial.Thestacksshallbeonhard,clean,freedrainingbases,drainingawa

yfromtheconcretemixingarea.

Contractorshallmakehisownarrangementsforstoringwateratsiteintankstopreventcontamination.

Thereinforcementshallbestackedontopoftimbersleeperstoavoidcontractwithground/water.Eachtypeands

izeshallbestackedseparately.

Concrete grade shall be as designated on drawings.In concrete grade M15, M20, M25 etc. the number represents thespecified

characteristic compressivestrength of150 mm cube at28 days, expressed in N/sq.mm as per IS : 456.Concrete inthe

worksshallbe“DesignMixConcrete” or “NormalMixConcrete”.Allconcrete works ofgradeM5,M7.5,M-10 andM15 shall

be Nominal whereas all other grades, M20 and above, shall be Design Mix Concrete.

DesignMixConcrete

MixDesignandTesting

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ForDesignMixConcrete,themixshallbedesignedaccordingtoIS:10262andSP:23toprovidethegradeofconcret

ehavingtherequiredworkabilityandcharacteristicsstrengthnotlessthanappropriatevaluesgi

veninIS:456.Thedesignmixshallinadditionbesuchthatitiscohesiveanddoesnotsegregateand

shouldresultindenseanddurableconcreteandalsocapableofgivingthefinishasspecified.For

waterretainingstructures,themixshallalsoresultinwater-

tightconcrete.TheContractorshallexercisegreatcarewhiledesigningtheconcretemixandexe

cutingtheworkstoachievethedesiredresult.

Unlessotherwisespecificallymentioned,theminimumcementcontentforDesignMixConcreteshallbeas givenbelow.

GradeofConcrete

MinimumCementCon

tentinKg/Cu.mofconcrete

TheminimumcementcontentstipulatedaboveshallbeadoptedirrespectiveofwhethertheCo

ntractorachievesthedesiredstrengthwithlessquantityofcement.TheContractor’squotedrat

esforconcreteshallprovidefortheaboveeventuallyandnothingextrashallbecomepayabletot

heContractorinthisaccount.Eveninthecasewherethequantityofcementrequiredishighertha

nthatspecifiedabovetoachievedesiredstrengthbasedonanapprovedmixdesign,nothingextr

ashallbecomepayabletotheContractor.

ItshallbeContractor’ssoleresponsibilitytocarryoutthemixdesignsathisowncost.HeshallfurnishtoEngineeratl

east30daysbeforeconcretingoperations,astatementofproportionsproposedtobeusedforth

evariousconcretemixesandthestrengthresultsobtained.Thestrengthrequirementsoftheco

ncretemixesascertainedon150mmcubesasperIS:516shallcomplywiththerequirementsofIS:

Gradeof Minimum Specified Compressive

Concrete Compressive strength

Strength(N/Sq.mma (N/Sq.mmat28days)

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Arangeofslumps,whichshallgenerallybeusedforvarioustypesofconstructionunlessoth

erwiseinstructedbytheEngineerisgivenbelow:

Structure/Member

Slumpinmillimeters

Maximum Minimum

Reinforcedfoundationwallsandfootings 75

Plainfootings,caissonsandsubstructurewalls 75

T.G.andmassivecompressorfoundations 50

Slabs,beamsandreinforcedwalls 100

Pumpsandmiscellaneousequipmentfoundations 75

Buildingcolumns 100

Heavymassconstruction 50

BatchingandMixingofConcrete

Proportions ofaggregatesandcement, asdecidedbythe concretemixdesign,shallbebyweight.These proportionsshallbemaintained during subsequent

concrete batching by means of weigh batchers capable of controlling the weights within onepercent of the desired value.

Amountofwater addedshallbesuchastoproduce dense concrete ofrequired consistency, specifiedstrengthandsatisfactoryworkability and shall be so

adjusted to account for moisture content in the aggregates.Water cement ratio specified shall bemaintained.Each time the

work stops, the mixer shall be cleaned out, and while recommencing, the first batch shall have10% additional cement to allow

for sticking in the drum.

Arrangementshouldbe madebyContractor tohave the cubes testedinan approved laboratoryor in field athis own expense,with prior consent of

Engineer.Sampling and testing of strength and workability of concrete shall be as per IS : 1199, IS :516 and IS :

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NominalMixConcrete

MixDesignandTesting

Mixdesignandpreliminarytestsarenotnecessaryfor NominalmixConcrete.However works tests shallbe carriedoutasper IS : 456.Proportions for

Nominal Mix Concrete and water / cementratio may byadopted as per Table 3 of IS : 456.However it will be Contractor’s

sole responsibility to adopt appropriate nominal mix proportions to yield the specifiedstrength.

BatchingandMixingConcrete

Basedontheadoptednominalmixes,aggregatesandcementshallbemeasuredbyweight.

Form work shall be all inclusive and shall consist of but not limited to shores,

bracings,sidesoffootings,walls,beamsandcolumns,bottomofslabsetc. including ties,

anchors, hangers, inserts, falsework, wedges etc.

ThedesignandengineeringoftheformworkaswellasitsconstructionshallbetheresponsibilityofContractor.Ho

wever,ifsodesiredbyEngineerthedrawingsandcalculationsforthedesignoftheformworkshal

lbesubmittedtoEngineerforapproval.

Formworkshallbedesignedtofulfillthefollowingrequirements:

a) Sufficientlyrigidandtighttopreventlossofgroutormortarfromtheconcreteatallstage

sandappropriatetothemethodsofplacingandcompacting.

b) Madeofsuitablematerials.

c) Capableofprovidingconcreteofthecorrectshapeandsurfacefinishwithinthespecifie

dtolerancelimits.

d) Capableofwithstandingwithoutdeflectiontheworstcombinationofselfweight,reinf

orcementandconcreteweight,allloadsanddynamiceffectsarisingfromconstruction

andcompactingactivities,windandweatherforces.

e) Capableofeasilystrikingwithoutshock,disturbanceordamagetotheconcrete.

f) Soffitformscapableofimpartingacamberifrequired.

g) Soffitformsandsupportscapableofbeingleftinpositionifrequired.

h) Capableofbeingcleanedand/orcoatedifnecessaryimmediatelypriortocastingtheco

ncrete;designtemporaryopeningswherenecessaryforthesepurposesandtofacilitat

ethepreparationofconstructionjoints.

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Theformworkmaybeoftimber,plywood,steel,plasticorconcretedependinguponthetypeoffinishspecified.Sli

dingformsandslipformaybeusedwiththeapprovalofEngineer.Timberforformworkshallbew

ellseasoned,freefromsap,shakes,looseknots,workholes,warpsandothersurfacedefects.Joi

ntsbetweenformworkandformworkandbetweenformworkandstructuresshallbesufficientl

ytighttopreventlossofslurryfromconcrete,usingsealsifnecessary.

Thefacesofformworkcomingincontactwithconcreteshallbecleanedandtwocoatsofapprovedmouldoilapplie

dbeforefixingreinforcement.Allrubbish,particularlychippings,shavings,sawdust,wirepieces

dustetc.shallberemovedfromtheinterioroftheformsbeforetheconcreteisplaced.Wheredire

cted,cleaningofformsshallbedonebyblastingwithajetofcompressedairatnoextracost.

Formsintendedforreuseshallbetreatedwithcare.Formsthathavedeterioratedshallnotbeused.Beforereuse,

allformsshallbethoroughlyscraped,cleaned,nailsremoved,holessuitablyplugged,jointsrepa

iredandwarpedlumberreplacedtothesatisfactionofEngineer.TheContractorshallequiphims

elfwithenoughshutteringtoallowforwastagesoastocompletethejobintime.

Permanentformworkshallbecheckedforitsdurabilityandcapabilitywithadjoiningconcretebeforeitisusedint

hestructure.Itshallbeproperlyanchoredtotheconcrete.

Wiretiespassingthroughbeams,columnsandwallsshallnotbeallowed.Intheirplacedboltspassingthroughslee

vesshallbeused.Formworkspacersleftinsitushallnotimpairthedesiredappearanceordurabili

tyofthestructurebycausingspalling,ruststainingorallowingthepassageormoisture.

Forliquidretainingstructuressleevesshallnotbeprovidedforthroughboltsorshallthroughboltsberemovedifpr

ovided.Thebolts,inthelattercase,shallbecutat25mmdepthfromthesurfaceandtheholemad

egoodbycementmortarofthesameproportionastheconcretejustafterstrikingtheformwork.

Wherespecifiedorshownondrawings,allcornersandanglesexposedinthefinishedstructureshallhavechamfer

sorfilletsof20mmx20mmsize.

Formsforsubstructuremaybeomittedwhen,intheopinionofEngineer,theopenexcavationisfirmenough(inha

rdnon-poroussoils)toactasaform.Suchexcavations

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shallbeslightlylarger,asdirectedbyEngineer,thanthatrequiredasperdrawingtocompensatef

orirregularitiesinexcavation.

TheContractorshallprovideadequatepropscarrieddowntoafirmbearingwithoutoverloadinganyofthestruct

Theshutteringforbeamsandslabsshallbesoerectedthatthesideshutteringofbeamscanberemovedwithoutdi

sturbingthebottomshuttering.Iftheshutteringforacolumniserectedforthefullheightoftheco

lumn,onesideshallbebuiltupinsectionsasplacingofconcreteproceedsorwindowsleftforplaci

ngconcretefromthesidelimitthedropofconcreteto1.0morasdirectedbyEngineer.TheContra

ctorshalltemporarilyandsecurelyfixitemstobecastin(embedments/inserts)inamannerthat

willnothinderthestrikingofformsorpermitlossofgrout.

Formworkshowingexcessivedistortion,duringanystageofconstruction,shallberepositionedandstrengthene

d.Placedconcreteaffectedbyfaultyformwork,shallbeentirelyremovedandformworkcorrect

edpriortoplacementofnewconcreteatthecostoftheContractor.

Thestrikingtimeforformworkshallbedeterminedbasedonfollowingrequirements:

a) Developmentofadequateconcretestrength;

b) Permissibledeflectionattimeofstrikingformwork;

c) Curingprocedureemployed–itsefficiencyandeffectiveness;

d) Subsequentsurfacetreatmenttobedone;

e) Preventionofthermalcrackingatre-entrantangles;

f) Ambienttemperature;and

g) Aggressivenessoftheenvironment(unlessimmediateadequatestepsaretakentopre

ventdamagetotheconcrete).

Undernormalcircumstances(generallywheretemperaturesareabove20Deg.C)formsmaybestruckafterexpir

yofthetimeperiodgiveninIS:456,unlessdirectedotherwisebyEngineer.Forportlandpozzolon

a/slagcementthestrippingtimeshallbesuitablymodifiedasdirectedbytheEngineer.ItistheCo

ntractor’sresponsibilitytoensurethatformsarenotstruckuntiltheconcretehasdevelopedsuff

icientstrengthtosupportitself,doesnotundergoexcessivedeformationandresistsurfacedam

ageandanystressedarisingduringtheconstructionperiod.

ReinforcementWorkmanship

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Reinforcing bars supplied bent or in coils shall be straightened cold without damageat no extra

cost.No bending shallbedonewhenambient temperature is below 5 Deg. C.Local

warming may be permitted if steel is kept below 100 Deg. C.

All bars shall be accurately bent gradually and according to the sizes and shapes shown on the

drawings / schedules or as directed by Engineer.

Re-bendingorstraighteningincorrectlybentbarsshallnotbedonewithout approval of Engineer.

Reinforcementshallbeaccuratelyfixedandmaintainedfirmlyinthecorrectpositionbytheuseofblocks,spacers,

chairs,bindingwireetc.topreventdisplacementduringplacingandcompactionofconcrete.Th

etiedinplacereinforcementshallbeapprovedbyEngineerpriortoconcreteplacement.Spacers

shallbeofsuchmaterialsanddesignsaswillbedurable,notleadtocorrosionofthereinforcemen

tandnotcausespallingoftheconcretecover.

Bindingwireshallbe16gaugesoftannealedwire.Endsofthebindingwireshallbebentawayfromtheconcretesur

faceandinnocaseencroachintotheconcretecover.

Substitutionofreinforcement,laps/splicesnotshownondrawingshallbesubjecttoEngineer’sapproval.

ToleranceforformedandconcretedimensionsshallbeasperIS:456unlessspecifiedotherwise.

Tolerancesspecifiedforhorizontalorverticalbuildinglinesorfootingsshallnotbeconstruedtopermitencroach

mentbeyondthelegalboundaries.

PREPARATIONPRIORTOCONCRETEPLACEMENT

Before concrete is actually placed in position, the inside of the formwork shall be

cleanedandmouldoilapplied,insertsandreinforcementshallbecorrectly positioned and

securely held, necessary openings, pockets etc. provided.

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Allarrangementsformwork,equipmentandproposedprocedure,shallbeapprovedbyEngineer.TheContracto

rshallmaintainseparatePourCardforeachpourandshallproducebeforecommencementofc

oncretingtoEngineer-in-charge.

TRANSPORTING,PLACINGANDCOMPACTINGCONCRETE

Concrete shall be transported from the mixing plant to the formwork with minimum time lapse by

methods that shall maintain the required workability and will prevent segregation, loss

of any ingredients or ingress of foreign matter or water.

Inallcasesconcreteshallbedepositedasnearlyaspracticabledirectlyinitsfinalposition.Toavoidsegregationcon

creteshallnotberehandledorcausedtoflow.Forlocationswheredirectplacementisnotpossibl

eandinnarrowforms.TheContractorshallprovidesuitabledropsand‘ElephantTrunks’.Concre

teshallnotbedroppedfromaheightofmorethan1.0masstipulatedinclauseD.7.8.13.

Concreteshallnotbeplacedinflowingwater.Underwater,concreteshallbeplacedinpositionbytremiesorbypip

elinefromthemixerandshallneverbeallowedtofallfreelythroughthewater.

WhileplacingconcretetheContractorshallproceedasspecifiedbelowandalsoensurethefollowing:

a) Continuouslybetweenconstructionjointsandpredeterminedabutments.

b) Withoutdisturbancetoformsorreinforcement.

c) Withoutdisturbancetopipes,ducts,fixingsandtheliketobecastin;ensurethatsuchite

msaresecurelyfixed.Ensurethatconcretecannotenteropenendsofpipesandconduit

d) Withoutdroppinginamannerthatcouldcausesegregationorshock.

e) Indeeppoursonlywhentheconcreteandformworkdesignedforthispurposeandbyusi

ngsuitablechutesorpipes.

f) Donotplaceiftheworkabilityissuchthatfullcompactioncannotbeachieved.

g) Withoutdisturbingtheunsupportedsidesofexcavations;preventcontaminationofco

ncretewithearth.Providesheetingifnecessary.Insupportedexcavations,withdrawth

eliningprogressivelyasconcreteisplaced.

h) Ifplaceddirectlyontohardcoreoranyotherporousmaterial,dampenthesurfacetored

ucelossofwaterfromtheconcrete.

i) Ensurethatthereisnodamageordisplacementtosheetmembranes.

j) Recordthetimeandlocationofplacingstructuralconcrete.

Concreteshallnormallybecompactedinitsfinalpositionwithinthirtyminutesofleavingthemixer.Concreteshall

becompactedduringplacingwithapprovedvibratingequipmentwithoutcausingsegregationu

ntilitformsasolidmassfreefromvoidsthoroughlyworkedaroundreinforcementandembedde

dfixturesandintoallcornersoftheformwork.Immersionvibratorsshallbeinsertedverticallyat

pointsnotmorethan450mmapartandwithdrawnslowlytillairbubblesceasetocometosurface

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voids.Whenplacingconcreteinlayersadvancinghorizontally,careshallbetakentoensureadeq

uatevibration,blendingandmeldingoftheconcretebetweensuccessivelayers.Vibratorsshall

notbeallowedtocomeincontactwithreinforcement,formworkandfinishedsurfacesafterstar

tofinitialset.Overvibrationshallbeavoided.

Concretemaybeconveyedandplacedbymechanicallyoperatedequipmentaftergettingthecompleteprocedur

eapprovedbyEngineer.Theslumpshallbeheldtotheminimumnecessaryforconveyingconcret

ebythismethod.Whenconcreteistobepumpedconcretemixshallbespeciallydesignedtosuitp

umping.Careshallbetakentoavoidstoppagesinworkoncepumpinghasstarted.

Exceptwhenplacingwithslipforms,eachplacementofconcreteinmultipleliftwork,shallbeallowedtosetforatle

ast24hoursafterthefinalsetofconcretebeforethestartofsubsequentplacement.Placingshall

stopwhenconcretereachesthetopoftheopeninginwallsorbottomsurfaceofslab,inslabandbe

amconstruction,anditshallberesumedbeforeconcretetakesinitialsetbutnotuntilithashadti

metosettleasdeterminedbyEngineer.Concreteshallbeprotectedagainstdamageuntilfinalac

MASSCONCRETEWORKS

SequenceofpouringformassconcreteworksshallbeasapprovedbyEngineer.TheContractorshallexercisegrea

tcaretopreventshrinkagecracksandshallmonitorthetemperatureoftheplacedconcreteifdir

Curingandprotectionshallstartimmediatelyafterthecompactionoftheconcrete to protect it from :

(a) prematuredryingout,particularlybysolarradiationandwind;

(b) leachingoutbyrainandflowingwater;

(c) rapidcoolingduringthefirstfewdaysafterplacing;

(d) highinternalthermalgradients;

(e) lowtemperatureoffrost;

(f) vibrationandimpactwhichmaydisrupttheconcreteandinterferewithitsbondtothere

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Allconcrete,unlessdirectedotherwisebyEngineer,shallbecuredbyuseofcontinuosspraysorpondedwaterorc

ontinuouslysaturatedcoveringsofsacking,canvas,hessainorotherabsorbentmaterialforthe

periodofcompletehydrationwithaminimumof7days.Thequalityofcuringwatershallbethesa

measthatusedformixing.

WhereacuringmembraneisdirectedtobeusedbytheEngineer,thesameshallbeofanon-

waxbaseandshallnotimpairtheconcretefinishinanymanner.Thecuringcompoundtobeuseds

hallbegotapprovedfromtheEngineerbeforeuseandshallbeappliedwithsprayingequipmentc

apableofasmooth,eventexturedcoat.

Curingmayalsobedonebycoveringthesurfacewithanimpermeablematerialsuchaspolyethylene,whichshallb

ewellsealedandfastened.

Extraprecautionsshallbeexercisedincuringconcreteduringcoldandhotweather.

CONSTRUCTIONJOINTSANDKEYS

Construction joints will be as shown on the drawing or as approved by Engineer. Concrete shall be

placed without interruption until completion of work between construction joints.If

stopping of concreting becomes unavoidable anywhere, a properly formed

construction joint shall be made with the approved ofEngineer.

Dowelsforconcretework,notlikelytobetakenupinthenearfuture,shallbecoatedwithcementslurryandencase

dinleanconcreteasindicatedonthedrawingsorasdirectedbyEngineer.

Beforeresumingconcretingonasurfacewhichhashardenedalllaitanceandloosestoneshallbethoroughlyremo

vedbywirebrushing/hackingandsurfacewashedwithhighpressurewaterjetandtreatedwitht

hinlayerofcementslurryforverticaljointsanda15mmthicklayerofcementsandmortarforhori

zontallayers,theratioofcementandsandbeingthesameasintheconcretemix.

Whenconcretingistoberesumedonasurfacewhichhasnotfullyhardened,alllaitanceshallberemovedbywirebr

ushing,thesurfacewetted,freewaterremovedandacoatofcementslurryapplied.Onthisalaye

rofconcretenotexceeding150mmthicknessshallbeplacedandwellrammedagainsttheoldwo

rk.Thereafterworkshallproceedinthenormalway.

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FOUNDATIONBEDDING

Allearthsurfacesuponwhichoragainstwhichconcreteistobeplaced,shallbe well compacted and free

from standing water, mud or debris.Soft or spongy area shall be cleaned out and back

filled with either soil cement mixture, lean concrete or

cleansandcompactedasdirectedbyEngineer.Thesurfacesofabsorptivesoils shall be

Concreteshallnotbedepositedonlargeslopingrocksurfaces.Therockshallbecuttoformroughstepsorbenches

bypicking,barringorwedging.Therocksurfaceshallbekeptwetfor2to4hoursbeforeconcretin

Theformworkforconcreteworksshallbesuchastogivethefinishasspecified.TheContractorsshallmakegoodas

directedanyunavoidabledefectsconsistentwiththetypeofconcreteandfinishspecified;defec

tsduetobadworkmanship(e.g.damagedormisalignedforms,defectiveorpoorlycompactedco

ncrete)willnotbeaccepted.TheContractorshallconstructtheformworkusingthecorrectmate

rialsandtomeettherequirementsofthedesignandtoproducefinishedconcretetorequireddi

mensions,plumbs,planesandfinishes.

SurfacefinishTypeF1

Thistypeoffinishshallbefornon-

exposedconcretesurfaceagainstwhichbackfillorconcreteistobeplaced.Themainrequireme

ntisthatofdense,wellcompactedconcrete.Notreatmentisrequiredexceptrepairofdefectivea

reas,fillingallformtieholesandcleaningupoflooseoradheringdebris.Forsurfacesbelowgrade

whichwillreceivewaterproofingtreatmenttheconcreteshallbefreeofsurfaceirregularitiesw

hichcouldinterferewithproperandeffectiveapplicationorwaterproofingmaterialspecifiedfo

SurfacefinishTypeF2

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Thistypeoffinishshallbeforallconcreteworkwhichwillbeexposedtoviewuponcompletionofthejob.Theappea

ranceshallbethatofasmoothdense,well-

compactedconcreteshowingtheslightmarksofwellfittedshutteringjoints.TheContractorsha

llmakegoodanyblemishes.

SurfacefinishTypeF3

Thistypeoffinishshallbeforconcreteworkwhichwillbeexposedtoviewbuttogiveanappearanceofsmooth,den

compactedconcretewithnoshuttermarks,stainfreeandwithnodiscoloration,blemishes,arris

es,airholesetc.Onlylinedorcoatedplywoodwithverytightjointsshallbeusedtoachievethisfini

sh.Thepanelsizeshallbeuniformandaslargeaspracticable.Anyminorblemishesthatmightocc

urshallbemadegoodbyContractor.

Integralcementfinishonconcretefloor

Inallcaseswhereintegralcementfinishonaconcretefloorhasbeenspecified,thetoplayerofconcreteshallbescr

eenedofftoproperlevelandtampedwithtamperhavingconicalprojectionssothattheaggregat

eshallbeforcedbelowthesurface.Thesurfaceshallbefinishedwithawoodenfloatandatrowel

withpressure.Thefinishshallbecontinuedtilltheconcretereachesitsinitialset.Nocementorce

mentmortarfinishshallbeprovidedonthesurface.Wherespecified,afloorhardenerasapprove

dbytheEngineershallbesuppliedandusedasrecommendedbythemanufacturer.

REPAIRANDREPLACEMENTOFUNSATISFACTORYCONCRETE

Immediately after the shuttering is removed, all the defective areas such as honey- combed surfaces,

rough patches, holes left by form bolts etc. shall be brought to the notice of Engineer

who may permit patching of the defective areas or reject the concrete work.

Allthroughholesforshutteringshallbefilledforfulldepthandneatlypluggedflushwithsurface.

RejectedconcreteshallberemovedandreplacedbyContractoratnoadditionalcosttoClient.

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Forpatchingofdefectiveareasallloosematerialsshallberemovedandthesurfaceshallbepreparedasdirectedb

Bondingbetweenhardenedandfreshconcreteshallbedoneeitherbyplacingcementmortarorbyapplyingepox

y.ThedecisionoftheEngineerastothemethodofrepairstobeadoptedshallbefinalandbindingo

ntheContractorandnoextraclaimshallbeentertainedonthisaccount.Thesurfaceshallbesatur

atedwithwaterfor24hoursbeforepatchingisdonewith1:5cementsandmortar.Theuseofepox

yforbondingfreshconcreteshallbecarriedoutasdirectedbyEngineer.

VACUUMDEWATERINGOFSLABS

Wherespecifiedfloorslabs,eitherongradeorsuspended,shallbefinishedbyvacuumdewateringincludingallop

erationssuchaspokervibration,surfacevibration,vacuumprocessing,floatingandtrowellinga

sperequipmentmanufacturersrecommendation.Theequipmenttobeusedshallbesubjectto

Engineer’sapproval.

HOTWEATHERREQUIREMENTS

ConcretingduringhotweathersshallbecarriedoutasperIS:7861(Part–I)

Adequateprovisionsshallbemadetolowerconcretetemperatureswhichshallnotexceed40Deg.Catthetimeof

placementoffreshconcrete.

WheredirectedbyEngineer,Contractorshallspraynon-

waxbasedcuringcompoundofunformedconcretesurfacesatnoextracosts.

COLDWEATHERREQUIREMENTS

ConcretingduringcoldweathershallbecarriedoutasperIS:7861(Part-II).

Theambienttemperatureduringplacementanduptofinalsetshallnotfallbelow5Deg.

C.Approvedantifreeze/acceleratingadditivesshallbeusedwheredirected.

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Formajorandlargescaleconcretingworksthetemperatureofconcreteattimesofmixingandplacing,thetherma

lconductivityoftheformworkanditsinsulationandstrippingperiodshallbecloselymonitored.

LIQUIDRETAININGSTRUCTURES

TheContractorshalltakespecialcareofconcreteforliquidretainingstructures,undergroundstructuresandthos

eothersspecificallycalledfortoguaranteethefinishandwatertightness.

TheminimumlevelofsurfacefinishforliquidretainingstructuresshallbetypeF2.Allsuchstructuresshallbehydro

TheContractorshallincludeinhispriceofhydro-

testingofstructure,allarrangementsfortestingsuchastemporarybulkheads,pressuregauges,

pumps,pipelinesetc.

Anytemporaryarrangementsthatmayhavetobemadetoensurestabilityofthestructuresshallalsobeconsidere

dtohavebeentakenintoaccountwhilequotingtherates.

Anyleakagethatmayoccurduringthehydro-

testorsubsequentlyduringthedefectsliabilityperiodortheperiodforwhichthestructureisgua

ranteedshallbeeffectivelystoppedeitherbycement/epoxypressuregrouting,gunitingorsuch

othermethodsasmaybeapprovedbytheEngineer.AllsuchrectificationoftheClient/Engineera

tnoextracosttotheClient.

TESTINGCONCRETESTRUCTURESFORLEAKAGE

Hydro-statictestforwatertightnessshallbedoneatfullstoragebyEngineer,asdescribedbelow:

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Incaseofstructureswhoseexternalfacesareexposed,suchaselevatedtanks,therequirementsofthetestshallb

edeemedtobesatisfiediftheexternalfacesshownosignofleakageorsweatingandremaincom

pletelydryduringtheperiodofobservationofsevendaysafterallowingasevendayperiodforabs

orptionafterfillingwithwater.

Inthecaseofstructureswhoseexternalfacesaresubmergedandarenotaccessibleforinspection,suchasunderg

roundtanks,thestructuresshallbefilledwithwaterandaftertheexpiryofsevendaysafterthefill

ing,thelevelofthesurfaceofthewatershallberecorded.Thelevelofwatershallberecordedagai

natsubsequentintervalsof24hrs.overaperiodofsevendays.Backfillingshallbewithheldtillthe

tanksaretested.Thetotaldropinsurfaceleveloveraperiodforsevendayshallbetakenasanindic

ationofthewatertightnessofthestructure.TheEngineershalldecideontheactualpermissiblen

atureofthisdropinthesurfacelevel,takingintoaccountweatherthestructuresareopenorclose

dandthecorrespondingeffectithasonevaporationlosses.Unlessspecifiedotherwise,astructu

rewhosetopiscoveredshallbedeemedtobewatertightifthetotaldropinthesurfacelevelovera

periodofsevendaysdoesnotexceed40mm.

Eachcompartment/segmentofthestructureshallbetestedindividuallyandthenalltogether.

Forstructuressuchaspipes,tunnelsetc.thehydro-

statictestshallbecarriedoutbyfillingwithwater,aftercuringasspecified,andsubjectingtothes

pecifiedtestpressureforspecifiedperiod.Ifduringthisperiodthelossofwaterdoesnotexceedt

heequivalentofthespecifiedrate,thestructureshallbeconsideredtohavesuccessfullypassedt

IfEngineerfeelsthatthematerialsi.e.cement,sandcoarseaggregates,reinforcementandwaterarenotinaccord

ancewiththespecificationsorifspecifiedconcretestrengthsarenotobtained,hemayordertest

stobecarriedoutonthesematerialsinlaboratory,tobeapprovedbytheEngineer,asperrelevan

tISCodes.ClientshallpayonlyforthetestingofmaterialsuppliedbytheClient,otherwiseContrac

torshallhavetopayforthetests.Transportingofallmaterialtothelaboratoryshallhoweverbed

onebytheContractoratnoextracosttoClient.

Intheevenofanyworkbeingsuspectedoffaultymaterialorworkmanshiprequiringitsremovaloriftheworkscub

esdonotgivethestipulatedstrengths,EngineerreservestherighttoordertheContractortotake

outcoresandconducttestsonthemordoultrasonictestingorloadtestingofstructure,etc.Allth

esetestsshallbecarriedoutbyContractor

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atnoextracosttotheClient.

AlternativelyEngineeralsoreservestherighttoasktheCont

ractortodismantleandre-dosuchunacceptableworkatthecostofContractor.

IfthestructureiscertifiedbyEngineerashavingfailed,thecostofthetestandsubsequentdismantling/reconstru

ctionshallbebornebyContractor.

Thequotedunitrates/pricesofconcreteshallbedeemedtoprovideforalltestsmentionedabove.

Groutshallbeprovidedasspecifiedonthedrawings.TheproportionofstandardGroutshallbesuchastoproduce

aflowablemixtureconsistentwithminimumwatercontentandshrinkage.Surfacetobegroute

dshallbethoroughlyroughenedandcleaned.Allstructuralsteelelementstobegrouted,shallbe

cleanedofoil,grease,dirtetc.Theuseofhot,strongcausticsolutionforthispurposewillbepermi

tted.Priortogrouting,thehardenedconcreteshallbesaturatedwithwaterandjustbeforegrout

ingwaterinallpocketsshallberemoved.Groutingoncestartedshallbedonequicklyandcontinu

ously.VariationingroutmixesandproceduresshallbepermittedifapprovedbyENGINEER.Theg

routproportionsshallbelimitedasfollows:

Use GroutThickness MixProportions W/CRatio

a) Fluidmix Under25mm OnepartPortlandcem

enttoonepartsand.

b) General 25mmandoverbutle OnepartPortlandceme

ssthan50mm ntto2partsand.

c) Stiffmix 50mmandover OnepartPortlandceme

shrinkgroutwherecalledforintheScheduleofQuantitiesorspecifiedonthedrawingsshallbepr

ovidedinstrictaccordancewiththemanufacturer’sinstructions/specificationsonthedrawing

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Allmaterials,workmanshipandfinishedconstructionshallbesubjecttocontinuousinspectionandapprovalofE

ngineer.MaterialsrejectedbyEngineershallbeexpresslyremovedfromsiteandshallbereplace

dbyContractorimmediatelyatnoextracosttoClient.

Uponthecompletionofconcretework,allforms,equipment,constructiontools,protectivecoveringsandany

debris,scrapsofwoodetc.resultingfromtheworkshallberemovedandthepremisesleftclean

ACCEPTANCECRITERIA

Anyconcreteworkshallsatisfytherequirementsgivenbelowindividuallyandcollectivelyforittobea

a) Propertiesofconstituentmaterials;

b) Characteristiccompressivestrength;

c) Specifiedmixproportions;

d) Minimumcementcontent;

e) Maximumfree-water/cementratio;

f) Workability;

g) Temperatureoffreshconcrete;

h) Densityoffullycompactedconcrete;

i) Covertoembeddedsteel;

k) Tolerancesindimensions;

l) Tolerancesinlevels;

n) Surfacefinishes;

o) Specialrequirementssuchas:

i) watertightness;

ii) resistancetoaggressivechemicals

iii) resistancetofreezingandthawing

iv) veryhighstrength

v) improvedfireresistance

vi) wearresistance

vii) resistancetoearlythermalcracking

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TheEngineer’sdecisionastotheacceptabilityorotherwiseofanyconcreteworkshallbefinalandbinding

oftheContractor.

Forworknotaccepted,theEngineermayreviewanddecidewhetherremedialmeasuresarefeasiblesoasto

rendertheworkacceptable.TheEngineershallinthatcasedirecttheContractortoundertak

eandexecutetheremedialmeasures.Theseshallbeexpeditiouslyandeffectivelyimpleme

ntedbytheContractor.NothingextrashallbecomepayabletotheContractor.Nothingextr

ashallbecomepayabletotheContractorbytheClientforexecutingtheremedialmeasures.

MODEOFMEASUREMENTANDPAYMENT

Theunitrateforconcreteworkundervariouscategoriesshallbeallinclusiveand no claims for extra

payment on account of such items as leaving holes, embedding inserts, etc. shall be

entertained unless separately provided for in the schedule of quantities.No extra claim

shall also be entertained due to change in the number,

positionand/ordimensionsofholes,slotsoropenings,sleeves,insertsoron

accountofanyincreasedlift,leadofscaffoldingetc.Allthesefactorsshouldbe take into

consideration while quoting the unit rates.Unless provided for in the Schedule of

Quantities the rates shall also include fixing insets in all concrete work, whenever

Payments for concrete will bemade on the basis of unit rates quoted for

therespectiveitemsintheScheduleofQuantities.Nodeductionintheconcrete

quantitywillbemadefor reinforcements,insertsetc.andopeninglessthan0.100of

asq.minareaswhereconcreteismeasuredinsq.mand0.010cu.mwhereconcrete is

measured in cu.m.Where no such deduction for concrete is made, payment for

shuttering workprovidedforsuchholes,pockets,etc.willnotbemade.Similarly the unit

rates for concrete work shall be inclusive or exclusive of shuttering as provided for in

the Schedule of Quantities.

Payment for beams will be made for the quantity based on the depth being reckoned from the

understood of the slabs and length measured as the clear distance between

supports.Payment for columns shall be made for the quantity based on height

reckoned upto the underside of slab / beams.

The unit rate for precast concrete members shall include formwork, mouldings,

finishing,hoistingandsettinginpositionincludingsettingmortar,provisionof lifting

arrangement etc. complete.Reinforcement and inserts shall be measured and paid for

separately under respective item rates.

Where the formwork is paid for separately, it shall be very clearly understood that payment for

formwork is inclusive of formwork, shuttering, shoring, propping

scaffoldingetc.complete.Onlythenetareaofconcreteformed(shuttered)shallbe

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measured forpayment.Unlessotherwisestated clearly formworkwillnotbepaid

separately and it is deemed to beam included in the respective concrete item.

Underremarksindicatedeviationsfromdrawings&specificationscongestionin

reinforcementifanyunusualoccurrencessuchasfailureofequipmentsinkingof supports /

props, heavyrain affecting reasonable. Poor compaction improper curing other

deficiencies observations etc.

MATERIALS:STRUCTURALSTEEL

AllstructuralsteelshallbecomplywiththerequirementsofIS226-

1961andstructuralsteelworkIS1915-

1962specificationsforstructuralsteelappropriateforbridgework.

SteelforPinsandRollers

Rolledsteelpinsandrollers,shallcomplywithrequirementsoftheISspecificationsappropriatef

orthework.Steelcastingforcaststeelpinsshallconformtograde1or3ofIS1030-

1956specificationsforsteelcasting(forgeneralengineeringpurposesasappropriate).

MildsteelforboltsandnutswhentestedshallcomplywithIS1608-

1960andshallhavetensilestrengthofnotlessthan2500Kg/cm2.Plainwashersshallbemadeofs

WeldingElectrode

MildsteelelectrodesshallcomplywithrequirementsofIS814-

1957specificationforcoveredelectrodesformetalarcweldingofmildsteel.

AllworkshallbeinaccordancewiththedrawingsandshallsatisfyISspecificationNo.1915-

1961.Careshallbetakentoensurethatallpartsinassemblyfitaccuratelytogether.Notesorspeci

ficationsonthedrawingssuppliedbytheEngineer-in-

Charge/consultingEngineer,aretobeconstructedassupersedingorcancellinganyclauseofthis

specificationswithwhichtheyconflict.Onalldrawingsdimensionsshowninfiguresshallbeacte

dinpreferencetomeasurementbyscale.

Allstructuralsteelmembersandpartsshallhavestraightedges.Allstraighteningshapingandlev

ellingetc.shallbedonebypressureonlyandnotbyhammering.Alljogglesandkneesshallbeform

edbypressureandwherepracticableinmakingthese,themetalshallnotbecutandwelded.

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Allstructuralsteelpartswhererequiredshallbesheared,croppedsawnorflamecutandground

accuratelytotherequireddimensionsandshape.

Thediameterofboltsholesshallbe1.5to2.0mm.largerthanthenominaldiameterofbolt.Allhol

esforboltsshallbedrilledunlesspermittedbyEngineer-in-

Chargeforpunchingtheholes.Careshallbetaken,suchassurroundingmaterialisnotdeformed

ordamagedincaseofpunchingtheholeisallowed.

WeldingofsteelconformingtorelevantISspecificationsshallbeinaccordancewithgeneralrequ

irementsofmetalarcwelding.Inadditionaltogeneralrequirement,thefollowingcareshallbeta

(a) Theweldingshallbepositionedfordownwardweldingwhereverpracticable.

(b) Theweldingcurrentshallconformwithrespectofvoltageandempearetotherecomme

ndationsofthemanufacturersoftheelectrodebeingused.Thearclength,voltageande

mpeareshallbesuitedtothethicknessofmaterial,typeofgrooveandothercircumstan

(c) Thesurfacetobeweldedandsurroundingmaterialforadistanceofatleast155mmshall

befreefromscale,dirt,grease,paint,heavyrustorothersurfacedeposit.

(d) Memberstobeweldedshallbeheldincorrectpositionbyholes,clamps,wedges,jigsoro

thersuitabledevicesorbytackweldinguntilweldinghasbeencompleted,suchfastenin

gasmaybeusedshallbeadequatetoensuresafety.Suitableallowanceshallbemadefor

warpageandshrinkage.

(e) Tackweldslocatedwherethefinalweldswilllaterbemadeshallbesubjecttothesameq

ualityrequirementsasfinalwelds.Defectiveandbrokentackweldsshallberemovedbe

forefinalwelding.

(f) Fusionfacesshallbemadeorcutbyshearing,chipping,machiningorbygascutting.

(g) Exposedfacesofweldsshallbemadereasonablysmoothandregularsoastoconformas

closelyaspracticabletodesignrequirementsandshallnotbeoflessthantherequiredcr

(h) Finishedweldsandadjacentpartsshallbeprotectedwithcleanboiledlinseedoilafterall

slaghasbeenremoved.

SafetyPrecautions

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(a)Operatorsofweldingandcuttingequipmentshallbeprotectedfromtheraysofthearcflameglovesandbyhel

met,handshields,orgogglesequippedwithsuitablefilterlenses.

(b) Closedspaceshallbeventilatedproperlywhileweldingisbeinggonetherein.

(c) Weldersshouldbeprovidedwithsuchstagingaswillenablethemtoperformtheweldin

goperation.Forsiteweldingsheltershouldbeprovidedtoprotectweldersandtheparts

tobeweldedfromtheweather.

TheConstructorshallemployacompetentweldingsupervisortoensurethatthestandardofworkmanshipandth

equalityofmaterialscomplywithrequirementslaidinthesespecification.

TheConstructorshallprovidefreeaccesstotherepresentativeofEngineer-in-

Charge/ConsultingEngineertotheworkbeingcarriedoutatallreasonabletimesandfacilitiessh

allbeprovidedsothatduringthecourseofweldinghemaybeabletoinspectanylayerofweldmet

al.Heshallbeatlibertytorejectanymaterialthatdoesnotconformtothetermsofthespecificatio

nsandtorequireanydefectiveweldstobecutoutandwelded.TherepresentativeoftheEnginee

r-in-Charge/ConsultingEngineershallbenotifiedinadvanceofanyweldingoperations.

InspectionandtestingofweldsshallbedoneaslaiddowninIS822andIS11017.

Noweldershallbeemployedinanypositionexpectthosewhoarefullyqualifiedtowelding.Qualificationforweld

ersshallbeaslaiddowninIS812.

Allsteelworkintendedtobeboltedtogethermustbeincontactoverthewholesurface.Jointswhi

chhavetotakecompressivestressandtheendsofallstiffenersshallmeettrulyoverthewholeoft

hebuttingsurface.

Allmembershallbesoarrangedthattheycanbeaccuratelyassembled,withoutbeingundulypac

ked,strainedorforcedintopositionandwhenbuiltshallbetrueandfreefromtwistkinks,buckets

oropenjointsbetweencomponentpieces.Workshallbekept

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properlyboltedtogetherandnodriftingshallbeallowedexceptforthepurposeofdrawingasse

mbledsectionstogetherinaccuracy’sinmatchingofholesmaybecorrected.Butdriftingtoenlar

geholesisprohibited.Failureinanyoftheaboverespectwillinvolvetherejectionofdefectiveme

ModeofMeasurementandPayment

MeasurementofthisitemshallbeasperIS1200(PartVIII)-1974orasperitslatestrevisionsofarasapplicable.

Thecontractrateshallbesuitableforunitofonemetrictonneofstructuralsteel.

MATERIALS:REINFORCEMENT

SpecificationforTMTbarsreinforcement(Fe-500)

ThescopeofworkconsistsofprovidingandlayingmildsteelreinforcementandTMTreinforcem

entforRCCworksofvariouscomponentsofthestructure.ThismaybeofTata,Sail,Vizag,Vinaya

k,Steffooranyotherapprovedmake.Thisincludescuttings,bending,binding,placing,withalleq

uipmentsandlabourrequiredfortheworkasdirectedbytheEngineer-in-

chargeandalloperationscoveredwithintheintentandpurposeofthespecification.

BendingofReinforcement:

Reinforcingsteelshallconformaccuratelytothedimensionsshownonrelevantdrawingsandco

nformingtotherelevantIScodes(latestrevision)

BarsshallbebentcoldtothespecifiedshapeanddimensionsorasdirectedbytheEngineer-in-

chargeusingaproperbarbender,operatedbyhandorpowertoattainproperradiiofbends.

Barsshallnotbebentorstrainghenedinamannerthatwillcauseinjurytothematerial.

Barsbentduringtransportorhandlingshallbestraightenedbeforebeingusedonwork;theyshal

lnotbeheatedtofacilitatebending.

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ThebendingoftheTMTbarsshallbecarriedoutasperthefollowing:

Sr.No. Operation Size TMTFe-500

1 Bend Upto22mmdia. 3d

Over22mmdia. 4d

2 Rebend Upto10mmdia. 4d

Over10mmdia. 5d

PlacingofReinforcement:

Allreinforcingbarsshallbeaccuratelyplacedintheexactpositionshownonthedrawings,andsh

allbesecurelyheldinpositionduringplacingofconcretebyannealedbindingwirenotlessthan1

mm.insizeandconformingtoIS:280andbyusingstaysblocksormetalchairs,spacer,metalhang

ers,supportingwiresorotherapproveddevicesatsufficientlycloseintervals.Barswillnotbeallo

wedtosagbetweensupportsnordisplacedduringconcretingoranyotheroperationoverthewo

rk.Alldevicesusedforpositioningshallbeofnoncorrodiblematerial.Woodenandmetalsuppor

tswillnotextendtothesurfaceofconcrete,exceptwhereshownonthedrawings,Placingbarson

layersoffreshlylaidconcreteastheworkprogressesforadjustingbarspacingwillnotbeallowed.

Piecesofbrokenstone,brickorwoodenblocksshallnotbeused.Layersofbarsshallbeseparated

byspacerbars,precastmortarblocksorotherapproveddevices.

Reinforcementafterbeingplacedinpositionshallbemaintainedinacleanconditionuntilcompl

etelyembeddedinconcrete.Specialcareshallbeexercisedtopreventanydisplacementofreinf

orcementinconcretealreadyplaced.

Toprotectreinforcementfromcorrosion,concretecovershallbeprovidedasindicatedonthedr

awings.Allbarsprotrudingfromconcretetowhichotherbarsaretobesplicedandwhicharelikel

ytobeexposedforanindefiniteperiodshallbeprotectedbyathickcoatofneatcementgrout.

Inthecaseofcolumnsandwalls,verticalbarsshallbekeptinnormalpositionwithtimbertemplat

eshavingslotsaccuratelycutinforbarposition.Suchtemplatesshallberemovedaftertheconcr

etinghasprogresseduptoaleveljustbelowthem.

Barscrossingeachother,whererequired,shallbesecuredbybindingwire(annealed)ofsizenotl

essthan1mmandconformingtoIS:280insuchamannerthattheydonotslipovereachotheratth

etimeoffixingandconcreting.Asfaraspossible,barsoffulllengthshallbeused.Incasethisisnotp

ossible,overlappingofbarsshallbedoneasdirectedbytheEngineer-in-

charge.Whenpracticable,overlappingbarsshallnottoucheachother,butbekeptapartby25m

mor11/4timesthemaximumsizeofthecoarseaggregateswhicheverisgreater,byconcretebet

weenthem.Wherethisisnotfeasible,overlappingbarsshallbeboundwithannealedsteelwire,

notlessthan1mmthicknesstwistedtightineightshapearoundthelappedbars.Theoverlapssha

llbestaggeredfordifferentbarsandlocatedatfixedlocationsonlyalongthespanwhereneithers

hearnorbendingmomentis

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WeldingofTMTbarscanbepermittedifspecifiedonthedrawings,jointsofreinforcementbarss

hallbebuttweldedsoastotransmittheirfullstrength.Weldedjointsshallpreferablybelocateda

tpointswheresteelwillnotbesubjecttomorethan75percentofthemaximumpermissiblestres

sesandweldssostaggeredthatatanyonesection,notmorethan33percentoftherodsarewelde

warmingorpostheattreatmentisnecessary.Interpasstemperatureshouldbelimitedto200 C

withlowheatinputandequivalentstrengthlowhydrogentypeelectrode.Suitablemeansshallb

eprovidedforholdingthebarssecurelyinpositionduringwelding.Itmustbeensuredthatnovoid

sareleftinweldingandwhenweldingisdonein2or3stages,previoussurfaceshallbecleanedpro

perty.Endsofthebarsshallbecleanedofallloosescale,rust.grease,paintandotherforeignmatt

erbeforewelding.Onlycompetentweldersshallbeemployedonthework.

Weldedpiecesofreinforcementshallbetested.Specimensshallbetakenfromtheactualsit

eandtheirnumberandfrequencyoftestsshallbeasdirectedbytheEngineer-in-charge.

:DOUBLEWALLCORRUGATED(DWC)HDPEPIPES

DOUBLEWALLCORRUGATED(DWC)HDPEPIPES:

Thisspecificationcoverstherequirementsforsuccessfullydesigning,manufacturing,supplying,la

ying,jointingandtestingatworksandsiteofdoublewallcorrugated(DWC)HighDensityPolyethylen

e(HDPE)PipesusedfordrainageandSewerage.

APPLICABLECODES

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Themanufacturing,testing,supplyingandtestingatworksitesofHDPE-

DWCpipesshallcomplywithIS16098Part-

II:2013andallcurrentlyapplicablestatutes,regulations,standardsandCodes.Inparticular,thefollo

wingstandards,unlessotherwisespecifiedherein,shallbereferred.Inallcasesthelatestrevisionoft

heCodesshallbereferredto.IfrequirementsofthisSpecificationconflictwiththerequirementsofth

estandards/Codes,thisSpecificationshallgovern:

CodeNo. Title/Specification

IS4905:1968 Methodsforrandomsampling.

IS5382:1985 Specificationforrubbersealingringsforgasmains,watermainsandsewers(f

irstrevision).Type-I&Type-VI

IS12235 Methodsoftestforthermoplasticspipes&fittings.

(Part1):1986 Methodofmeasurementofoutsidediameter.

(Part5):1986 Reversiontest

(Part8):1986 Internalhydrostaticpressuretest

IS16098Part-II:2013 Structuredwallplasticspipesfornonpressuredrainageandsewerage-

specifications.

OthersCodesnotspecificallymentionedherebutpertainingtotheuseofHDPE-

DWCpipesformpartoftheseSpecifications.

PipesshallbedesignatedasperIS16098:2013,accordingtothegradeofmaterial,followedbystiffne

ssclasses(SN)andNominaldiameterse.g.200mmSN-8.

Thematerialfromwhichthepipeisproducedshallconsistsubstantiallyofpolyethylene(PE),towhic

hmaybeaddedonlythoseadditivesthatareneededtofacilitatethemanufactureofthesepipesandf

ittingsconfirmingtorequirementofthisstandardsaspertable1,2,3&4.Apipeoffittingswithasmoot

hinternal&profiledexternalsurfaceformingafinisheddoublewalledprofileshallcomeunderthisst

Whensealingringsareretainedbymeansofretainingdevices(ringsorcaps),thedevicesmaybemad

efrompolymers,providedtheyconformtothesamefunctionaldimensionsandtestrequirementsa

sappliedtosocketswitheitherlooseorfixedsealingrings.

Themanufacturer’sownreworkmaterialconformingtotherequirementsgivenin3.25

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ofIS:16098ispermissible.Nootherreworkmaterialshallbeused.

MeaninsideDiameter

Themeaninsidediameter,atanypointandtolerancesshallbeasgiveninTable5ofIS:16098andshall

bemeasuredaccordingtothemethodgiveninIS12358(Part8).WallThicknessThenominalwallthic

kness,e,shallbeinaccordancewithTable5ofIS:16098.Tolerancesininsidediametersshallbethose

giveninIS:16098.

Effectivelengthofpipes(Le)withsocketsshallbenotlessthanthatspecifiedbythemanufacturerwh

enmeasuredasshownfiguretoofIS:16098:2013.

Thelengthsmaybesuppliedasagreedtobetweenthepurchaserandthemanufacturer.Dimensions

ofpipes&spigotsofpipes&fittings.ThenominalsizeandminimummeaninsidediameterforDN-

IDseriesarespecifiedinTable-5.TheoutsidediametersoftheDN-

IDseriespipesandspigotsintendedtohavejointingdimensionsaspipesand/orfittingsaccordingtot

hisstandardshallcomplywiththeoutsidediametersandtolerancesasspecifiedbythemanufacture

r.However,theguidelinesforpipes,spigotsandfittingsnotintendedtohavejointingdimensionsasp

ipesand/orfittingsaccordingtothisstandard,thetolerancesoftheoutsidediameterofpipesandspi

gotsfittingsshallbe+0.3mm/(-)0.6mmofthenominalsizeofoutsidediameter.

INSPECTIONANDTESTING:

ThematerialwillbeinspectedandtestedbytheInspectorstobenominatedbytheEmployer.Thesa

mplingproceduretobeadoptedandthecriteriaforconformityshallbeasgiveninIS:16098.Thefollo

wingtestsshallbeconducted:

Typetestsareintendedtoprovethesuitabilityandperformanceofanewtechniqueoranewsizeofpi

pe.Typetestingshallbeinaccordancewithtables15to18asapplicable

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ofIS:160982013.Alltestsaretobecarriedouteitherinanin-

houselaboratoryoratanauthorisedthirdpartylaboratory.

A) PHYSICALCHARACTERISTICS:Appearance

Thestructuredouterlayeroffinishedpipesandfittingsshallbeuniformlycorrugated.Theinnerlayer

shallbesmoothandplain.Bothlayersshallbefreefromanyvisualdefectssuchascracks,blisters,fore

igninclusionsandanyothervisualirregularitieswhichmaycauseharmtoitsconstructionintegrities.

Theinnersurfacemayreflectslightshallowundulations.

ColourofFinishedPipes

Theinnerandouterlayerofpipesandfittingsshallbecolouredthroughout.Theoutsidelayerofpipes

andfittingsshouldpreferablybeblack,orangebrownorgrey.Whentestedinaccordancewiththete

stmethodspecifiedinTable6andTable7usingtheindicatedparameters,thepipesshallhavephysic

alcharacteristicsconformingtotherequirementsgiveninTable6andTable7.Whentestedinaccord

ancewiththetestmethodspecifiedinTable8andTable9usingtheindicatedparameters,thefittings

hallhavephysicalcharacteristicsconformingtotherequirementsasgiveninTable8andTable9.

B) MECHANICALCHARACTERISTICS

Thepipesshallbedesignatedinthefollowingnominalringstiffnessclasses(SN):

a) DN≤500:SN4,SN8orSN16

b) DN>500:SN2,SN4,SN8orSN16

ForDN≤500,themanufacturer’sguaranteedminimumstiffnessbetweentheSNvalues,ofacompo

nentmaybeusedforcalculationpurposesonly.Suchpipesshallbeclassified

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andmarkedasthenextlowerstiffnessclass.Whentestedinaccordancewiththetestmethodspecifi

edinTable10usingtheindicatedparameters,thepipeshallhavemechanicalcharacteristicsconfor

mingtotherequirementsgiveninTable10.

RingFlexibility

WhentestedinaccordancewiththetestmethoddescribedinTable10usingtheindicatedparamete

rs,andvisuallyinspectedwithoutmagnification,requirementsin(a)and(b)shallbesatisfiedduringt

hetestandrequirements(c)to(d)shallbesatisfiedafterthetest.

a) Thereshallbenodecreaseofthemeasuredforce;

b) Thereshallbenocrackinginanypartofthewallstructure;

c) Thereshallbenowalldelaminationexceptpossibledelaminationbetweentheoutsideandinsidewa

llofdoublewallpipesoccurringinreducedweldingzoneintheendsoftestpiece.Processaidingprofil

eofmaterialotherthanthepipematerial(seeFig.1)isnotsubjecttothisrequirement;

d) Thereshallbenoothertypesofruptureinthetestpiece;and

e) Permanentbucklinginanypartofthestructureofthepipewallincludingdepressionsandcraters,sh

allnotoccurinanydirection.

Markingshallbelabelled,printedorformeddirectlyonthepipeorfitting,insuchawaythatafterstora

ge,weatheringandhandlingthelegibilityshallbemaintained.Markingshallnotinitiatecracksoroth

ertypesofdefectswhichadverselyinfluencetheperformanceofthepipesorthefitting.

MinimumRequiredMarking

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Eachpipesshallbemarkedatintervalsofmaximum3m,atleastonceperpipe,withthefollowinginfor

a) Manufacturer’sname/Trade-mark;

b) Diameterseries,nominalsize;

c) Stiffnessclass;

d) Material;and

e) Lotnumber/batchnumbercontaininginformationregardingperiodofmanufacture.

Eachfittingshallbemarkedwiththefollowinginformation:

a) Manufacturer’sname/Trade-mark;

b) Diameterseries,nominalsize;

c) Nominalangle;

d) Stiffnessclass;

e) Material;and

f) Lotnumber/batchnumbercontaininginformationregardingperiodofmanufacture.

g) BISCertificationMarkingeachpipeorfittingsmayalsobemarkedwiththestandard

TheuseoftheStandardmarkisgovernedbytheprovisionsoftheBureauofIndianStandardsAct,198

6andtheRulesandRegulationsmadethereunder.Thedetailsofconditionsunderwhichthelicencef

ortheuseoftheStandardMarkmaybegrantedtomanufacturersorproducersmaybeobtainedfrom

theBureauofIndianStandards.

RequirementfortheHDPE-DWCPipeSupplier

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ThemanufacturerofHDPE-

DWCpipesfromwhomthepipeswillbeprocuredinthecontracthavecurrentaccreditationunderIS

O9000andshouldalsopossesBISlicenseforproductionofDWCpipesasperIS-

16098:2013.Hemusthavesuppliedatleast2.0kmofsuchpipesunderonecontractwhichshouldhav

ebeencommissionedtothesatisfactionoftheclient.

Thebiddershouldsubmitthefollowingdata/certificatesregardingHDPE-

DWCpipesalongwiththeQualificationbid:

BrandName,Manufacturerscapacity,previoussupplydetailsetc.CopyofvalidISO9000

/14000accreditation.(Ifany)CopyofvalidBISaccreditationformanufactureofHDPE-

DWCpipeasperIS160982013.Manufacturer’srecommendationandPressuretestingprocedure.

Elastomericsealingringsshallbefreefromsubstancesthatcanhaveadetrimentaleffectonthepipes

orfittingsusedinconjunctionwithpipes.

Thedesignoftheprofileanddimensionsofthesealingringislefttothemanufacturer,aslongasthepi

pewiththesealingringmeetstherequirementsofthisstandard.Wherethedesignofthesocketissuc

hthattheringisnotfirmlyfixedinposition,thehousingfortheringshallbesodesignedastominimizet

hepossibilityoftheringbeingdislodgedduringinsertionofthepipe(orspigotorfitting)tocompletet

hejoint.Elastomericsealingringsshallbeinaccordancewithoneofthetype(Type1toType6)ofIS538

2.Themanufacturershouldspecifythetypeofsealingring(namelyType1,2,3,4,5or6)thatisbeingof

Atestreportorconformitycertificatemaybeobtainedfromthemanufacturerofthesealingringforc

onformitytoIS5382.

Itisnotunusualforcorrugatedpolyethylenepipetobeconnectedtoothertypesofpipematerials.Av

ailableoptionsdependonthejointdualityrequiredthroughoutthesystemandtheparticularcombi

nationofpipematerials.Inmoststormsewerapplications,thepipecanbejointedbyheatingthepipe

endstogether,wrappingthemwithageotextile,

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andpouringaconcretecollararoundthem.Althoughsuchaconnectionisdependentoncontractore

xpertise,itwillgenerallylimitsoilintrusionbutnotprovideawatertightjoint.Watertightconnection

sbetweendifferentmaterialswillrequireadditionalfittingsandadapters.Ifthoseoptionsarenotac

ceptable,aMachineholecanbeusedtomakethetransition.

Pipemanufacturersareavaluableresourceduringtheprojectplanningstagesincetheyarefamiliar

withadaptersthatworkwellwiththeirownproducts.

PLAINENDPIPECOUPLERS

1. SoilTightSplitCoupler–ThisisaclamShelltypecouplerusedinNon-

WaterTightapplication.TheyareusedonperforatedorsolidstyleCPPpipesatsitewherethenatives

oilisstiffandcohesiveenoughtoreducethepossibilityofaloosesoilinfiltrationintothepipethatcoul

dcreateaflowrestriction.

2. SiltTightSplitCoupler–

TheseareCalmShelltypecouplertowhichagasketmaterialhasbeenaddedforthepurposeofrestric

tingSiltInfiltrationintothepipeatacouplingjoint.Thisnon-watertightgasketmaterialmeetsASTM-

D-1056,Grade2A2orASTM-F-

477.Theinstallershouldtakecaretoremovealldirtandforeignmatterfromthepipeendsandgasket

materialtoensureasecurefit.

BELL&SPIGOTCOUPLERSWITH“O”RINGGASKETS

ThesecouplerstoimpedeorpreventtheinfiltrationorinfiltrationofliquidsinNON-

PRESSUREapplication.

1. Bell&SpigotCouplerswith“O”RingGaskets:-

Thesecouplersareproducedonthepipeduringthepipeextrusionprocess.Bell&Spigotpipesareava

ilablein20-footlengths,eachcouplerSpigotEndcomeswithanon-

pressurepipewaterleakrestrictiongasketmanufacturedperASTM-D-

477.ShouldgravityflowpressuretestsberequiredperASTM-F-

1417,oneshouldnottestuntilthepipeshavebeenbackfilledorrestrainedforsafety.

2. Sheargasketgravityflowsealcouplers:-Thesepliablecouplerswithstainlesssteelclamp-

GripCompressionbandshavebeenusedforyearsconnectingclay,concrete,steelandplasticpipesi

nalltypesofenvironments.Theyareimpervioustonormal.Aswithany

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coupler,beforeapplying,insurethatnoforeignmatterjeopardizescontactbetweenthetwosurfac

3. MasticWrapCoupler:-

Wraparoundstylemasticcouplershaveanouterlayerofcrosslaminatedpolyethyleneplasticanda

nunderlayeradhesivesurfaceofrubberizedmasticmaterial.Inbetweenthesetwosurfacelayersisa

highstrengthshearandpunctureresistantlayerofwovenpolypropylene.Thiscenterthirdlayerpro

videstoughnessagainstpunctureaswellasstretchresistanceunderearthloadshiftsorsettlements.

TheMasticwrapcouplerismechanicallysealedbystainlesssteelscrewtypehoseclampcompressio

nbands.Theseadjustablecompressionclampbandsareeasilysecuredusingsimpletoolssuchasscr

ewdrivers,nutdrivers,orsocketwrenches.Propertensiononthosebandswillprovideasealagainsti

nfiltrationandexfiltrationingravityflow,non-

pressurepipes.Eachmasticcouplercomeswiththreehoseclampcompressionbandsortieslocated

withinthecoupler.Thereisonecompressionstraplocatedintheheatjointcorrugationpipevalley,a

ndonestrapinthefirstvalleyoneachsideoftheheatjoint.Propercompressiontensiononeachstrap(

centeredoveracorrugationvalley)willforciblyapplythemasticsurfacearoundthecorrugationcres

tsandwallstoprovideaseal.Enoughtensionshouldbeappliedtosubstantiallysinkthecompression

strapsintothecorrugationvalleysbelowthecorrugationcrestsinordertohavealeakresistantseal.P

riortoapplyingthemasticsidetothepipebesuretocleanthepipeofsoil/dustparticlesthatcouldinte

rferewiththemasticsealmakingcontactwiththepipesurface.Masticcouplerscanalsobeusedtoco

uplecorrugationpipesmanufacturedwithdifferentcorrugationdesignsofthesamepipesizeaswell

astocouplepipestootherpipesmadefromadifferentrawmaterialbase.

DELIVERYINSPECTIONS

ContractoralongwithProjectmanageorhisrepresentativemakeeveryefforttoensureorderaccur

acyandquality.Asafinalcheck,theAMCshouldconductapersonalinspectionatdeliverytoverifytha

tthecorrectproductandtheexpectedquantityisreceived.Pipecorrugations,gaskets,pipeends,co

uplersorotherjoints,andanyaccessoriesshouldbevisuallyinspectedfordamagethatmayhaveocc

urredduringtransportation

PRODUCTIDENTIFICATION

ProductmarkingsonCrumplerPlasticPipewillincludethefollowinginformationtofacilitatejobsitei

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