Bengaluru Water Supply And Sewerage Board Tender

code04 - Supplying lowering laying jointing testing and commissioning of following diameters glazed stone ware pipes conforming to IS 6511992 (with 5th revision) in all respects jointing with EPDM rubber rings (seals according to EN 681 and ASPM 425) The rubber seals joints pipe will have groves in interior of socket and exterior of the spigot. The rubber gasket shall be prefixed at the factory by the manufacturer rigidly with approved glue to have leak proof joint including conveying of pipe to work site and rolling and lowering into trenches laying true to line level and perfect linking at joints testing and commissoning including loading and unloading at both destinations and cuts of pipes wherever necessary including jointing of GSW pipes and specials with rubber gaskets conforming to EN 681 and ASTM C-425 including cleaning the socket and spigot with soap solution and applying talcum powder for detecting crack then applying glue and before inserting of rubber gaskets jacking and fixing in perfect condition including the cost of soap solution talcum powder and glue etc. and giving necessary hydraulic test to the required pressure of water head with all lead and lifts including costing of jointing materials and all necessary survey works for laying of sewers etc. and disposal of debris as directed etc. complete. (Contractor will make his own arrangements for procuring water for testing) with Rubber ring gasket joint. 230mm dia line.

code05 - Providing and constructing “WIRE CUT BRICK MACHINEHOLE CHAMBERS” using Portland/Pozzolana cement conical in shape at top with CC 136 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 14 340 mm thick with wirecut bricks of approved quality plaster inside and out side with CM 13 12mm thick except for the conical surface outside where the plaster thickness shall be 20mm. Slope inside to be 16 in the concrete towards central drain and finished smooth. Fixing of pipes in CC 124 with graded metal of 20mm and down size. Supplying and fixing SFRC Machinehole frame and cover (Heavy Duty) conforming to IS12592 with latest amendment in CC 124. Supplying 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 engravig Machine hole number with flow direction on the inner conical surface etc. as per the drawing etc. as per technical specifications and for the following diameters and depth etc. 1.5 M depth and SFRC cover and frame

code06 - 1.0 M depth and SFRC cover and frame

code07 - Additional depth of machineholes (1.0 M depth and 2.0m depth)

code08 - Refilling available earth around trenches or 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.

code09 - Providing laying spreading and compacting graded stones aggregates to wet mix macadum specification including premixing the materials with water at OMC in mechanical mix plant carryage of mixed method of Tipper to site laying in uniform layers with paver in sub base course onwell prepared surface and compacting with vibratary roller to achieve disered density complete as per specifications.