Bengaluru Water Supply And Sewerage Board Tender

No.4 - Providing and fixing DI Resilient seated soft sealing SLUICE VALVE of variouis dia. with body bonnet of Ductile Iron (DI) conforming ti IS-1865 with the latest amendments and of grade GGG 40/50, shaft of stainless steel, wedge fully rubber lined with EDPM seals of NBR and the valves should be vacum tight and 100% leak proof with face to face dimensions as per IS 14846-2000 with the latest amendments only. The stem sealing should be with toroidal sealing rings (minimum 2 " O " rings). Body and bonnet should be coated with Electrostatically applied Epoxy Powder Coating with minimum coating thickness of 250 micron both inside and outside. The rate is inclusive of cost of valves, T.P set, galvanized bolts & nuts and rubber insertions etc. but excluding earth work. For PN-10: (Note: TP set should be considered only for DI pipes estimate. For MS pipes estimates, TP sets cost of corresponding dia shall be deducted from the SR rates of valves and provision for corresponding dia MS flanges should be made in the estimate.) etc. complete (a) For sluice valve of PN 16 and 100mm

No.5 - Providing, fabrication, supply & fixing at site of various diameter M.S. Flanges as per IS standards to fix sluice valves as per sketch. The rate is inclusive of all materials, labour, consumables, hire charges for tools & tackles, welding equipment etc complete as per instructions of the Engineer in charge. (a) Flanges of 100mm dia and 10mm thick

No.6 - Providing, fabricating, supplying and fixing at site various diameterMS MJ ends with dummy plates (END CAPS) to suit CI / DI spigotsend as per the sketch. The cost is inclusive of all materials, i.e, rubber ‘O’ rings, flanges, bolts and nuts, dummy plates, consumables, hirecharges, tools and welding equipments, lead and lifts, etc. completeas per the instructions of Engineer in charge. (a) for CI/DI pipes of 100mm dia

No.7 - Providing Ductile Iron Push on special confirming to IS 9523:2000 - All D.I. Flanged MJ COLLAR. For 100mm dia

No.8 - Manufacturing, providing, transporting, rolling, lowering, laying and jointing, testing and commissioning of MS specials of minimum 8 mm thick conforming to IS 7322:1985 with latest amendments, perfect linking and welding of joints to correct position including cost and conveyance of materials with all lead and lifts, cost of all labour and giving satisfactory hydraulic test as per IS 3589:2001 with latest amendments for test pressure and working pressureboth at factory and site etc., complete as per detailed specifications with inside lining two coats of food grade epoxy painting of approved make witheachcoat of 250 micron, thick (after dry) over one coat of food grade epoxyprimer of approved make with minimum of 50 micron thick (after dry) and outside 25mm thick coating in CM 1:3 by providing 50 x 50mm weld mesh including loading and unloading of pipes for the following category to suitPSC / MS / CI / AC / DI / PVC pipes. The rates are inclusive of all taxes and duties. The weight of the MS shell only be considered before lining and coating for arriving at the rate.The thickness of plate will be specified by the engineer (contractor will make his own arrangements for procuring water for testing) Pipe bends,branches, tail pieces, reducers etc. for upto 500mm dia pipes

No.9 - Providing Bedding or Backfilling using approved stone dust / quarry dust of size not exceeding 5.6 mm for the pipe line trenches including watering and consolidation etc., complete with all lead and lifts as per specification and as directed by the engineer incharge, after obtaining the approval of the Chief Engineer

No.10 - Removal of Unserviceble soil with disposal upto suitable distance as directed by engineer in chargeof work.

No.11 - Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specification including premixing the Material with water at OMC in mechanical mix plant carriage of mixed Material by tipper to site, laying in uniform layers with paver in sub- base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density

No.12 - Dewatering the sewage/ stormwater by using required HP submersible pump for work consideration 5HP Pump

No.13 - Supplying and fixing kinetic AIR VALVE PN 16.0 for automatic discharge of accumulate air during working condition, conforming to IS 14845 / EN 1074-4. Body and bonnet of DI conforming to IS-1865 of grade GGG-40/50, seals are made of approved EPDM, SS 304 float, guideand internals. Flange drilling according to IS-1538 with appurtenances. complete. Body and bonnet shall be coated with electrostatically applied epoxy powder coating with a coating thickness of 250 micron both inside and outside. (a) for K Air valves 100mm dia

No.14 - Providing, filling and laying of sand bags filled with sand / clay for diversion of sewage during execution of work.

No.15 - Dismantling of existing structures like culverts, bridges, retaining walls and otherstructure comprising of masonry, cementconcrete, wood work, steel work, includingT&P and scaffolding wherever necessary,sorting the dismantled material, disposalof unserviceable material and stacking theserviceable material with all lifts and lead Prestressed / RCC grade M-20 & above

No.16 - Providing and laying in Cement Concrete for all Basement & surface level works, return walls, retaining walls, sunken floors etc. The granite/trap/ basalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed with super plasticisers, laid in layers, well compacted using needle vibrators, providing weep holes wherever necessary, including all lead & lifts, cost of all materials of quality, labour, Usage charges of machinery, curing and all other appurtenances required to complete the work as per technical specifications