Borewell & Tubewell Works Tenders

Construction of tube well 100 mtr. Depth and above in all types of soil in alluvium strata by bailing method and without gravel packing as per IS:2800 (part-I & II) 1979 specifications including lowering of casing pipes. (excluding cost of casing pipe) The tube well should have a throughout bore as per nominal bore of casing pipe. The work would be completed after obtaining sand free water. For 150 mm dia nominal bore.

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.

65 24.12 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 8.00 8.00 hours 916.80 7,334.00

Labour charges for the erection of 5HP supmersible pump set in the deep borewell including fixing and jointing supmersible cable with proper clamps upto the starter requirted with deapth and also fixing if raiser pipes to the required the depth valves erection.

Drilling of Bore hole (which may be carried out by pilot bore hole) to a finished dia of 200/225/300 /350/450 mm hole (for insertion of 110/140/160/180/200mm PVC Pipe / 175/200mm PVC Blue casing pipe) by Rotary drilling rig in all formations suitable for Rotary drilling such as alluvium, Loamy, clayey, sandy, burried channels, highly disturbed and bouldary zones high sheared and fractured zones followed by jointed to massive soft, medium rock, all formations typical and suitable for rotary drilling etc. including insertion of casing pipe , couplings, cap, plug fixation, and including filling the peripheral gap with rebullied pebbled gravel packing, bore development, conducting yield test, and all other required in the fixation of pipes assembly etc. but excluding the cost of casing pipe, couplings, dummys, clamps etc., as recommended by the departmental Geologist. The bore should be developed with compressor air until clear water free from sand and other materials continuously discharged. The size of gravel used for gravel packing should be as per ISI specification used for rotary tube well. The pebbled gravel packing should be carried out in such a way that the theoritical quantity consumed completely.The entire work to be carried out as per I.S. 2800 Part - I & II of 1979 and including cost of all materials and all labour charges and excluding all taxes etc.,Drilling of Bore well of 200/225/300 mm dia for insertion of pipe dia of 100/125 mm