Providing and installing one No. Tubewell of 250mm uPVC pipes in BSNL CGMT Office compound at Ambala Cantt Haryana

Amount

Boring/drilling bore well of required dia for casing/ strainer pipe, by suitable method prescribed in IS: 2800 (part I), 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, upto 250 metre depth below ground level.

All types of soil

Drilling of 610mm dia and upto 250 metre below ground level

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

250 mm nominal size dia

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

250 mm nominal size dia

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

Providing and fixing Bail plug/ Bottom plug/end cap of required dia for 250mm PVC pipe to the top/bottom of pipe assembly of tubewell as per the direction of Engineer-in-charge.

Supplying and fixing in position 273.10 mm M.S clamps as per IS 226-1975 as amended up to date for serving the housing pipe supported on two girders not less than ISMB 100 mm x150 mm flange thickness 7.00 mm and web thickness 5.40 mm and 1.50 metre long each embedded in suitable foundation as approved by the Engineer-in-charge.

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.

Testing of water sample for drinking purpose from approved laboratory.

Supplying ,wrapping and binding mono filament cloth alround the strainer PVC pipe etc complete as per direction of Engineer-in-charge.(Length of pipe shall be measured for payment)

Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. : External work

80 mm dia. nominal bore

Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) :

80 mm nominal bore

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 centralized guides(Certralizer) fitted to the well assembly except the housing pipes at bottom and at a spacing of 12.0 metre centre to centre to keep the assembly in centre of the bore as per approved design and specifications confirming to IS 226-1975.

Deep Electrical and Mechanical Works