Bengaluru Water Supply And Sewerage Board Tender

code04 - 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 50m, and lift upto 1.50m, Including cost of all labour complete as per specifications .

code05 - 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 procuring water for testing ) Before the execution of the work, the contractor shall carry out the survey. RCC NP3 Class pipe of 300 mm dia

code06 - Providing and constructing "WIRE CUT BRICK MACHINEHOLE 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 be 20mm. 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 and for the following diameters and depth etc. for 1.2mm. For 1.20 Mtrs dia MH's, 1.80 Mtrs Depth

code07 - 1.90 Mtrs Depth

code08 - 2.00 Mtrs Depth

code09 - Construction of RCC Machinehole chambers of 1:1.5:3 proportion or approved type Cast-insitu / Pre-cast RCC Machinehole chambers, constructed using form vibrators of standard type, with barricading, danger lighting and using of sight rails and boning rods wherever necessary, shoring and strutting wherever required using Ordinary Port Land Cement, using 1:1.5:3 proportion RCC with 20 mm and down graded jelly, well graded sand and steel of approved quality, 200 mm thick top concrete slab, having wall thickness and raft thickness as in approved drawings and with an offset in raft alround the chamber as in approved drawing, benching concrete with 1:6 slope towards the central drain finished smooth, including fixing and grouting of pipes, including conveying to work spot supply and fixing SFRC Machinehole cover and frame (Heavy duty) conforming to IS:12592 with latest amendments, on a bed of CC 1:2:4 Providing and fixing of minimum 3 mm thick encapsulated plastic footsteps (as per IS 10910) on 12 mm dia. Grade Fe-500 steel bar (as per IS 1786) staggered at 300 mm apart as detailed in Technical specifications, including stone grit beding wherever required, watering, curing, engraving Machinehole number with flow direction on the inner cylindrical surface etc., complete including cost of reinforcement steel and fabrication charges and also cost and conveyance of all materials, labour with all lead and lifts. The Pre-cast RCC Machinehole are for various diamters and depths as stated below and as per detailed drawings, Specifications, and direction of the Engineer . For 1.20M dia Machine Hole. Constructing Pre-cast RCC Machinehole 1.2 m internal dia. , 2.00 Mtrs depth & SFRC cover & frame

code10 - Above 2.00 Mtrs Depth MH in terms of 0.10 Mtrs

code11 - Providing, laying, spreading and compacting graded stone aggregate to wet mix macadam specifications including premixing the Materials with water at OMC in Mechanical Mix Plant carriage of Mixed Materials by tipper to site, laying in Uniform layeras with Paver in Sub base / Base course on well prepared surface & compacting with Vibratory roller to achieve the desired density complete as per Specifications MORTH Specifications

code12 - Providing & Applying Primer Coat with SS1 Grade Bitumen Emulsionon prepared surface of granular base including cleaning of road surface & spraying primer at the rate of 0.70 Kg/Sq Mtr using Mechanical means.

code13 - Providing & Laying Bituminous Macadam with 100 TPH capacity hot mix plant batch type using crushed aggregates of specified grading premixed with bituminous binder VG-40 @ 3.3% by weight of Mix, transported to site , laid over a previously prepared surface with mechanical paver finisher to the required grade, level & alignment & rolled as per clauses 501.60 and 501.70 to achieve the desired compaction.

code14 - Tack Coat : Providing & aplying tack coat with RS1 Bituminous emulsion using emulsion pressure distributer at the rate of 0.25 Kg / Sq.Mtrs on Granular surface as per MORTH Specifications

code15 - Providing & laying Bituminous Concrete with 120 TPH Capacity hot mix plant batch type using crushed aggregates of specified grading , premixed with bituminous binder VG-30 @ 5.2 Percent of mix & filler, transporting the hot mix to work site, laying with mechanical paver finisher to the required grade level & alignmnet, rolling with smooth wheeled , vibratory & tandem rollers to achieve the desired compaction as per MORTH specifications clause No.507 complete in all respects