Borewell & Tubewell Works Tenders

Construction of Tube-well upto 100 Meter depth and above in all type of rocks by DTH system and over burden, to accommodate casing pipe of following sizes in all types of soils and over burden including lowering of casing pipes, but excluding cost of casing pipes as per IS : 2800 (Part I & II) 1979 specifications. The work would be completed after obtaining sand free water. The tube well should have a throughout bore as per nominal dia of casing pipe:150mm

61 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. (DSR 23.12) 902793 160.000 Hour 0.00

Supply and shrounding the annular space between Tube Well bore and assembly with 2mm to 5mm thick Pea gravel. NSI-6.1.08

18.42 Boring with 100 mm diameter casing pipe for hand pump / tubewell, in all soils except ordinary hard rocks requiring blasting, including removing the casing pipe after the hand pump / tube well is lowered and tested : 18.42.1 Up to 6 metres depth

SECTION(A) PLUMBING WORKS (A)-(VI) TUBE WELL (a) Original Works 11 Supplying, fitting and fixing chech valve (vertical) G.M. tested to 21 kg per sq. cm. (vi) 50 mm