annex iii technical specifications 105 c1

7/27/2019 Annex III Technical Specifications 105 C1

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SRI LANKA OPERATIONS CENTRE

AnnexIII Technical Specification

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PREAMBLETOICTAD

STANDARDSPECIFICATIONSFORCONSTRUCTIONANDMAINTENANCEOFROAD

ANDBRIDGES

The works shall be carried out in conformity with the ICTAD standard specifications for

constructionandmaintenanceofRoadsandBridgesICTADPublicationnoSCA/5,1989issued

under the Authority of the General manager, Road Development Authority, Ministry of

highways,SriLanka.

References to the Specification in the Contract Documents mean the Sri LankanICTAD

Construction Specification. The Sri LankanICTAD Construction Specification is hereby

incorporatedintotheContractasaContractDocumentandtheContractorwillbedeemedto

havefullknowledgeofthisSpecification.

Copiesof

the

Sri

Lankan

ICTAD

Construction

Specification

are

available

at

the

above

address

onpaymentoftherelevantfee.IntheeventofanyconflictintheSpecificationthefollowing

precedenceshallbeapply:

1. Part A: General Technical Specifications: ICTADStandard Specifications for

ConstructionandMaintenanceofRoads&Bridges

2. Part B: Particular Technical Specifications: Special Provision to Standard

Specification


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SERIES100 GENERAL

CONTENTS

101. ABBREVIATIONS..................................................................................................................7

102. DEFINITIONS .......................................................................................................................7

103. ARRANGEMENTSFORTRAFFICDURINGCONSTRUCTION...................................................11

103.1. GENERAL .............................................................................................................................11

103.2. USINGPARTOFTHEROAD ......................................................................................................13

103.3. TEMPORARYDIVERSION..........................................................................................................13

103.4. TRAFFICSAFETYANDCONTROL ................................................................................................13

104. CONTROLOFWORKS ........................................................................................................14

104.1.

AUTHORITYOFTHEENGINEER..................................................................................................14104.2. CONFORMITYWITHPLANSANDSPECIFICATIONS..........................................................................15

104.3. STANDARDS ..........................................................................................................................15

104.4. HEALTHANDSAFETY ..............................................................................................................15

104.5. PROTECTIONOFPUBLICSERVICEFACILITIES ................................................................................16

104.6. SAFETYRELATINGTOTEMPORARYSTRUCTURES...........................................................................16

104.7. SAFETYRELATINGTONAVIGABLEWATERWAYS ...........................................................................16

104.8. ENVIRONMENTAL REQUIREMENT..............................................................................................17

EmissionstandardvaluesforMotorVehicleExhaust....................................................................18 EmissionstandardvaluesforBlackSmokeEmissionfromboat/ship/vessel.................................18

104.9. CONSTRUCTIONPROGRAMMING ..............................................................................................21

104.10. PROGRESSMEETINGS.............................................................................................................22

104.11.

RETURNSANDREPORTS ..........................................................................................................22104.12. TELECOMMUNICATIONS..........................................................................................................23

104.13. COMPACTIONGENERAL .......................................................................................................23

104.14. MIXING&CONTROLOFMOISTURECONTENTBEFORECOMPACTION ..............................................24

104.15. COMPACTIONEQUIPMENT ......................................................................................................24

104.16. WATERANDPOWERSUPPLYARRANGEMENTS ............................................................................24

104.17. DRAINAGEDURINGCONSTRUCTION...........................................................................................25

104.18. PREVENTIONOFDAMAGESTOEMBANKMENTS,SUBGRADELAYERS,PAVEMENTLAYERSANDSHOULDERS

INPOSITION...........................................................................................................................................25

104.19. COMPACTIONTRIALS..............................................................................................................25

104.20. COMPACTIONCONTROL..........................................................................................................25

104.21. DISPERSALOFHAULINGEQUIPMENT .........................................................................................26

104.22.

PROTECTIONTONEWLYCONSTRUCTEDLAYERS ...........................................................................26104.23. BRIDGECONSTRUCTIONSEQUENCE ...........................................................................................26

104.24. MATERIALSTESTINGBYINDEPENDENTLABORATORIES ..................................................................27

104.25. SPECIALANDADDITIONALTESTING ...........................................................................................27

104.26. STAFFFORMATERIALSTESTING................................................................................................27

104.27. CODESANDSTANDARDS .........................................................................................................27

104.28. TESTRESULTSANDRECORDS ...................................................................................................27

104.29. MEASUREMENTANDPAYMENT ................................................................................................27

105. CONTROLOFMATERIALS ..................................................................................................28

105.1. SOURCESOFSUPPLYANDQUALITYREQUIREMENTS......................................................................28

105.2. STORAGEOFMATERIALS.........................................................................................................28

105.3.

HANDLING

OF

MATERIALS.......................................................................................................28

105.4. APPROVALOFSOURCESOFMATERIAL(ADDTHEFOLLOWING) .......................................................29105.5. STOCKPILINGOFMATERIALS(ADDTHEFOLLOWING) .................................................................... 29


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105.6. TEMPORARYSTOCKPILINGOFMATERIALS(ADDTHEFOLLOWING)...................................................29

105.7. CONTROLTESTSONMATERIALDURINGCONSTRUCTION(ADDTHEFOLLOWING) ...............................29

105.8. MATERIALTESTING(ADDTHEFOLLOWING) ................................................................................31

105.9. APPLICABILITYOFGENERALSPECIFICATIONS(ADDTHEFOLLOWING)................................................31

105.10. PAYMENT(ADDTHEFOLLOWING).............................................................................................31

106.

GENERALRULESFORMEASUREMENTANDPAYMENT .......................................................31

106.1. OVERHAUL ...........................................................................................................................33

106.2 MEASUREMENTOFPAVEMENTFORAREAANDVOLUMEBASEDPAYMENT........................................33

a. AreaBasis..............................................................................................................................33 b. VolumeBasis.........................................................................................................................33

106.3 SCOPEOFRATESFORDIFFERENTITEMSOFWORK .......................................................................33

106.4 FACILITIESFORVERIFICATIONOFMEASUREMENTS .......................................................................33

106.5 SELECTIONOFPAYITEMS ........................................................................................................33

106.6 SUBDIVISIONSWITHINPAYITEMS ...........................................................................................33

106.7 SUBSTANTIALCOMPLETIONOFTHEWORKS(ADDTHEFOLLOWING) ................................................ 33

107. SIEVEDESIGNATIONS ........................................................................................................34

108. CONTRACTORSESTABLISHMENTONSITE .........................................................................34

108.1. OFFICE,EQUIPMENTTESTINGFACILITIESETC. .............................................................................34

108.2. LEGALRELATIONSANDRESPONSIBILITYTOTHEPUBLIC..................................................................34

108.3. MEASUREMENT.....................................................................................................................34

108.4. PAYMENT.............................................................................................................................35

109. INFORMATIONFURNISHEDBYTHEEMPLOYER..................................................................36

110. WORKMANSHIPANDQUALITYCONTROL..........................................................................36

111. SELECTIONOFLABOUR .....................................................................................................37

112. WORKEXECUTEDBYTHEEMPLOYEROROTHERCONTRACTORS........................................37

113. PROTECTIONOFPUBLICSERVICEFACILITIES......................................................................38

113.1. EXISTINGSERVICES.................................................................................................................38

113.2. PAYMENT.............................................................................................................................38

114. MAINTENANCEOFEXISTINGROADS..................................................................................39

114.1. GENERALOBLIGATIONS ..........................................................................................................39

114.2. PAYMENT.............................................................................................................................39

115. PROTECTIONOFTHEWORKSANDREQUIREMENTSTOBEMETBEFORECONSTRUCTIONOF

NEWWORK

ON

TOP

OF

COMPLETED

WORK

IS

COMMENCED ........................................................39

115.1. PAYMENT.............................................................................................................................40

116. REMEDIALWORK..............................................................................................................41

116.1. EARTHWORKS .......................................................................................................................41

116.2. LOCALDEFECTSINPAVEMENTLAYERS .......................................................................................41

116.3. CONCRETE............................................................................................................................42

116.4. PAYMENT.............................................................................................................................42

117. WATERSUPPLYARRANGEMENTS......................................................................................42

117.1. PAYMENT.............................................................................................................................42

118.

ELECTRCITY

SUPPLY...........................................................................................................42

118.1. PAYMENT.............................................................................................................................42


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119. PAYMENTS&TOLERENCES................................................................................................42

119.1. PAYMENT.............................................................................................................................43

120. PHOTOGRAPHICRECORDS ................................................................................................43

120.1. PAYMENT.............................................................................................................................43

121. ACCESSTOSITE .................................................................................................................43

121.1. PAYMENT.............................................................................................................................44

122. COOPERATIONATSITE.....................................................................................................44

122.1. PAYMENT.............................................................................................................................44

123. ROADSANDSITETOBEKEPTCLEAN..................................................................................44

123.1. PAYMENT.............................................................................................................................44

124. SECURITYOFTHEWORKS..................................................................................................44

124.1. PAYMENT.............................................................................................................................45

125. SUPPRESSIONOFNOICE....................................................................................................45

125.1. PAYMENT.............................................................................................................................45

126. SAFETY..............................................................................................................................45

126.1. PAYMENT.............................................................................................................................46

127. METHODOFWORKING .....................................................................................................46

127.1. PAYMENT.............................................................................................................................46

128. TEMPORARYWORKS.........................................................................................................46

128.1. PAYMENT.............................................................................................................................46

129.

SETTINGOUTANDCROSSSECTIONSURVEYANDDRAWINGS ............................................47

129.1. GENERAL .............................................................................................................................47

129.2. SETTINGOUTANDCROSSSECTIONS..........................................................................................47

129.3. MEASUREMENT&PAYMENT ...................................................................................................48

129.4. PAYMENT.............................................................................................................................48

130. FACILITIESFORTHEENGINEERANDHISSTAFF...................................................................48

130.1 DESCRIPTION ........................................................................................................................48

130.2 LANDFORFACILITIES ..............................................................................................................49

130.3 SOLEUSEOFFACILITIES ..........................................................................................................50

130.4 SERVICES..............................................................................................................................50

130.5

RENTEDPREMISES .................................................................................................................50130.6 OFFICESANDFURNISHINGS .....................................................................................................50

130.7 ACCOMMODATION FORTHEENGINEER ......................................................................................52

130.8 ENGINEERSLABORATORYANDEQUIPMENT................................................................................54

A) MATERIALSTESTINGBYINDEPENDENTLABORATORIES ..................................................................54

B) SPECIALANDADDITIONALTESTING ...........................................................................................54

C) STAFFFORMATERIALSTESTING................................................................................................54

130(15) SPECIALANDADDITIONALTESTING PROVISIONALSUM .................................................................55

130(16) STAFFFORMATERIALSTESTING PERSONMONTH.......................................................................55

130.9 STATIONERYFORTHEENGINEER ...............................................................................................55

130.10 PROVISIONOFHOTELACCOMMODATIONFORTHEENGINEERANDHISSTAFF ....................................56

130.11 SURVEYEQUIPMENT ..............................................................................................................57

130.12

MAINTENANCEOFENGINEERSFACILITIES ..................................................................................58130.13 CLERICALANDTECHNICALSTAFF...............................................................................................59


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130.14 VEHICLESFORTHEENGINEER, ..................................................................................................60

131. PROJECTSIGNBOARDS .....................................................................................................61

131.1 DESCRIPTION ........................................................................................................................61

131.2 MEASUREMENT.....................................................................................................................61

131.3

PAYMENT.............................................................................................................................62

132. PROVISIONOFINSURANCES,BONDSANDSECURITIES.......................................................62

132.1 DESCRIPTION ........................................................................................................................62

132.2 MEASUREMENTANDPAYMENT ................................................................................................62

133. MARBLESTONEFORFOUNDATIONLAYING.......................................................................62

133.1 DESCRIPTION ........................................................................................................................62

133.2 MEASUREMENT.....................................................................................................................62

133.3 PAYMENT.............................................................................................................................63

133 MARBLESTONEFORFOUNDATIONLAYING.......................................................................59

133.1

DESCRIPTION ........................................................................................................................59133.2 PAYMENT..........................................................................................................................59


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SERIES100 GENERAL

101. ABBREVIATIONS

Addthefollowing:

m metre

km kilometre

Sq.m squaremetre

Cu.m cubicmetre

cm centimetre

mm millimetre

gm. gram

kg kilogram

N Newton

kN kilonewton

HFL HighFloodLevel

LWL LowWaterLevel

WMM WetMixMacadam

102. DEFINITIONS

Addthefollowing:

AggregateHardmineralelementsofconstructionmaterialmixtures,forexample:

sand,gravel(crushedoruncrushed)orcrushedrock

AsphaltConcreteAmixturetopredeterminedproportionsofaggregate,fillerand

bituminous binder material plant mix and usually placed by means of a paving

machine.

AsphaltSurfacing Thelayerorlayersofasphaltconcreteconstructedontopofthe

roadbase.

BackFill Excavatedmaterial,whichisplacedandcompactedintrenchesandaround

foundations.

BatterBoard

A

board

of

wood

fixed

to

posts

at

the

top

of

cuttings

or

the

bottom

of

embankmentswhichindicatestheslopeatwhichthecuttingorembankmentistobe

constructed.

Bitumen Aclassofblackordarkcoloured(solid,semisolid,orviscous)cementitious

substances,naturalormanufactured,composedprincipallyofhighmolecularweight

hydrocarbons,ofwhichasphalts,tars,pitches,andasphaltitesaretypical.

Borrow Area/Borrow Pit An area, within designated boundaries, outside the

PermanentWorks,approvedforthepurposeofobtainingfillorpavementmaterials.

Aborrowpitistheexcavatedpitinaborrowarea.


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Borrow Material Borrow material is a general term used to describe material

obtainedfromaborrowpit.

Boulder A rock fragment, usually rounded by weathering or abrasion, with an

averagedimensionof300mmormore.

Capping Layer A layer of selected fill material placed on the top of the topmost

embankmentlayerorthebottomofexcavation.

Chippings Chippingsaresinglesizedparticlesofcrushedrock,crushedbouldersor

crushedgravelusedforsurfacedressing.

CoarseAggregate Courseaggregateismaterialretainedonthe4.75mmsieve.

ComplianceTesting Testingofthecompletedworkstoascertaincomplianceofthe

requirementsoftheSpecification.

Cut Cutshallmeanallexcavatedmaterialfromtheroadprismincludingsidedrains.

Cutting Thatportionof the roadprism fromwherematerial isexcavated tosub

gradeorroadbedlevel.

Earthworks The excavation of material from cuttings and/or the construction of

embankments.

Embankment Thatportionof the roadprismcomposedofapproved fillmaterial,

whichliesabovetheoriginalgroundandisboundedbythesideslopes,describedin

the

Contract,extending

downwards

and

outwards

from

the

outer

shoulder

break

pointsandonwhichthepavementisconstructed.

FalseworkTemporarystaging&workingplatforms.

Fill Materialwhichisusedfortheconstructionofembankments.

FineAggregate Fineaggregateismaterialpassingthe4.75mmsieve.

Footway An area normally adjacent to the carriageway provided for the use by

pedestrians.

Formwork Temporary boarding or sheeting erected to contain concrete during

placing,compactingandinitialhardeningincludingsupports.

Gabions Gabionsconsistofwovensteelmeshboxesormattressesfilledwithstone.

Gravel Gravel is naturally occurring, rounded, granular material with an average

dimension of more than 5mm and less than 300mm, (it does not apply to Gravel

WearingCourses).

PrimeCoat Abituminoustreatmentappliedtothesurfaceofanewlyconstructed

unbound

road

base

prior

to

the

construction

of

a

bituminous

layer

or

surface

treatment.


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Quality Control Procedures, and/or testing, carried out prior to, or during, the

construction of the Works for the purpose of ensuring compliance with the

requirementsoftheSpecification.

Quarry Anareawithindesignatedboundaries,approvedforthepurposeof

obtainingrock.

RoadBase Alayerofmaterialofdefinedthicknessandwidthconstructedontopof

the subbase, or in the absence thereof, the subgrade. A road base may extend

beyondthecarriageway.

Roadway Theroadwaycomprisesthecarriageway,shouldersandmedian.

Rock Amassofhardmineralmaterialwhich,whenexcavated,requirestheuseof

explosives,sawingorsplittingbymechanicalmeans.

Riprap Unboundedstoneprovidedtoprotectthesurfacesofslopesandthebeds

ofwatercoursesfromerosionandscour.

Scarify Loosenandbreakupsoilorexistingpavementlayersbymeansofamachine

fittedwithtines.

ShoulderBreakpoint Thepointonacrosssectionatwhichtheextendedflatplanes

of the surface of the shoulder and the outside slope of the fill and pavement

intersect.

SideDrain

A

longitudinal

drain

offset

from,

and

parallel

to,

the

carriageway.

Stabilisation The treatment of pavement materials by the addition of lime or

Portlandcement.

Subsurface Drain A covered drain constructed to intercept and remove subsoil

water.Itincludesallpipesandfiltermaterialinthedrain.

Surface Dressing The sealing or resealing of the surface of the carriageway or

shouldersbymeansofoneormoresuccessiveapplicationsofbituminousbinderand

chippings.

TackCoat Abituminoustreatmentappliedtothesurfaceofanexistingbituminous

layerpriortotheconstructionofanewbituminouslayer.

Topsoil A surface layer of soil which contains organic matter and is capable of

supportingthegrowthofvegetation.

Traffic Vehicles,pedestriansandanimalstravellingalongaroute.

Traffic Lane Part of a carriageway intended for a single stream of traffic in one

direction,whichhasnormallybeendemarcatedassuchbyroadmarkings.


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California Bearing Ratio (CBR)Test method toevaluate thebearingcapacityof the

soil.

MaximumDryDensity(MDD) Maximumdrydensityasdeterminedinthelaboratory

usingStandardCompaction.

OptimumMoistureContent(OMC) Optimummoisturecontentasdeterminedfrom

moisturedensityrelationshiptestsforStandardCompaction.

DynamicConePenetrometer(DCP) DeviceforfieldcheckingofinsituCBR,

AllkindsofSoil Thesoiltypeincludeclay,sand,gravel,boulders,hardrocksetc.

In this Specification the following terms, words or expressions shall have the

meanings hereby assigned to them. For ease of understanding certain cross

sectionalandpavementstructureelementsareillustratedinandFigure2&Figure2.

Figure1TermsandDefinitionsforRoadCrossSectionElements

ShoulderTraffic Lane

Shoulder Break

Point

Shoulder

Right of Way

Roadway

Carriageway

Traffic Lane

Side Drain

Sub-grade (Bottom

of Excavation)

Capping Layer

(if Required)

Roadbed (Existing

Ground under

Embankment)

Sub-grade (Top of

Fill Material)

Pavement Layers

Fill

Embankment

Limit of Roadbed


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Figure2TermsandDefinitionsforPavementStructure

Capping Layer

( i f required)

Sub-base

R o a d B a s e

Sub-grade

Surfac ing Layers

Base Co urse ( i f any )

W e a r i n g C o u rs e

RoadPavementLayers

Wherethe

definition

in

the

General

Conditions

of

Contract

differ

from

those

in

the

StandardSpecificationsandSpecialprovisionstoStandardSpecifications,theformer

shallapply.

103. ARRANGEMENTSFORTRAFFICDURINGCONSTRUCTION

103.1. General

Deletethissubsectionandsubstitutethefollowing:

FromthedateofCommencementoftheWorkstothedateof issueofTakingover

Certificate for the whole of Works as provided for in the contract the Contractor

shall

be

responsible

for

maintaining

the

uninterrupted

passage

of

vehicles

and

pedestriansalong theproject road/rightofway. The road isextensivelyusedand

dueattentionshallbepaidbytheContractortothemaintenanceandridingcomfort

ofallroads/detours/diversions.

Thetypesofmaintenancesituationsdescribedbelowinclude:

(i) Construction and maintenance of temporary detours (away from existing

roadembankment)requiredtobebuiltbecausethefullwidthoftheexisting

road is under construction or where works on cross drainage structures

requires theprovisionofatemporarydetour includingmaintenanceofthe

existingBridge.

(ii) Construction and maintenance of temporary diversions along an existing

embankmentwhen roadconstruction isprogressinghalfwidthbeyond the

proposedcenterline.

(iii) Maintenanceoftheexistingroadpriortocommencementofconstruction.

(iv) Maintenance of completed half width of road and shoulder opened to

traffic.

(v) Maintenance

of

traffic

on

exposed

granular

layers

in

a

carriageway

under

construction.


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TheContractorsresponsibilitiesshallincludetherectificationofanydeteriorationor

damage to the road, intersections or driveways, and drainage structures; due to

passageoftraffic,orrainsorflood.Thespecificlocationsofanydetourordiversions

shalldependupontheContractorsmethodofworkingandtheContractorshallbe

deemedtohavecoveredthesameinquotinghisrates.

Upon completion of a days work, or if the Works are to be left unattended, the

ContractorshallleavetheWorksinsuchaconditionsoastoallowthesafepassage

of traffic. The Contractor shall be responsible for complying with all regulations

relatingtothetemporaryclosureofroadsinSriLanka.

The Contractor shall provide and maintain for the period of construction, traffic

control and safety devices including Traffic Signs, Barricade Boards, Traffic Cones,

LightingDevicesetc.,atall locationswherework is inprogress inaccordancewith

Part II of the Manual of Traffic Control Devices, Road Development Authority,

Ministryof

Transport

and

Highways.

The Contractor shall so conduct his operations as to offer the least possible

obstruction and inconvenience to the public. He shall have under construction no

greaterlengthoramountofworksthanhecanproperlymanageatatimewithdue

regardtotherightsofthepublicinmaintainingafreeflowoftraffic.Unlessprovided

otherwise in this specification all traffic shall be permitted to pass through the

sections of the works, which have been completed and opened to traffic in

accordancewiththecontract.

Areaofexistingpublicroadway,trafficdiversionsordetoursshallnotbeobstructed

orused

in

any

way

by

the

Contractor

for

the

dumping

or

stockpiling

of

materials,

or

parkingofContractorsequipment

At least 15 days before commencing work on any section of the works the

ContractorshallsubmittotheEngineerhisproposalsforthemaintenanceoftraffic

including Working Drawings of traffic control arrangements, road signs, and any

temporary road works including detailed typical cross sections of proposed

detours/diversions indicating clearly the type of diversion, proposed material and

thickness of pavement structure and surfacing not inferior to specifications stated

hereinafter,andaprogramshowingthetimeoverwhichthediversionisrequiredto

carrythetraffic.

TheEngineermayrequirechangestotheContractorsproposalspriortoapproving

the proposal of temporary works and program. The standard of road surfacing

required may depend on the duration that the detour/diversion is required to be

operational. Approval to the Contractors proposal shall not take away the

Contractors obligation to provide for the uninterrupted passage of vehicles and

pedestrians at all times. Where necessary the Contractor shall strengthen by the

addition of pavement layers or by additional compaction or other means, any

detoursordiversionsthatmaybefound inadequatefortrafficnoextracosttothe

contract.

Materialand

equipment

temporarily

stored

on,

or

adjacent

to,

the

existing

roadway

shall be so placed, and the work at all times, shall be so conducted as to cause


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minimum disruption to the travelling public. Warning signs and barrels will be

requiredtoseparatetheContractorsmaterialandequipmentfromthepublic.

TheContractorwillnotbepermittedtohaveexcavationsopenonbothsidesofthe

roadataparticularchainagesuchthatthereisastepadjacenttopublictrafficwhich

may create a danger to traffic i.e. the excavation and backfilling with subbase or

base shall be flush with the existing road level on one side before excavation can

proceedontheothersideoftheroad.

Themaximum lengthofonewayworkingcontrolledbystop/goboardsorflagmen

shall be 500 metres. This length may be further reduced if visibility is reduced at

bendsonincreasedwhereappropriateattheEngineersdiscretion.

DuringconstructionforoperationswhichrequireonewaytraffictheContractorshall

beresponsiblefortheremovalofbrokendownvehiclesincludingvehiclesdamaged

inaccidentsandshallmaintainonewayuninterruptedtrafficflowatalltimes

As

an

alternative

or

in

addition

to

oneway

working,

traffic

diversions

may

be

arrangedwherethisisfeasible. SuchdiversionsshallbeapprovedbytheEngineerin

conjunction with the Traffic Police. The Contractor shall be responsible for the

provisionandmaintenanceofadequatesigningforthedurationofanydiversion.

The Contractor shall arrange for the Traffic Police to be in attendance for traffic

managementwheneverrequired.

Noseparatepaymentforthemaintenanceoranyothercostsincurredwhilstutilising

the diversion shall be made. All costs shall be deemed to be included in the

Contractorsrates.

Allearthandgravelbypassesandexistinggravel roadsusedasbypassesshallbe

maintainedinasafetrafficableconditionbytheContractor. Whereverrequiredby

the Engineer, the roads and bypasses shall be graded by motor grader or by

approved means to provide a smooth riding surface free of corrugation. All pot

holesshallbepromptlyrepairedbythecontractor. Drainageshallbekept ingood

orderandtheContractorshallwaterthebypassesasoftenasisnecessarytokeep

dustdown.

103.2. UsingPartoftheRoad

Nochange.

103.3. TemporaryDiversion

Nochange

103.4. TrafficSafetyandControl

Deletethissubsectionandsubstitutethefollowing:

The Contractor shall, after consultation with the Engineer, all the concerned Local

AuthoritiesandPoliceprepareaschemeoftrafficmanagementforcarryingoutthe

Works. SuchproposalsshallbesubmittedtotheEngineerforhisapproval,together

withwrittenapproval/noobjectioncertificatesfromtheconcernedauthorities,not

lessthan30daysbeforetheplannedimplementationofeachproposal.


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TheContractorshallnotcommenceanyworksaffectinganypublichighwayuntilall

approvedtrafficsafetymeasuresconformingtotheEngineerspriorapprovalhave

beenfullyimplementedtothesatisfactionoftheEngineer.

The Contractor shall take necessary measures for the safety of traffic and third

parties by providing, erecting and maintaining all signs, lamps, barriers, traffic

control signals, road markings, etc. in a clean and legible condition, and shall

position, reposition, cover or remove them as required by the progress of the

Works.Thebarriersshallbestrong.Redlanternsorwarninglightsshallbemounted

on the barriers at nights and shall be kept lit till sunrise. If the Contractor fails to

complywiththeserequirements,theEngineershallorderathirdpartytorectifythe

shortcomingsandshallrecoverthecostofsuchworksfromtheContractor.

a. Measurement

Arrangements for traffic during construction shall be measured per month for the

period

during

which

the

Contractor

maintains

the

arrangement

to

achieve

full

compliancewiththerequirementofSection103.

b. Payment

ThequantitiesmeasuredinmonthandtenthsofamonthwillbepaidattheContract

ratepermonth.

PaymentwillcommencefromthedaythattheContractorcommencesasectionof

road work on bridge work which require one way traffic working or when be

constructsadiversioninaccordancewithSection103.

Paymentwill

continue

while

such

one

way

working

or

traffic

diversions

are

in

proper

operationinaccordancewiththeContractorsprogrammeandtothesatisfactionof

theEngineer. Paymentwillceasewhennoonewayworkingortrafficdiversionsare

inplace. Thepay itemshallbedeemedtoincludeforcompliancewithSection103

forasmanylocationsthattheContractorisoperatingonewayworkingordiversions

fortrafficatanyonetimewhetherthisbeoneorseveral.

Noadditionalpaymentwillbemadeforcompliancewiththisclause.

Payitemsshallbe:

ItemNo. Description Payunit

103(1) Provision and Maintenance of

Arrangements for traffic during

construction. month.

104. CONTROLOFWORKS

104.1. AuthorityoftheEngineer

Nochange.


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ThecontractorshallreporttotheEngineerpromptlyandinwritingparticularsofany

accident or unusual or unforeseen the occurrences on the site, whether likely to

affectprogressoftheworkornot.

No payment would be made for services under this clause as the same shall be

deemedtohavebeenincludedinthegeneralobligationoftheContractor.

104.5. ProtectionofPublicServiceFacilities

Immediatelyonreceiptofthenoticetocommencetheworks,theContractorshall

make a survey to identify all surface and under ground Electric/Telephone poles,

service lines viz gas/fuel pipe, water line, survey Bench Marks (BM) and other

facilities etc. likely to impede/obstruct his works and shall submit a survey and

chainagewiselistoftheseobstructionstotheEngineer.

AnyservicesaffectedbytheWorksshallbetemporarilysupportedbytheContractor

who shall also take all measures reasonably required by the various bodies to

protecttheirservicesandpropertyduringtheprogressoftheworks.

Noseparatepaymentshallbemadeforthesurvey,identificationandanytemporary

support or protection of services, as it will be deemed to be under the general

obligationoftheContractor.

As directed by the Engineer, the Contractor will arrange for the relocation and/or

removalofpublicservicesbytheappropriateauthority.

Payment for any charges made by these authorities shall be made as shown in

Section203.

104.6. SafetyRelatingtoTemporaryStructures

Thecontractormustsubmitcompletedesigncalculationsplansandtechnicaldetails

ofallproposed temporary structures for the engineers priorapprovalbefore their

constructioncommences.TheEngineersapprovalwillnotrelieve thecontractorof

anycontractualliabilities.

The contractor must also ensure that all necessary safety regulations and

precautions

must

be

complied

with

during

the

erection,

use

and

dismantling

of

temporary structures no separate payment will be made for temporary structures

which are not scheduled in the Bill of Quantities. They will have been deemed to

havebeenincludedintherateitemslistedintheBillofQuantities.

104.7. SafetyRelatingtoNavigableWaterways

TheContractorshall inadditiontocomplyingwiththespecificrequirementsofthe

GeneralConditionsandwiththenationalstandardsoftheGovernmentofSriLanka

inrespectofnavigablewaterways,shallcomplywithallordersanddirectionsgiven

by the Engineer in respect of the safety of navigation and with requirements for

markingwatchingandlightinganystructure,craftorequipmentwhichmaybeusedintheconstructionoftheworks.


17/254


The contractor shall not lay down or provide permanent moorings for his floating

plant.TheContractorstemporarymooringsshallbepositionedandinstalledtothe

approval of the Engineer. Prior notification of their installation shall be officially

giventoallusersofthewaterway.

Spoil excavated or dredged by the Contractor shall not be deposited in such

locationsaswillinfillorcausesiltingupofexistinglowwaterchannels.

The Contractor shall without delay raise and remove or recover any material,

construction plant (floating or otherwise) or vessel belonging to or hired by him

whichmaybesunkstrandedorgoneadriftinthecourseofconstructioncompletion

ormaintenanceoftheworks,orotherwisedealwiththesameastheEngineermay

direct.

The Contractor shall take all necessary precautions and measures to avoid

interruption

of

service

of

the

existing

ferry

or

navigation

as

a

consequence

of

his

temporaryworksorconstructionofthepermanentworks.



104.8. EnvironmentalRequirement

The Contractor shall comply, with the Environmental Monitoring guideline in

accordance with the requirement of Statutes/Law of the Government of Sri Lanka

and International standards. In respect of controlling damage to the environment

andcontrolling

pollution

the

Contractor

shall

be

bound

to

follow

the

regulation/law

oftheGovernmentofSriLankaandanystatutorybodiesortherequirementofsuch

lawsofhisownhomecountrywhicheverismorestringent

(1) SpecificEnvironmentalConcerns

Thespecificenvironmentalconcernsare:

Emissionstoair(dust,smokeetc.)

Emissionstoland(solidandliquiddomestic&industrialwasteetc.)

Emissiontowater(dredgespoil,surface&foulwaterdrainageetc.)

Noiseandvisualpollution

These are now discussed one by one while it will be indicated to which particular

contracttheyareapplicable.

(2) Emissionstoair

Generationofdust

The spread of wind blown soil particles derived from unpaved haulageandaccess

roads,reclaimedareasandstockpilesofsoil,anddustfromrockhandlingmaycause


18/254


aproblemduringthedryseasonifstrongwindsprevail.Suchdustmaycausehealth

risksforthelabourersandforthepopulationlivingnearby.

As part of hisobligation to minimisedisturbance to otherusers.TheContractor is

required towaterunpaved roadsunderdryweatherconditionsand imposespeed

limitsonaccessandhaulageroads.

Thenatureofamajorearthworksoperation inevitablygivesrisetoadustnuisance

theeffectsofwhicharetobeminimizedasfaraspracticablebywateringandroute

and speed control of vehicles. The dust nuisance from the Contractors crushing

plantistobecontrolledbytheuseofwatersprays.

Airpollution

Exhaustemissionscausedbytheuseofvehicles,machineryandotherenginedriven

equipment used by the contractors should not exceed the exhaust emission

standardsassetforwardinthetablesbelow.

EmissionstandardvaluesforMotorVehicleExhaust

Parameters

determinates

Unit Standard

Value

Blacksmoke(1)

CO(2)

hydrocarbon(2)

NOx(2)

HattridgeSmokeUnit(HSU)

g/m3

percentvolume

g/m3

ppm

g/m3

ppm

65(3)

24

4(4)

2

180

2

600

(1) measuredattwothirdsofmaximumrotatingspeed

(2) whicheverisloweroutoftwovaluesexpressedintwodifferentunits

(3) Forvehiclesmorethan5yearsold,orthathavecompleted80,000kmthestandard

valueis75HSU

(4) Twoandtreewheelervehicleswithenginedisplacementlessthancm3thestandard

valueis5volumepercentage.

EmissionstandardvaluesforBlackSmokeEmissionfromboat/ship/vessel

Parametersdeterminats Unit Standard

Value

Blacksmoke(1) HattridgeSmokeUnit(HSU) 65(3)

(1) measuredattwothirdsofmaximumrotatingspeed

Theambientairqualityinandaroundtheworksiteshouldmeetthestandardvalues

for ambient air quality described in the following table. Regular maintenance of

engines and equipment is considered to be important for reducing emission and

emissions.


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Unlessapprovedotherwise,dredgedmaterialshallbedepositedonland.

Landdisposal

Testhaverevealedthepresenceofanytoxicorpollutingsubstanceintheriverbed

material.

the bunds or embankments for the hydraulic fill are to be of such quality that no

spillsorbreachesoccur,damagingneighboringland;

to prevent water logging of agricultural areas in the flood plains surrounding

hydraulicfillareas,drainsshallbeconstructedaroundtheembankmentstoevacuate

waterbygravitytotheriver;

Aquatedisposal

Theconcentrationofsuspendedsedimentintheeffluentfromtheexcavationworks,

dischargedintonaturalorexistingwatercoursesshallneverexceed4,000ppm.

Disposal ofdredgedmaterialshallonlytakeplaceonchar land ifnotoccupied foragriculturalpurposesorinthemajorriverchannelminimizingtheimpactonriverine

transportandonaquatic(organismslivinginorattheriverbottom);

(4) Noiseandvisualpollution

Visualpollution

Thecontractorshallensurealltemporaryworksarekeptneatandtidyandthesite

cleanedregularly.

Noisepollution

TheContractor,inplanninghisworksmustrecognizethedistinctionbetweennoise

pollutionasexperiencedbythevillagers livingaroundtheworksandnoisehazards

tothelabourworkingontheconstructionsites

Inthecaseofvillagersthemainformsofnoisepollutionwillbe:

- piledriving

- crushingplant

- generators

- haulage

and

compaction

equipment

- earthandrockmovingequipmentisofconsideration.

Theseactivitiesshouldbeconfinedtodaytimeoperationandnotafter10pm.

In the case of Contractors labour the impact of noise pollution on operators and

adjacentpersonnelcouldbemuchmoreofaproblem:

Ear protectors shall be used in any environment where the noise may exceed the

levelof80dB(A).

Noticeboardsmustbeplacedinareaswherethenoiseexceedsthislevelandwhere

earprotectors

must

be

worn.

Noise

levels

should

be

measured

if

any

doubt

exists.


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22/254


originalprogrammenecessarytoensurecompletionoftheworksoranypartthereof

withinthetimeforcompletionasdefinedinClause13oftheConditionsofContract

oranyextendedtimegrantedpursuanttoClause43oftheConditionsofContract.

Anyproposal to increasethetempoof theworkmustbeaccompaniedbypositive

stepstoincreaseproductionbyprovidingmorelabourandplantonSite,orbyusing

theavailablelabourandplantinamoreefficientmanner.

FailureonthepartoftheContractortoworkaccordingtotheprogrammeorrevised

programme,shallbesufficientreasonfortheEmployertotakestepsasprovidedfor

intheConditionsofContractandshallbeconstruedasnotexecutingtheWorks in

accordancewiththeContract.

TheapprovalbytheEngineerofanyprogrammeshallhavenocontractualsignificance

otherthanthattheEngineerwouldbesatisfiediftheworkiscarriedoutaccordingto

such programme and that the Contractor undertakes to carry out the work in

accordancewiththeprogramme,norshallitlimittherightoftheEngineertoinstruct

theContractor

to

vary

the

programme

should

circumstances

make

this

necessary.

The

aboveshallnotbetakento limittherightoftheContractortoclaimfordamagesor

extension of time to which he may be fairly entitled to in terms of the General

ConditionsofContractfordelayordisruptionofhisactivities.

ShouldtheEmployerrequestandtheContractorundertaketofinishthewholeorpart

of the Works ahead of the time originally required by the Contract, payment for

accelerating the work shall only be made if agreed to beforehand in writing and

accordingtothetermsofsuchagreement


deemedto

have

been

included

in

the

general

obligation

of

the

Contractor.

104.10. ProgressMeetings

Meeting will be held at intervals not exceeding one month between the Engineer

andthecontractortodiscusstheprogressoftheworksandanyproblemsthatmay

havearisen.ThecontractorshallgivetotheEngineeratthesemeetingsdetailsofhis

progresstodateinrelationtotheprogramme.



104.11. ReturnsandReports

At monthly intervals the contractor shall, inaccordance with his obligations under

Clause35oftheGeneralConditionsofContract,supplytotheEngineer,returnsof

labourandconstructionalPlantand,inaddition,ascheduleofthemainworkitems

in each section of the works showing progress during the previous week and

proposedprogressforthecomingweekandtotalprogresstodate.

At monthly intervals, and not later than the first week in every month, the

contractor shall submit to the Engineer a progress report for the previous month

thatshall

include,

but

not

be

limited

to

the

following:


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a) a programme marked up with any agreed amendments and showing the

actualpercentagecompletionofeachofthemain itemsofwork, insucha

way that comparison can be made with the scheduled percentage

completionofeachitem.

b) Weatherandotherconditions, includingdailytemperaturerange,humidity

rainfall,windspeedanddirection,riverlevelsetc.

c) Summaryofstaffandlabouremployedonthesite.

d) Schedule of Constructional Equipment on site with dates of arrival and

departureasappropriateincludingequipmentoperationalcondition..

e) Scheduleofprincipalmaterialitemswithdatesofplacingordersprogressof

manufacture,datesofdeliverytositeetc.

f)

Recordof

site

safety

All reports, statements, returns, diagrams ordrawings etc. which thecontractor is

required to submit to the Engineer during the progress of the works shall be

furnishedinquadruplicateunlessotherwisedirected.



104.12.Telecommunications

The Contractor shall provide and maintain telephone, fax and email and mobile

telephone

with

necessary

connections

and

facilities

in

the

site

office

during

the

periodoftheconstructionandmaintenance.TheContractorshallalsomaintainthe

telephonefacilitiesandpayallbillsforthewholeperiodasstatedabove.

104.13.CompactionGeneral

Compaction of materials shall be carried out in layers of uniform thickness using

approvedcompactionequipment includingcombinationsthereof ifrequiredbythe

Engineertoachievethespecifiedcompaction.

Compaction with rollers shall commence at the edges and progress towards the

centre

except

in

super

elevated

and

other

stretches

of

unidirectional

crossfall,

wheretherollingshallcommenceattheloweredgeandprogresstowardstheupper

edge. When commencing rolling from an edge, rollers shall run forward and

backwardalong theedgeseveral times till theedgestripbecomes firm toprovide

lateralsupport. Therollershallthenmoveinwardsparalleltothecentrelineofthe

road in successive passes with the tracks made by successive passes overlapping.

Rollingshallcontinuetillthespecifieddegreeofcompactionisachievedthroughout.

Whenrollingisterminatedatanedge,theproceduresimilartothatforcommencing

rollingatanedgeshallbeadopted. Duringrolling,thetopofthelayerbeingrolled

shall be checked for levels and crossfall and any irregularities in these regards,

correctedbyscarifyingthematerialintheaffectedareaandbyremovingoradding

materialsand

continuing

with

the

rolling

until

the

entire

area

being

rolled

has

been

broughttoastateofuniformanddesiredcompaction.


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104.14.Mixing&ControlofMoistureContentBeforeCompaction

Beforecompaction iscommenced (otherthan forbituminousmixes),each layerof

uncompactedmaterialshallbebrought to astateofuniformcomposition, texture

and

moisture

content

by

thorough

mixing

and

addition

of

water

or

drying

asrequired. TheContractorshallbedeemedtohavetakenaccountofthefactthatthe

materials encountered may vary widely with respect to their insitu moisture

contentsandthemoisturecontentsatwhichthematerialsaretobecompactedas

tobespecifiedseparatelyforeachtypeofmaterial. Accordingly,thematerialsmay

have to be wetted by adding water or dried to the required degree, along with

intimatemixingoftheentiremassofthematerials.

104.15.CompactionEquipment

Mechanical equipment shall be used for compacting materials by rolling, tamping

andwatering

the

materials

(if

needed)

before

compaction.

For

other

operation

such

as spreading, mixing and shaping, manually operated tools and equipment is

preferred on mechanical equipment alone or a combination of two shall be used.

The choice of equipment and the procedure of their use shall be subject to the

approvalof theEngineer,uponhisbeingsatisfiedabouttheireffectivenessonthe

basisoftrialcompactions.

ItshallbeunderstoodbytheContractorthatdifferenttypeofmaterialsarelikelyto

require different kind of compaction equipment, including successive applications

thereof,forachievingthespecifieddegreesofcompactionandtheContractorshall

keep available a fleet of compaction equipment of the requisite kinds, sizes and

number.

For compacting along narrow strips e.g. along widening of pavements and in

restricted areas e.g. behind bridge abutments, appropriate sized purpose made

compacting equipment will be required and the same shall be provided by the

Contractor.

Allequipmentshallbeofmodernconstructionbyestablishedmanufacturersandof

proven efficiency and shall be operated and maintained at all times by skilled

personnelinamanneracceptabletotheEngineer.

104.16.WaterandPowerSupplyArrangements

TheContractorshall

a. provideathisownriskandcostallwater, lightingandelectric powerrequiredfor

useintheworksatsuchfrequent locationsasarenecessaryandshallpayallcosts,

feesandcharges inconnectiontherewithandallowallsubcontractors freeuseof

thesame.TheContractorshallmakehisownarrangementforhisrequirementsof

potablewater,by


25/254


b. provideandmaintaintemporarywaterstoragetogetherwithanydistributionpiping

whichmaybenecessaryandsubsequentlyremoveallinstallationstotheapprovalof

theEngineers.

c. Provide,wirefor,andconnectlightingandpowerfortheworks.

d. Provide mechanically driven and operated water bowsers with effective spray

equipmentatalltimestoensurethatcompactioncanproceedwithoutanyholdup

onaccountofwatering.

104.17.DrainageduringConstruction

Allembankment,subgrade,shoulderandpavementlayersunderconstructionshall

beprotectedfromanyaccumulationofwaterduetorainsorothercausesandfrom

erosionduetoflowofwater.Allsuchlayersunderconstructionshallbeprovided

withcrossfalltofacilitatesurfacerunoffand,ifnecessary,thecrossfallshallbe

supplementedwithtemporarydrainstopreventaccumulationofwater.

104.18.PreventionofDamagestoEmbankments,SubgradeLayers,PavementLayersand

ShouldersinPosition.

Excavations for new constructions and placement of materials and their in situ

processingandcompactionfornewconstructionshallbedoneinsuchamannerand

with such precautions as not to cause any damage to embankments, subgrade

layers, shoulders and pavement layers in position including those preexisting and

intendedtoformpartoftheimprovedroad.

104.19.CompactionTrials

For demonstrating the efficacy of mixing and compaction equipment and the

working methods proposed to be used by the Contractor for different kinds of

materials, the Contractor shall carry out compaction trials before fullscale

construction on the road and during construction throughout the course of the

contractasrequiredbyandinclosecooperationwiththeEngineer. Basedonresults

of compaction trials and construction observation, the Engineer shall reserve the

righttodirecttheuseofparticularmixingandcompactionequipmentandmethods

and disallow the use of others for compacting different kinds of materials in

accordancewiththesespecifications.

104.20.CompactionControl

Afterthecompactionofeach layerofmaterial,fielddensitytestsshallbedoneon

the compacted material. For locating test points, successive compaction panels

coveringtheentireareaofworkshallbedesignatedinadvanceofcompaction.The

frequencyofthetests(intermsofsquaremetresofcompactedareaofeach layer

forwhichminimumonetestistobedone)shallbeseparatelyspecifiedfordifferent

kinds

of

material.

The

test

locations

shall

be

chosen

through

random

sampling

techniques.


26/254


AcceptanceofcompactionbytheEngineershallbebasedonthemeanvalueof5to

10determinationsoffielddrydensity.Themeandrydensityofasetoftestsshallbe

equal to or exceeding the specified value and the standard deviation shall not

exceed4percentofthemeandrydensity.Ifthisisnotsatisfiedtheentireworkto,

whichthesetofdensitytestsrelatesshallbetreatedasnonacceptable.

For material other than bituminous mixes, the compaction panels in which the

compaction work is found as nonacceptable shall be given recompaction

accompanied with scarifying and wetting/drying for the entire thickness of the

compacted layer to achieve the specified degree of compaction. In case of

bituminousmixes,thecompactionpanelsinwhichthecompactionworkisfoundas

nonacceptable shall be strippedoff and relaidwith freshbituminousmixand re

compacted.

104.21.DispersalofHaulingEquipment

Hauling equipment bringing materials to the site of work shall be dispersed

uniformly over the surface of the previously constructed layers in order to avoid

ruttingandunevencompaction. Thematerialsfromhaulingequipmentshallnotbe

dumpedinconcentratedheapsbutdepositedasevenlydistributedlayers.

104.22.ProtectiontoNewlyConstructedLayers

No traffic other than construction traffic shall be allowed on any earthwork or

pavementlayeruntilasurfacinghasbeenappliedeitherassinglesurfacetreatment

oranasphaltconcretelayer. TheapprovaloftheEngineershallberequiredbefore

trafficisallowedtopassovernewlyconstructedroad. Anydefectscausedbytraffic

passing over the construction layers shall be remedied in accordance with these

Specifications.

104.23.BridgeConstructionSequence

The Contractor shall programme the construction sequences for all bridges and

submit a written statement thereof for the approval of the Engineer. The bridge

construction sequence shall consider, as a minimum, each phase of bridge

constructionwithrespecttotrafficcontroltheeffectsontheexistingbridgesandthe

completedbridges. WheretheContractorproposestopartiallydemolishanexisting

bridge to allow for phased construction, he shall demonstrate to the Engineers

approvalthat thepartiallydemolishedbridge issafe forusebyhisequipmentand

otherroadusers.

Thecontroloftrafficduringtheconstructionofthebridgewillbeinaccordancewith

theSpecification,103. Wherethebridgeconstructionsequencehasbeenspecified

ontheDrawings,theContractorshallfollowthesequencespecified. TheContractor

mayproposeanalternativeconstructionsequenceprovidedhecandemonstrate,in

awrittenstatement,thatthesequenceisnotdetrimentaltotheWorksorroadusers

inanyway.


27/254


Noworkshallcommenceonabridgeuntilthewrittenconsenttotheconstruction

sequence has been given by the Engineer in compliance with clause 13 of the

GeneralConditionsofContract.

104.24.MaterialsTestingbyIndependentLaboratories

InadditiontotheSitetesting facilitiesdescribedSubSection130.8,theContractor

shallberesponsibleforarrangingforthefieldandoffSitelaboratorytestsindicated

as the responsibility of the Contractor in the Specifications, to be performed by

testing laboratoriesapprovedby theEngineer. TheContractor shallbe responsible

for all attendance on staff from these approved testing laboratories, including if

necessarytheprovisionoftransportforpersonnel,equipmentandtestspecimens.

104.25.SpecialandAdditionalTesting

Inadditiontothetestingdescribedabove,theEngineermayrequirefurthertesting

to be carried out. Such special and additional testing shall be arranged by the

ContractorunderthedirectionoftheEngineer.

104.26.StaffforMaterialsTesting

TheContractor shallprovidequalified laboratoryengineers,technicians,assistants,

labourers, etc. to carry out sampling and testing of materials in accordance with

theseSpecifications.LaboratorystaffshallbesubjecttotheapprovaloftheEngineer

andbeavailabletoassisttheEngineerwithmaterialstesting,asandwhenrequired.

104.27.CodesandStandards

Allthecodesofpractice,standardsandspecificationsapplicableshallbethe latest

editionwithallcorrectionsandincorporationsason30(thirty)daysbeforethefinal

dateforsubmissionofthetender.TheContractorwillsupplytwo(2)copiesofthe

codesofpractices,standards,onetotheEngineerandothertotheContractorsuse.

104.28.TestResultsandRecords

The Contractor shall maintain complete records of test results which may be

inspectedby

the

Engineer

at

any

time.

All

test

results

shall

be

recorded

on

standard

forms approved by the Engineer and shall be countersigned by the Engineer.

Completed forms shall clearly show the locations of samples, sampling dates and

testing dates. Samples shall be numbered serially at the time of sampling. The

Engineer may witness any sampling or testing carried out in the laboratory. The

Contractorshallhavetherighttowitnessanysamplingortestingcarriedoutbythe

Engineer.OncompletionoftheContracttheoriginalcopiesofalltestresultsshallbe

handedovertotheEmployer,viatheEngineer.

104.29.MeasurementandPayment

No

separate

payment

shall

be

made

for

compliance

items

under

this

section.Paymentshallbedeemedtobeincludedinthecontractorsrates.


28/254


105. CONTROLOFMATERIALS

105.1. SourcesofSupplyandQualityRequirements

Deletethetextofsubclause105.1andsubstitutethefollowing:

The Contractor shall be responsible for the provision of all materials required to

constructtheWorks. Allmaterialsalvagedand/orremovedfromtheworksremains

thepropertyoftheGovernment. TheContractorshallberesponsibleforthecostof

replacementintheeventofunauthoriseduseorremoval.

TheContractorshallberesponsibleforopeningupallquarriesandborrowareasand

shallorganisehismethodofoperationssothatonlymaterialsofatypeandquality

approvedbytheEngineershallbeselectedforuseintheWorks.

TheContractorisatlibertytoselectandusematerialfromhisownsourcesproviding

therequirementsofthissectionarefullymet.

105.2. StorageofMaterials

Deletethetextofsubclause105.2andsubstitutethefollowing:

Materialsshallbestored insuchamannerastoensurepreservationoftheirspecific

qualityandsuitabilityforuseintheWorks.Storedmaterialsshallbelocatedsothat

theyarereadilyavailableforuseandcanbeeasilyinspectedbytheEngineer.Private

propertyshallnotbeused forstoragepurposeswithout thewrittenpermissionof

the

owner

or

lessee.

Storage sites shall be free of vegetation and debris, free draining and if necessary

shall be elevated. Material placed directly on the ground shall not be used in the

Works unless the site has been prepared and surfaced with a 10 (ten) centimeter

layerofsandorgraveltothesatisfactionoftheEngineer.

Stockpiledmaterialshallbestored insuchamannerastopreventsegregationand

excessive moisture content. The maximum height of stockpiles shall be limited to

fivemetres.

Stockpiling of the various aggregates to be used for asphalt concrete, bituminous

surface treatment, penetration macadam or concrete will be permitted only in

separatestockpilesforeachnominalsizeofaggregate.Theseshallbeseparatedto

preventmixingofmaterials.

Aggregatestockpiles forbase courseandsubbase shallbe protected from rain to

preventsaturationoftheaggregateswhichwouldresultinareductioninthequality

oftheplacedmaterialoradverselyaffecttheplacementofthematerial.

105.3. HandlingofMaterials

Nochange.


29/254


105.4. ApprovalofSourcesofMaterial(Addthefollowing)

The sources of the materialsshallbe selected by theContractor, butapprovedby

the Engineer before the materials are haulage to be used on the site. For this

purpose, the Contractor shall furnish all relevant test data for representative

samples

from

each

source

area

as

desired

by

the

Engineer

and

also

affordopportunitiesfortheEngineertovisitthesourcesareas.

Notwithstandingapprovalofsourcesofmaterials,materialsasbroughttothework

siteforuseintheWorksshallbesubjecttoacceptanceorrejectionbytheEngineer

basedonqualitycontrolteststobeperformedbeforeuseinconstruction.

105.5. StockpilingofMaterials(Addthefollowing)

AllmaterialsbroughttotheSiteshallbestockpiledandstoredcarefullyatapproved

locations and in a systematic manner so as to prevent deterioration or mixing of

differentmaterials

or

contamination.

Materials

which

have

suffered

contamination

or deterioration due to improper storage shall not be used in Works and shall be

removedfromthestockpilingarea.

Thematerialsshallbefreefromforeign,organicoranyotherdeleterioussubstances

such as vegetation and perishable matters, or any other substance which in the

opinionoftheEngineermayaffectplacingmixingandcompactionofthematerialor

adversely affect the future performance of the Works. Material may be tested in

stockpilesbytheEngineertochecksuitabilityforuseintheWorks.

105.6. TemporaryStockpilingofMaterials(Addthefollowing)

Wheretheworkprogrammeissuchthatmaterialscannotbeplaceddirectlyintheir

required position or mixing of two or more materials is required to meet the

requirements of the Specification for a material the Engineer may authorise their

removal into temporary stockpiles. Stockpile sites shall be to the Engineers

approvalandshallbepreparedbyclearingandgradingfollowedbycompaction.

Thematerialshallbestockpiled insuccessive layersofapprovedthicknessoverthe

fullstockpileareatotheapproximatedimensionsrequiredbytheEngineerandshall

subsequentlybereloadedandplaced.

105.7. ControlTestsonMaterialDuringConstruction(Addthefollowing)

The Contractor shall use only such materials in construction as conform to the

requirements regarding composition, grading, physical properties and engineering

characteristics, as specified for different kinds of materials. For this purpose pre

constructioncontroltestsshallbecarriedoutonrepresentativesamplescollectedat

random of materials brought to construction site or at stockpileson the following

scale. The Engineer shall have the authority to have these tests at more frequent

intervalswherequalityofamaterialisindoubt.

Table1057A


30/254


TypeofMaterial TypeofTest

Qty.ofmaterialfor

whichminimumone

testoronesetof

testistobedone

Ordinaryfillfor

embankment

Particlesizeanalysis

Atterberglimits

4000cu.m.

4000cu.m.

Moisture density

relationship

CBR Test (set of 3

specimens)

4000cu.m.

4000cu.m

Selectedfillfor

granularcapping

layer


Atterberglimits

2000cu.m.

2000cu.m

Moisture density

relationship

2000cu.m.

CBR test (set of 3

specimens)

2000cu.m.

Aggregatesfor

granularsubbase


PlasticityIndex

500cu.m.

2000cu.m.

Moisture density

relationship

2000cu.m.

CBR Test (set of 3

specimens)

2000cu.m.

Los Angeles abrasion

test

2000cu.m.

WaterAbsorption 2000cu.m.

Aggregatesforbit

roadbaseand

wearingcourse


PlasticityIndex

250cu.m.

1000cu.m.

Waterabsorption 1000cu.m.

Los Angeles abrasion

test

1000cu.m.

Bulkspecificgravity 1000cu.m.

Flakinessindex 1000cu.m.

Moisturecontenttestbeforecompactionofmaterialsshallbecarriedoutonalayer

by

layer

basis

for

each

compaction

panel

on

the

following

scale:

Table1057B

TypeofMaterials

Areaoflayerundercompactionfor

whichminimumonemoisture

contenttestistobedone

Ordinaryfillforembankment 1000m2

Granularcappinglayer 750m2

Aggregatesforgranularsubbase 500m2

Moisture

content

test

shall

be

repeated

whenever

the

moisture

content

of

the

material changes due to drying or wetting or if there be uncertainty (e.g. due to


31/254


variability)intheresultsofearliertests.

105.8. MaterialTesting(Addthefollowing)

The

physical

properties

and

engineering

characteristics

of

the

materials

mentioned

in these specifications shall be established through appropriate tests on

representative samples collected in such manners and at such frequency as

describedinTable1057AorasdirectedbytheEngineer.Thetestsshallbecarried

out in accordance with test methods as mentioned in these specifications or as

requiredbytheEngineer.

Moisture density relationship tests on fill materials, sands, soilsand mixes and

aggregatesofdifferentkindshallbecarriedout(asperAASHTO:T180).

105.9. ApplicabilityofGeneralSpecifications(Addthefollowing)

These General Specifications shall apply in combinations with specifications in

particular forembankments,pavement layersandshoulders,etc,givenseparately.

In case of any conflict between the General Specifications and the separate

specificationsgiveninparticular,theprovisionsofthelatershallgovern.

105.10.Payment(Addthefollowing)

Noseparatepaymentshallbemadeforitemsunderthissection. Paymentshallbe

deemed

to

be

included

in

the

Contractors

rates.

106. GENERALRULESFORMEASUREMENTANDPAYMENT

Addthefollowing:

Unless stated to the contrary, any thickness, area or volume in any items of the

Worksshallbemeasuredonlyonfinishedworkaftercompaction.

Thepayments forthevarious itemsshown intheBillofQuantitiesshallconstitute

fullcompensationforperformingalloftherequirementsoftheContractfortheitem

of

work

as

specified

including

furnishing

all

necessary

materials,

labour,

tools,

equipment,supplies,testing,andincidentals.

TheContractorshallbedeemed tohavecompliedwiththerequirementsofBillof

Quantities, Contract Rates, Pay Items, Material at site, Provisional Sums, as listed

below.Contractorshouldalso fulfilwith the requirementofGeneralConditions of

Contractclause12SufficiencyofTender.

BillofQuantities

ThequantitiessetoutintheBillofQuantitiesareestimatedquantitiesandareused

for the comparison of Tenders and awarding the Contract. It must be clearly

understoodthatonlytheactualquantitiesofworkdoneormaterialssuppliedwillbe


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TheContractorshallfurnishtotheEngineersuchreceiptsorothervouchersasmaybe

necessarytoprovetheamountspaidand,beforeorderingmaterials,shallsubmitto

theEngineerquotationsforthesameforhisapproval.Inrespectofsuchoftheworks

executedona day worksbasis, theContractorshall,during thecontinuanceofsuch

work,delivereachdaytotheEngineeranexactlistofthenames,occupationandtime

ofallworkmenemployedonsuchworkandastatementshowingthedescriptionand

quantity ofallmaterialsandequipmentusedother than the Contractors equipment

which is included in the percentage addition in accordance with such day work

schedule. Each list and statement will, if correct, or when agreed, be signed by the

EngineerandacopyreturnedtotheContractor.

TheContractorshallnotbeentitledtoanypaymentunlesssuch listsandstatements

havebeen fullyandpunctually provided.Where theEngineerconsiders that forany

reasontheprovisionofsuchlistswasimpracticableheshallneverthelessbeentitledto

authorisepaymentforsuchworkprovidedthat,suchworkorvaluethereofshall,inhis

opinion,be

fair

and

reasonable

106.1. Overhaul

Nooverhaulonmaterialsshallbemeasuredorpaid. Thecostofhaulageisdeemed

to be included in tendered rates for supply of materials in accordance with

ConditionsofContractClauseNo.12

106.2 MeasurementofPavementforAreaandVolumeBasedPayment

a. AreaBasis

Add

the

following

paragraph:

Dimensionsusedtodetermineareashallbemeasuredhorizontally.

b. VolumeBasis

Nochange.

106.3 ScopeofRatesforDifferentItemsofWork

Nochange.

106.4 FacilitiesforVerificationofMeasurements

Nochange.

106.5 SelectionofPayItems

Nochange.

106.6 SubDivisionsWithinPayItems

Nochange.

106.7 SubstantialCompletionoftheWorks(Addthefollowing)

The Contractor shall note that the Engineer reserves the right not to certify the

Worksto

be

"substantially

completed"

as

required

by

the

General

Conditions

of

the


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Contract,unlessthefollowingportionsoftheWorksarecompletedaccordingtothe

Specifications:

(a) all bituminous seal works or, where a seal is not included, the uppermost

gravellayer.

(b) all drains and drainage structures, for the construction of which timeous

instructionsweregivenbytheEngineer.

(c) finishingofallsupportorretainingstructures.

Opening of individual sections or lots shall not entitle the Contractor to receive a

CompletionCertificateunlessthesectionsareseparately identified inthecontractor

qualifiesotherwiseintermsofClause46oftheConditionsofContract.

107. SIEVEDESIGNATIONS

NochangestoStandardSpecifications.

108. CONTRACTORSESTABLISHMENTONSITE

108.1. Office,EquipmentTestingFacilitiesetc.

It is the Contractors responsibility to acquire land for the siting of all his offices,

accommodation,stores,testingfacilities,equipmentyardsandworkshopsandforall

temporary

works

and

for

the

reinstatement

of

such

land

on

completion

of

the

Contracttothesatisfactionoftheowners. TheContractorshallobtaintheapproval

of the Engineer to the siting of offices, accommodation, stores, testing facilities

equipmentyardsandworkshopsbeforesuchlandisacquiredandheshallindemnify

the Employer against all claims and charges in respect of the occupation, use and

reinstatementoftheland.

The Contractor is solely responsible for the satisfactory accommodation of all his

employeesandforcomplyingwithallregulationsandrequirementsinthisrespect.

108.2. LegalrelationsandResponsibilitytothePublic

The Contractor shall take the steps necessary to comply with the terms of the

Conditions of Contract, particularly in respect of the insurances and indemnities

required,andheshallcomplywithallregulationsofstatutoryauthorities.

108.3. Measurement

TheContractorsSiteEstablishmentshallbemeasuredunderthreeitems:

(a)asa lumpsum forEstablishingofall the facilitiesonoradjacenttothe

SitethattheContractordeemsnecessaryforfulfilmentofallhisobligations

under

the

Contract.

These

facilities

shall

include

but

not

be

limited

to:

Transportof plant,buildings, temporary facilities tothesite,Provisionand


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erection of temporary buildings, office facilities on the site, Provision of

access roads, hard standings etc. within construction camps, Airfares,

temporary accommodation during the mobilisation phase, permits, bonds

etc. necessary to establish expatriate supervisory personnel upon the site,

Establishmentoftestingandprocesscontrolfacilitiesonthesite,Erectionof

contract signboards, Provision of transportation facilities for supervisory,

administrativeandtechnicalpersonnel,Provisionofhousingforsupervisory,

administrativeandtechnicalpersonnel.

The Contractors price for the lump sum shall be a true reflection of the

Contractors costs taking into account the Advanced Payment and the

Contractorshallprovideabreakdownofthe lumpsumwithproofofactual

coststojustifythelumpsumpricetotheEngineer.Paymentformobilisation

shallbemadewhentheContractorhasestablishedhimselfuponthesiteto

thesatisfactionoftheEngineer.

(b)by

month

or

weeks

for

maintaining

the

Contractors

Site

Establishment

foras longasnecessarytoexecuteandcompletetheWorks. Themonthly

rateformaintainingthefacilitiesshallbedeemedto includeforbutnotbe

limitedto:Salaries,leavefares,gratuitiesandmiscellaneousentitlementsof

supervisory personnel, technical personnel, surveyors, administrative

personnel, security personnel, store men etc, Maintenance of offices,

buildings, laboratories and transportation facilities for administrative,

supervisory and technical personnel, Communications, Maintenance of

housingforadministrative,supervisoryandtechnicalpersonnel,Overheads

off site, Financing charges, Compliance with the provisions of the contract

whetherspecifiedorimplied.

This item shall not include for maintenance or depreciation of plant, the

costofwhichshallbedeemedtobeincludedintherelevantworkitem.

(c)Paymentfordemobilisationshallbecompensationinfullforthecostsof

removingplant,equipment, facilitiesandpersonnel fromthesiteandshall

include (but not necessarily be limited to):Transport of plant, buildings,

temporary facilities from the site and export if required, Dismantling and

removal of all temporary facilities on the site, Airfares for repatriation of

expatriate personnel, Removal of contract sign boards, Restoration of all

constructioncamp

areas

to

asatisfactory

condition.

108.4. Payment

Item Unit

108(1) Mobilisation LumpSum

108(2) MaintenanceoftheContractor's

Establishment Month

108(3) Demobilisation LumpSum


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109. INFORMATIONFURNISHEDBYTHEEMPLOYER

Certain informationcontained intheseContractdocumentsorprovidedseparately

prior to Tender by the Employer is being offered in good faith but the type of

informationsupplied,

no

guarantee

can

be

given

that

any

or

all

of

the

information

is

correctorrepresentativeoftheactualconditions.

TheEmployeracceptsnoliabilityforthecorrectnessorotherwiseoftheinformation

supplied or for the resulting damages, whether direct or consequential, should it

proveduringthecourseoftheContractthatthe informationsupplied iseithernot

correct or not representative. Any reliance which the Contractor places on this

information shall be at his own risk and the Contractor shall be deemed to have

checkedthecorrectnessoftheinformationpriortosubmissionofhisTender.

110. WORKMANSHIPANDQUALITYCONTROL

The Contractor in responsible for producing work which conforms in quality and

accuracyofdetailtotherequirementsoftheContractseesuchclause6ofGeneral

Conditions of Contract and the Contractor shall, at his own expense, institute a

quality control system and provide experienced engineers, foremen, surveyors,

materials technicians,other techniciansand other technicalstaff, togetherwithall

transport, instrumentsandequipment,toensureadequatesupervisionandquality

controloftheWorksatalltimes.

Thecostofallsupervisionandqualitycontrol, includingtesting,carriedoutbythe

Contractor shall be deemed to be included in the rates tendered for the related

items

of

work,

except

where

as

specifically

provided

for

in

the

Contract.

TheContractorsattention isdrawntotheprovisionsofthevarioussectionsofthe

Specificationsregardingtheminimumfrequencyoftestingthatwillberequiredfor

qualitycontrol. TheContractor shall,athis own initiative, increase this frequency

wherenecessarytoensureadequatecontrol.

On completion of every part of the Works and submission to the Engineer for

examination,theContractorshallsubmittotheEngineertheresultsofallrelevant

tests and survey checks that he has carried out indicating compliance with the

Specifications.

For cement, bitumen, mild steel deformed bars, high tensile steel, prestressing

materials, bearings, and similar other materials the Contractor shall furnish the

manufactures test certificates to the Engineer. When required by theEngineer to

carryoutsomeessentialtestsat themanufacturesplantsorat laboratoriesother

thanthesitelaboratory,thecostofsamples,sampling,testingandfurnishingoftest

certificatesshallbebornebytheContractor.

Themethodofsamplingandtestingofmaterialsshallbeasrequiredunderrelevant

clausesstipulatedintheseSpecificationsorasapprovedbytheEngineer.

TheContractorshallberequiredtodemonstratetheadequacyoftheequipmentfor

each

operation

to

establish

its

their

capability

to

achieve

the

requirements

to

the

SpecificationtothesatisfactionoftheEngineerbeforecommencementofthework.


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All equipment provided shall be of proven efficiency and purpose made for the

requiredoperationandshallbeoperatedbyskilledoperatorsandmaintainedatall

timestoperformitsproperfunctioninamanneracceptabletotheEngineer.

No