Bengaluru Water Supply And Sewerage Board Tender

No4 - Earth work excavation for pipeline trenches by mechanical means as per drawing and technical specifications, including setting out, construction of shoring, strutting, barricading, caution lights, bracing, using sight rails & bonding rods at every 100 mm wherever necessary as directed, removal of stumps and other deleterious matter, dressing of sides and levelling the bottom of trench to the extent required , utilising the available excavated earth locally for the work and all other appurtenances to complete in the following strata. Considering 10% of EW qty upto 1.5mt Depth

No5 - Hard rock (blasting prohibited) Depth upto 1.50 to 3.0m.Considering 10% of EW qty upto 1.5mt Depth

No6 - 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. for 300mm Dia.

No7 - Refilling available earth around trenches/pipelines, cables in layers not exceeding 20 cm 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

No8 - Providing PVC-U INDIVIDUAL U.G.D House service connection (which shall be laid from inside the customer property ) which includes: a) Supply of PVC-U pipe (b) providing and fixing of 315 mm dia the PE Inspection chambres with lid consisting of inlet & outlet arrangements with base, riser of min. 0.42 m depth which includes earth work, fixing in CC-1:2:4 with appurtenances., complete. (c) civil works like Earthwork excavation for the pipeline trenches for laying of PVC-U pipes for the house connections in all types of soils , disintegrated rock,soft rock, hard rock, including cutting of any road using , crossing drains, compound, Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, c.c. wood work, steel work, including T & P and scaffolding wherever necessary sorting the dismantled material, disposal of unserviceable and stacking the serviceable material with all lifts and lead , restoring the damaged portions inside or outside the property premises, refilling the portions of trenches that are dug open including linking to existing sewer network with appurtenances. complete 110mm Dia

No9 - 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. 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 dia Circ. B M.H: a)1.0m depth

No10 - For every 0.1mtr upto(1m to 2m depth)

No11 - Constructing Brick Masonry Circular Machinehole 1.2 m internal dia., 2.0 M depth & SFRC cover & frame

No12 - For every 0.1mtr upto(2m to 3m depth)

No13 - 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:1.00mtr depth

No14 - For every 0.1mtr upto(1m to 2m depth)

No15 - Providing, laying, spreading and compacting graded stones aggregate to wet mix macadam specifications including pre mixing the material with water at OMC in mechanical mix plant carriage of mixed method of tipper to site, laying in uniform layers with paver in sub-base/base course on well prepared surface and compacting with vibratory roller to achieve the desired density complete as per specifications MORTH specification No.406

No16 - Providing and applying primer coat with SS1 grade Bituminous Emulsion on prepared surface of granular Base including cleaning with mechanical Broom of road surface and spraying primer at the rate of 0.90 kg/m2 using mechanical means

No17 - Providing and applying tack coat with VG-10 Bitumen using pressure distributor at the rate of 0.20 kg/m2 on the prepared bituminous surface cleaned with mechanical broom Tack coat on Bituminous surface

No18 - Providing and laying Bituminous Macadam with 120 TPH capacity hot mix plant batch type using crushed aggregates of specified grading premixed with bituminous binder VG-30 @ 3.4% by weight of mix, transported to site, laid over a previously prepared surface with mechanical paver finisher to the required grade, level and alignment and rolled as per clauses 501.6 and 501.7 to achieve the desired compaction.

No19 - 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-30 @ 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 respects.

No20 - Removal of Unserviceable Soil with Disposal upto a suitable distance as directed by the Engineer incharge of work.