Development and Energization of Bore well for water supply in the Power House Building of Rangit-IV HE Project

Boring/ drilling bore well of required dia for casing/ strainer pipe, by suitable method prescribed in IS: 2800( part 1), including collecting samples from different strata preparing and submitting strata chart/ bore log, including hire and running charges of all equipment tools plants and machineries required for the job, all complete as per direction of Engineer-in-charge upto 90 m depth below ground level. Rocky strata including boulders 300 mm dia

Gravel packing in tubewell construction in accordance with IS:4097, including providing gravel fine/medium/ coarse in required grading and sizes as per- actual requirement all complete as per direction of Engineer-incharge.

Supplying, assembling, lowering and fixing in vertical positon in bore well, UNPLASTICIZED pvc MEDIUM WELL SCREEN (rms) pipes with ribs, confirming to IS:12818 including hire and labour charges, fittings and accessories etc all complete for all depth as per direction of Engineer-in-charge. 150 nominal size dia

Development to tube well in accordance with IS: 2800(part 1) 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 required hire & labour charges of air compressor tools & accessories, etc. all, as per direction of Engineer-in-charge.

Providing and fixing suitable size threaded mild steel cap or spot welded plate to the top of bore well housing/ casing pipe removable as per requirement all complete for bore well of: 150mm dia

Providing and fixing M.S clamp of required dia to the top of casing/ housing pipe of tubewell as per 18:2800 (part 1), including necessary bolts & nuts of required size complete: 150 mm clamp

Providing, Fitting and fixing GI pipe (HEAVYDUTY), (excluding trenching, refilling, compacting and the cost of fittings) all complete 150 mm dia G I pipe

Supplying of Galvanised Iron Fitting Socket 6" dia.

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solventcement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. 50 mm nominal outer dia Pipes