tender for development of borewell no. 6 at shanti nagar cbri colony. ; 1 development of tube well in accordance with is : 2800 (part i) and 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 other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, i/c 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. 2 gravel packing in tubewell construction in accordance with is: 4097, including providing gravel fine/ medium/ coarse, in required grading & sizes as per actual requirement, all complete as per direction of engineer-in-charge. 3 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 less than 5.40 mm, including painted with outside surface with two coats of anticorrosive bitumestic paint of approved brand and manufacture, including hire & labour charges, fittings & accessories, all complete, for all depths, as per direction of engineer -in-charge : 150 mm nominal size dia 4 supplying, assembling, lowering and fixing in vertical position in borewell, erw (electricresistancewelded)fe 410mild steel screwedandsocketed / plain endedcasingpipesof required dia(250mm dia &5.4mmthickness),conforming to is: 8110,ofreputed&approvedmakeandmanufacture,includingrequired hire & labourcharges,fittings&accessories,allcomplete, for all depths, as per direction of engineer-in-charge. 5 supplying and fixing in position in borewell, erw (electricresistancewelded)fe 410mild steel screwedendedcasingreducer of required dia(250mm dia x 150mm dia),conforming to is: 8110,ofreputed&approvedmakeandmanufacture,includingrequired hire & labourcharges,fittings&accessories,allcomplete, for all depths, as per direction of engineer-in-charge. 6 providing and fixing c.i. sluice valves (with cap) complete with bolts, nuts, rubber insertions etc. (the tail pieces if required will be paid separately) :100 mm diameter, class ii 7 supplying,and fixing in vertical position in borewell, isi mark 16 sqmm - 3 core submersible double insulation water proof cable ofreputed&approved make and manufacture,includingrequired hire & labourcharges,fittings&accessories,allcomplete, for all depths, as per direction of engineer-in-charge. 8 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 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 : 150 mm nominal size dia having minimum wall thickness 5.00 mm