Provision of 300 X 150 MM dia Deep Tube Well BSNL quarter complex at CTO Compound back side of Ty IV Qtrs Pan Bazar Guwahati

Amount

Boring/drilling bore well of required dia for casing/ strainer pipe, by suitable method including collecting samples from different strata, preparing and submitting strata chart/ bore log, including hiring & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer –in-charge, upto 90 metre depth below ground level.

All types of soil (i) 300 mm dia.

Boring/drilling bore well of required dia for casing/ strainer pipe, by suitable method, including collecting samples from different strata, preparing and submitting strata chart/bore log, including hire & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer –in-charge, beyond 90 metre & upto 150 metre depth below ground level.

All types of soil (i) 300 mm dia.

Supplying, assembling, lowering and fixing in vertical position in bore well, unplasticized PVC medium well casing (CM) pipe of required dia,confirming to IS:12818 including required hire and labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer –in-charge.

150 mm nominal size dia.

Supplying, assembling, lowering and fixing in vertical position in bore well unplasticized PVC medium well screen (RMS) pipes with ribs, confirming to IS:12818 including hire & labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer-in-charge.

150 mm nominal size dia.

Gravel packing in tubewell construction , including providing gravel fine/ medium/ coarse, in required grading & sizes( P gravel) as per actual requirement, all complete as per direction of Engineer-in-charge.

Development of tube well, 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.

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 borewell of:

(a) 150 mm dia

Providing and fixing M.S. clamp of required dia to the top of casing/ housing pipe of tubewell including necessary bolts & nuts of required size complete.

(a) 150 mm clamp.

Providing and fixing Bail plug/ Bottom plug of required dia to the bottom of pipe assembly of tubewell i). Of 150 mm dia

Supplying and fixing 50 mm dia G.I. pipe complete with G.I. fittings. (TATA medium or equidalent)

Supplying and fixing 40 mm dia MS clamp with nut and bolts for holding column pipe.

Providing and fixing gun metal non- return valve of approved quality (screwed end) : 50 mm nominal bore of Shaktior eqv

Vertical

Making connection of G.I. distribution branch with G.I. main of following sizes by providing and fixing tee, including cutting and threading the pipe etc. complete :

50 to 80 mm nominal bore

Providing and fixing G.I. Union in G.I. pipe including cutting and threading the pipe and making long screws etc. complete (New work)

50 mm nominal bore

Physical, Chemical & bacteriological testing of water including carrying water sample to the laboratory and submission of test report. The test to be got done from a govt laboratory or reputed testing lab as approved by the Engineer-in-charge.

Diganta Patowary

Siddhartha Hazarika