Borewell & Tubewell Works Tenders

leads & lifts, all complete as per direction of Engineer-in-charge. 23.6 Supplying, filling, spreading & leveling gravels of size range 5 mm cum 1 1538.25 1538.25 to 10 mm, in the recharge pit, over the existing layer of boulders, 70 in required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge. 23.7 Supplying, filling, spreading & leveling coarse sand of size range cum 1 1538.25 1538.25 1.5 mm to 2 mm in recharge pit, in required thickness over gravel 71 layer, for all leads & lifts, all complete as per direction of Engineer - in-charge. Supplying, assembling, lowering and fixing in vertical position in bore well, ERW (Electric Resistance Welded) FE 410 mild steel screwed and socketed/plain ended casing pipes of required dia, conforming to IS: 4270, of reputed & approved make, including 23.10 painted with outside surface with two coats of anticorrosive paint of approved brand and manufacture, including required hire & labour charges, fittings & accessories, all complete, for all depths, as per direction of Engineer-in-charge. 72 23.10.3 200 mm nominal size dia having minimum wall thickness 5.40 mm Metre 20 2442.75 48855 Supplying, assembling, lowering and fixing in vertical position in bore well, ERW (Electric Resistance Welded) FE 410 plain slotted (having slot of size 1.6/3.2 mm) mild steel threaded and socketed/ plain bevel ended pipe (type A) of required dia, conforming to IS: 8110, of reputed and approved make, having wall thickness not 23.11 less than 5.40 mm, including painted with outside surface with two coats of anticorrosive bitumastic paint of approved brand and manufacture, including hire & labour charges, fittings & accessories, all complete, for all depths, as per direction of Engineer -in-charge. 73 23.11.3 200 mm nominal size dia Metre 20 2571.05 51421 23.12 Development of tube well in accordance with IS : 2800 (part I) and Hour 5 1085.05 5425.25 IS: 11189, to establish maximum rate of usable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by V notch method or any 74 other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, including disinfection of tubewell, all complete, including hire & labour charges of air compressor, tools & accessories etc., all as per requirement and direction of Engineer-in-charge. Providing and fixing suitable size threaded mild steel cap or spot 23.13 welded plate to the top of bore well housing/ casing pipe, removable as per requirement, all complete for borewell of: 75 23.13.3 200 mm dia Each 5 321.15 1605.75 Providing and fixing M.S. clamp of required dia to the top of casing/ 23.14 housing pipe of tubewell as per IS: 2800 (part I), including necessary bolts & nuts of required size complete. 76 23.14.3 200 mm clamp Each 5 2293.65 11468.25 Providing and fixing Bail plug/ Bottom plug of required dia to the 23.15 bottom of pipe assembly of tubewell as per IS:2800 (part I). 77 23.15.3 200 mm dia Each 5 357.6 1788 Total 10800279.10