Borewell & Tubewell Works Tenders

Labour for boring of tube well of reqd. dia By water jet system through any type of soil strata including hire and labour charges for boring pipes, scaffolding, tools and plants as necessary and taking out them and lowering pipes, strainers, blind pipes etc. and fitting & fixing the same including bucket washing and other incidental works in this connection. The tube well should have a minimum 50 mm gap in between the outside of the tube well pipe and bore.

Labour for boring of tube well of reqd. dia By water jet system through any type of soil strata including hire and labour charges for boring pipes, scaffolding, tools and plants as necessary and taking out them and lowering pipes, strainers, blind pipes etc. and fitting & fixing the same including bucket washing and other incidental works in this connection. The tube well should have a minimum 50 mm gap in between the outside of the tube well pipe and 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.

Construction of tube well from ground level and upto 100 mtr. depth and above of following sizes in all types of soils in alluvium strata, unconsolidated formation such as pebbles, boulders etc. by "bailing method and without gravel packing as per IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended upto date) and technical specifications. The work includes formation of cavity at bottom by development with appropriate air compressor or bailer pumping and also lowering of casing pipe but excluding cost of the casing pipe. The tube well should have a throughout bore as per nominal dia of casing pipe. The work would be completed after obtaining sand free water Nominal bore 200 mm dia.

10000556 Labour for drilling a perfectly vertical bore hole of specified dia for a specified depth below ground level through consolidated and unconsolidated rock with down the hole hammer drilling rigs or combination drilling rigs (1200cfm/300psi) as required to suit the site condition as per the direction of Engineer-in-charge including use of own rigs with its accessories,tools and plant and consumables etc for lowering of 200mm dia PVC pipes for housing fitted with socket and with or without well screen as per tenecessity for soft,medium,hard and boulder formation (PVC casing pipes if required to prevent collapse of overburden is to be provided by the contractor including lowering and with drawing after completion of the tube well).(Icluding both LABOUR FOR DRILLING 200MM DIA UPTO 30 MTR. & LABOUR FOR DRILLING 150MM DIA FROM 30 MTR TO 150 MTR including all.) CONSIDER FOR 150 MTR DEPTH. Ground Floor

Development of Tube Well by OP unit of 3 cusec Hour capacity and testing of tube well for yield.