Bengaluru Water Supply And Sewerage Board Tender

code04 - Depth exceeding 3.0 m but not exceeding 4.5 m

code05 - Supplying S and S RCC SPUN or VIBRATED CAST PIPES REINFORCED pipes NP3 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 and 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.

code06 - Providing Bedding or Backfilling using approved stone dust or 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.

code07 - Providing and constructing WIRE CUT BRICK MACHINEHOLE CHAMBERS using Portland or 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 be 20mm. Slope inside to be 1 is to 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. Supplying and fixing SFRC Machinehole frame and cover Heavy Duty conforming to IS 12592 with latest amendment in CC 1 2 4. 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 engraving Machinehole 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. for 1.2mm diaCirc. B M.H: 1.8m dia CSR 23 24 Vol V Sl.No: 16.20.4 Pg. No. 195 Constructing Pre cast RCC Machinehole 1.8 m internal dia. 4.0 M depth andSFRC cover andfram 4.00 mt depth

code08 - for every 0.10mtr additional

code09 - Removal of unserviceable soil with disposal upto a suitable distance as directed by the engineer incharge of work

code10 - Dewatering the sewage or storm water by using reqired 5 HP submersible pump for the diversion of storm or sewage during the execution of work. Considering for one Pump Commom SR Vol 5 2021 22 P No: 201 I No 55.1 5hp

code11 - 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 paverorgrader in sub base or base course on well prepared surface and compacting with vibratory roller to achieve the desired density. PWD SR Vol 3 Page no.24.

code12 - Providing and laying in position Cement Concrete for levelling course for all works in foundation. The graniteortraporbasalt crushed graded coarse aggregates and fine aggregates as per relevant IS Codes machine mixed laid in layers not exceeding 150 mm thickness well compacted using plate vibrators including all lead andlifts cost of all materials of quality labour Usage charges of machinery curing and all the other appurtenances required to complete the work as per technical specifications Using 20 mm nominal size graded crushed coarse aggregates