Page 17 of 35 TECHNICAL SPECIFICATION PART III, CIVIL, ARCHITECTURAL AND STRUCTURAL WORKS CONSTRUCTION OF NEW ELEVATED 11KV MAIN INTAKE (72MW) RAUDHATAIN-E SUBSTATION 3.19.5Constructpathwayand heavyduty interlock pavingall around the substation building asshownonrelevantdrawings.Thepathwayshallbemadeof80mmthickpre-cast plainconcretecolouredinterlockingtypepavingtileslaidover50mmthickevenly spread layer of sand on compacted gatch.Pre-cast kerb stone shall be provided at the edgeofpathway.Alternatepiecesofkerbstonesshallbepaintedinblackandwhite enameltrafficpaintsuitableforoutdoorapplicationaskerbstonepaintfroman approved manufacturer. Remaining external areas within the boundary wall enclosure shallbepavedwith80mmthickheavyduty,pre-castplainconcrete,black, interlocking type paving blocks laid over a 50 mm thick evenly spread layer of sand oncompactedgatchslopingawayfromthesubstationbuildingasindicatedonthe relevantdrawingtowithstandtheheavyvehicleload.Pre-castpavingtilesand kerbstonesshallbemanufacturedbyNationalIndustriesCo.orequivalentapproved by the Company. 3.19.6Supply,fabricateandinstallsteelladderswithsafetycageinaccordancewithKOC Standard drawing No. 55-02-57.Location and number of ladders shall be as shown on relevant drawings. 3.19.7Supply,fabricateandinstall3diaschedule40pipehandrailsforplatformsandstair cases.Horizontalandverticalmembersofthehandrailshallbejoinedwithmin6.0 mmfilletweldovercompletelengthofthejoint.Weldshallbefreefromrutsand burrs.Thehandrailshallbepaintedwithminimumone(1)coatofredoxideprimer and two (2) coats of gloss enamel paint of blue colour from an approved Manufacturer.The Contractor shall submit fixing details for the Superintendents approval. 3.19.8ConstructReinforcedCementConcrete,non-slippery,accessrampsasshownonthe drawingsbyconsideringtheheavyvehicleloadduringinstallationandmaintenance operations.Therampshallbetreatedwithconcretehardenerimmediatelyafter concreting or before the initial setting time of the concrete to have firm bonding as per Manufactures recommendation. 3.19.9Design,SupplyandConstructboundarywallinaccordancewithrelevantdrawings.Columns, ground beams and coping shall be fair-faced concrete painted as same as that ofsubstationbuildingbeams/columns.In-fillshallbedarkyellowcolour222mmx 108 mm x 67 mm sand lime brick with thickness as shown in the project drawings to matchthecolourofsandlimebrickofthesubstationbuildingbyNationalIndustries Company or approved equal.Supply fabricate and install three (3) numbers 7.2 metre wide double leaf steel gates and three (3) numbers of pedestrian gates as shown in the relevant drawings. 3.19.10Design, Supply, fabricate and install pre-engineered car parking shelter for parking six (6)carsintheMainEntranceatthelocationshownontherelevantdrawings. ConstructionofcarparkingshedshallbeinaccordancewithKOCStandarddrawing No. 55-02-67.Also, six (6) nos. of asphalted open car parking shall be constructed on the rear entrance as shown in the drawings.