Bengaluru Water Supply And Sewerage Board Tender

code04 - 1.50 to 3.00 Mtrs Depth

code05 - 3.0 to 4.50 Mtrs Depth

code06 - Earthwork excavation for pipeline trenches by Mechanical Means as per drawing & technical specifications, including setting out, construction of shoring, strutting, cost of blasting materials, barricading, caution lights, bracing, using sight rails & bonding rods at every 100mm wherever necessary as directed, removal of stumps & other deleterious matter, dressing of sides & levelling the bottom of trench to the extent required, utilizing the available excavated earth locally for the work & all other appurtenances to complete in the following strata. Hard Rock (blasting prohibited) Depth upto 1.50 Mtrs

code07 - Depth exceeding 1.50 Mtrs but not exceeding 3.00 Mtrs

code08 - Depth exceeding 3.00 Mtrs but not exceeding 4.50 Mtrs

code09 - 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. RCC NP3 class pipe of 300mm dia

code10 - 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 .

code11 - 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 1.20 Mtrs Internal dia1.00 Mtrs Depth including SFRC F & C

code12 - Above 1.00 Mtrs depth MH in terms of 0.10 Mtrs

code13 - 2.00 Mtrs Depth

code14 - Above 2.00 Mtrs Depth MH's in terms of 0.10 Mtrs

code15 - 3.00 Mtrs Depth

code16 - Above 3.00 Mtrs Depth MH in terms of 0.10 Mtrs

code17 - 1.50 Mtrs internal dia 4.00 Mtrs Depth

code18 - Above 4.00 Mtrs Depth MH in terms of 0.10 Mtrs

code19 - 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 1.20 Mtrs dia. 1.00 Mtrs Depth

code20 - 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 , Prestressed / RCC Grade M -20 & ABove

code21 - Providing & Laying in position reinforced cement concrete for all foundation works. The granite /trap/basalt crushed graded coarse aggregates & fine aggregates as per relevant IS Codes machine mixed with super plasticiers laid on finished layers, well cpmpacted using needle vibrators, including all lead & lifts , cost of materials , quality confimring to the requirements of relevant IS codes, labour, usage charges of machinery , cuirng & all other appurtenances required to complete the work as per technical specifications (The Cost of Steel reinforcement & form work to be paid separately) M20 design mix using 20mm nominal size graded crushed coarse aggregates

code22 - 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

code23 - Providing, filling & laying of Sand bags filled with sand / Clay for diversion of Sewage during execution of work

code24 - Disposal off the Excess excavated Earth of all types by vehicle including loading, Unloading with all lead & Lifts, Labour, HOM of Machinaries etc., upto 10 Kms