Bengaluru Water Supply And Sewerage Board Tender

A04 - Hard rock (blasting prohibited) Depth upto 1.50 m

A05 - Providing and laying Ductile Iron pipes of class conforming to IS8329:2000 with latest amendments, conveying to work site, rolling and lowering into trenches, laying true to line, level and perfect linking at joints, testing and commissioning, including loading and unloading at both destinations, cutting of pipes wherever necessary, jointing with DI specials (excluding cost of specials) and rubber gaskets, cleaning the socket and spigot end with soap solution, applying soft soap to the socket and spigot ends before insertion of rubber gaskets, jacking and fixing in perfect conditions etc. The cost to include soap solution, soft soap,waste etc. and giving necessary hydraulic test to the required pressure as per ISS with all lead and lifts and cost of all jointing materials. (The contractor will make his own arrangements for water for testing. Earth work excavation in trenches to be measured and paid for seperately) 100mm dia K9 Pipes

A06 - 150mm diaFor K9 Pipes

A07 - Manufacturing, providing, trasporting, rolling, lowering, laying, jointing & testing and commissioning of MS specials of minimum 8mm thick such as bends, tail pieces, reduces etc. conforming to IS-7322:1985 with latest amendments and including perfect linking and welding of joints to correct position includng cost and conveyance of materials with all lead and lifts, cost all labour and giving satisfactory hydraulic test as per IS:3589:2001 with latest amendments for test pressure and working pressure both at factory and site etc. complete as per detailed specifications with inside lining two coat of food grade epoxy painting of approved make with Each coat of 250 micron thick (after dry) over one coat of food grade epoxy primer of approved make with minium of 50 micron thick (after dry) and outside 25mm thick coating in CM 1:3 by providing 50x50mm weld mesh including loading and unloading of the pipes for the following category to suit PSC / MS / CI / AC / DI / PVC pipes. The weight of MS shell only by 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 for: Note: 1) For small works where the C.M. lining is not practicable for inside surface of the pipe, food grade expoxy painting of two coat over one coat of epoxy primer may be proposed and got approved. 2) The above rates are applicable only for pipe works etc.complete

A08 - 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 hould 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. 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. completeFor PN-16: 100mm dia

A09 - 150mm dia PN 16

A10 - Providing and fixing of Single/ Double chamber triple function tamper proof (Both the orifces to be housed in the single chamber) Air valves with Body and cover in Ductile cast iron of grade GGG 40/ 50. All internal parts such as float, shell with appurtenances., all cover bolts of austenitic alloy / SS 304 steel, DN 50 float of HOSTAFLON / SS 304 and gaskers and seals of EPDM. Epoxy powder coating (EP-P) inside and outside colour blue RAL5005. The valves should be designed for all the three functions i.e., 1. Large orifice for venting of large air volumes on start up. 2. Large orifice for intake of large air volumes. 3. Small orifice for discharge of pressurized air during operation. etc. complete. For PN 10.0 100mm dia

A11 - For PN 10.0 150mm dia

A12 - Refilling available earth around trenches/pipelines, cables in layers not exceeding 20 cms in depth, compacting each deposited layer by ramming after watering with a lead upto 50 m, and lift upto 1.5 m. Including cost of all labour complete as per specifications

A13 - Removal of Unserviceable Soil with Disposal upto a suitable distance as directed by the Engineer incharge of work

A14 - Spreading of stone dust: Supplying and providing stone dust in the station yard or whereever required including watering, ramming, conslidiating and dressing. the rates includes the cost of the material, labour charges, required tools and plants etc, complete. work shall be carried as per instruction of engineering in charge of works as per standard proceudre.

A15 - Providing and fixing Chlorinated Polyvinyl Chloride CPVC pipes, having thermal stability for hot and cold water supply including all CPVC plain and brass threaded fittings. This includes jointing of pipes and fittings with one step CPVC solvent cement, trenching, refilling and testing of joints, boring and tapping the main with brass ferrule with providing and fixing of non corrosive Engineering plastic mould strap saddle with stainless steel 304 threaded metal inserted with all necessary accessories fix the straddle , making bore in the drain, wall floor dismantling and restoring the same, road surface restoration to its original surface type and condition etc. complete as per direction of Engineer in Charge 15 mm 20mm connection

A16 - For connection pipe length beyond 3.0 mtrs for every 1 mtr. or part thereof

A17 - Trial pits excavations carried out with the approval of the Engineer to investigate pipe network details, connectivity, etc. Rate to include road cutting, excavation, backfilling, disposal and road reinstatement of original surface for the following diameters upto 2.5m depth to invert of pipe as per specification and as directed by Engineer. This item to be used only with the written approval of the Engineer. Depth not exceeding 1.5m

A18 - Dismantling size stone masonry in clay mortar and stacking the size stone with in a radius of 50 m and removing the debries to a distance upto 200 m cost of labour charges complete and as directed by the Engineer.

A19 - Reconstruction of stone masonry with cement mortar 1:6 with the available stones including cost of labour, curing etc., complete

A20 - Removing and refixing of B.S. Slabs/RCC Slabs of drain and refixing after completion of the work with all tools and tackles

A21 - 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/grader in sub-base / base course on well prepared surface and compacting with vibratory roller to achieve the desired density.

A22 - Prime Coat over WMM/WBM Providing and applying primer coat with SS1 grade Bitumen Emulsion on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70 kg/m2 using mechanical means.

A23 - Providing and laying Dense Graded Bituminous Macadam with 120 TPH capacity hot mix plant batch type using crushed aggregates of specified grading, premixed with bituminous binder VG-40, @ 4.0 per cent by weight of total mix and filler, transporting the hot mix to work site, laying with mechanical paver finisher to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRTH specification clause No. 505 complete in all respects.

A24 - Providing and applying tack coat with RS1 Bituminous Emulsion using emulsion pressure distributor at the rate of 0.20 kg/m 2 on the prepared bituminous surface cleaned with mechanical broom.

A25 - Providing and laying Bituminous Concrete with 120 TPH capacity hot mix plant batch type using crushed aggregates of specified grading, premixed with bituminous binder VG-40 @ 5.2 per cent of mix and filler, transporting the hot mix to work site, laying with mechanical paver finisher to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MORTH specification clause No. 507 complete in all respect