Bengaluru Water Supply And Sewerage Board Tender

A04 - do Depth exceeding 3 m, but not exceeding 4.5 m

A05 - Earth work excavation for Foundation by Mechanical means depth upto 1.50m,as per drawing and technical specifications, including setting out, shoring,strutting, barricading, caution lights, including cost of explosives, dressingof excavated surfaces, disposing off or levelling the excavated stuff or sorting& stacking the selected stuff for reuse in a radius of 50 m and lift upto 1.5m including cost of labour, blasting materials, tools, usage of Machinery & allother appurtenaces required to complete the workOrdinary/soft rock (without requiring blasting) Depth up to 1.5 m

A06 - Do Depth exceeding 1.5 m, but not exceeding 3 m

A07 - Do Depth exceeding 3 m, but not exceeding 4.5 m

A08 - Providing S&S RCC SPUN / VIBRATED CAST PIPES (REINFORCED) pipes NP-3 Class conforming to IS:458-1988 with latest amentments using ordinary portland cement, for sanitary works and conveying to work site, rolling and lowering into trenches, laying true to line and level including loading and unloading at both destinations and jointing of pipes and specials, perfect linking of joints with jack to correct position including cost of jointing materials, i.e, rubber rings conforming to IS: 5382 for S&S RCC pipes, with all leads and lifts as directed and giving necessary hydraulic test as per ISS to the required pressure and commissioning etc. complete. (Contractor will make his own arrangements for procuring water for testing). Before the execution of the work, the contractor shall carry out the survey. 300 mm dia RCC LINE)

A09 - 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

A10 - Excavating of ramming/jacking/driving pit and receiving pit of size5.00m(length) x 3.00m (breadth), up to 6.00 m depth in all soil strataincluding shoring and strutting including cutting of Asphalt/CC/Mac- adam road surface and removing the excavated stuff with all lead andlifts. The work includes formation of CC/RCC of 1:3:6 with or without20mm steel with suitable spacing. The work also to receive the impactsdriving pushing operation of encasing pipe. The cost includes driving the horizontal bore by pushing/jacking methods (trenchless technologymethod) by using construction agencies' cranes, jacks, jacking materi-als, generator, welding machineries, compressor, jack hammer and otherequipments etc., without interfering and causing any hindrance to thmovement of traffic or any other vehicles, without any disturbances tothe railway/road/canal formation etc., The cost also includes bailing /pumping of water where ever necessary without affecting any installation like water supply and sanitary pipeline/telephone cable, electric cablesetc. The work comprises of water for curing, carriage and fixing charges,concrete up to plinth for erecting and conducting the hydraulic push-ing arrangements apart from passing through and scooping the earth inside the pipes and pit and depositing and disposing the surplus earthto a designated/ approval place and levelling the site after completionof entire work as directed by Engineer in Charge. The rate is excludingthe cost of MS pipes size up to 5 mts X 5 mts - depth up to 5 mts

A11 - Installation of product pipe by manual jacking method - Manufactur-ing, providing, transporting, rolling, lowering, laying & jointing, testing,commissioning of ERW (Electric Resistance Welded), SAW (SubmergedArc Welded) MS pipe (Fe-410 grade) conforming to IS 3589-2001 with latest ammendments including perfect linking welding of joints to correctposition including cost and conveyance of pipes and materials with alllead ,lift, cost of labour, loading and unloading of pipes for the followingdiameters with specified thickness of plate as noted below includingbailing out of water wherever necessary for laying of carrier pipe ofsuitable dia including inside and outside of casing pipe painted with twocoats of Anti corrossive tankmastic paint. Installation of steel pipe byRamming / Jacking method to cross Railway track / NH /BDA /BBMP/Other roads/Existing utilities / NALA crossings, filling the gap betweencasing pipe and carrier pipe with quarry grit using compressor with allnecessary equipments, plants etc, complete. Suitable spacers of HDP/MS or other similar material should be provided in between carrier &casing pipe to prevent carrier pipe forming metallic contact with casingpipe. Note : a. The cost of jacking is inclusive of cost M.S. casing pipe ofspecified thickness b. The cost of carrying pipe is separate and provisionshall be made as per site requirement c. The cost of Jacking includes allleads lifts, cost of consumables, fuel charges, labour. d. The cost of jackingand receving pits shall be proposed seperatelly as per site requirement.Jacking of 900 mm dia & 16mm thick M.S. Casing Pipe

A12 - Providing S&S RCC SPUN / VIBRATED CAST PIPES (REINFORCED) pipes NP-3 Class conforming to IS:458-1988 with latest amentments using ordinary portland cement, for sanitary works and conveying to work site, rolling and lowering into trenches, laying true to line and level including loading and unloading at both destinations and jointing of pipes and specials, perfect linking of joints with jack to correct position including cost of jointing materials, i.e, rubber rings conforming to IS: 5382 for S&S RCC pipes, with all leads and lifts as directed and giving necessary hydraulic test as per ISS to the required pressure and commissioning etc. complete. (Contractor will make his own arrangements for procuring water for testing). Before the execution of the work, the contractor shall carry out the survey 400 mm dia RCC LINE)

A13 - Removal of unservisable soil with disposal up to a suitable distance as directed by the incharge of works.

A14 - 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

A15 - Providing PVC ringtite pipes conforming to IS 4985:2000 with latest amendments and conveying to worksite, rolling and lowering into trenches, laying true to line and level and perfect linking at joints, testing and commissioning, including loading unloading at both destinations and cuts of pipes wherever necessary including jointing of PVC pipes and specials (excluding cost of specials) with jointing of approved type, with all labour with all lead & lift including encasing the pipe alround to a depth of not less than 15 cms. with soft gravel or selected earth available from the excavation etc. complete and giving necessary hydraulic test to the required pressure as per ISS (Contractor will make his own arrangements for procuring water for testing) etc. For House Connection 110MM DIA PVC

A16 - Dismantling the damaged or collapsed Machinehole conical in shape, and reconstructing the same for the same dimensions, with machine made wire cut brick in CM 1:4 with ordinary portland cement etc. as per design and specifications. The existing ring, cover and CC beeding to be used. For 1.2M dia For Machinehole of 1.2M dia and 3.0 M depth

A17 - Supply and fixing of SFRC machinhole cover (Medium Duty) made as per IS to suit existing damaged machinhole cover after removing the debries from inside and outside the existing machinhole etc. with all lead and lifts. Heavy Dut

A18 - Providing and constructing "WIRE CUT BRICKMACHINEHOLE CHAMBERS" using Portland/Pozzolana cement, conical in shape at top, with CC 1:3:6 foundation using 40mm and down size graded metal of approved quality and with an offset of 0.15M alround the chamber.Construct Brick masonry in CM 1:4, 340 mm thick, with wirecut bricks of approved quality, plaster inside and out side with CM 1:3, 12mm thick,except for the conical surface outside where the plaster thickness shall be20mm. Slope inside to be 1:6 in the concrete towards central drain and finished smooth. Fixing of pipes in CC 1:2:4 with graded metal of 20mm and down size. Providing and fixing SFRC Machinehole frame and cover (Heavy Duty) conforming to IS:12592 with latest amendment, in CC 1:2:4. Providing and fixing footsteps made of 12mm dia. steel bars (Fe-500) with 3mm thick plastic encapsulation (IS-10910). The footsteps shall be fixed 30cms apart and on CC block embeded to masonry wall. The whole works include watering, curing, barricading, danger lighting, pouring tar over MH frame and cover, cost of tar, shoring, strutting, de-watering, engraving Machinehole number with flow direction on the inner conical surface etc. as per the drawing etc. as per technical specifications andfor the following diameters and depth etc. for 1.2mm dia: 1.20 m diametre manholes, 2.0m Depth

A19 - DO-1.20 m diametre manholes, 3.0m Depth

A20 - DO For every 0.1M Additional depth B/W 3.0M to 4.0M Depth

A21 - DO Constructing Brick Masonry Circular Machinehole 1.2 m internal dia.&4.0 M depth includ. SFRC F&C

A22 - DO-For Every 0.1 m additional Depth in b/w 4 to 5 meter depth

A23 - Connecting the existing lateral connections to the proposed / existingSewer Mains, including earth work excavation in all soils, lowering,laying, barricading, dewatering, jointing RCC-NP3 Class pipes refillingwith excavated / borrowed earth, carting of excavated earth upto aminimum distance of 25Km away from the site, complete as directed bythe Engineer. For sewer of 300mm dia to 400 mm dia of Pipe

A24 - Dewatering the sewage / storm water by using reqired HP submersible pump for the diversion of storm / sewage during the execution of work. Considering for one Pump. 5HP PUMP compete