Augmentation of water supply system near IRFP plant no 02 under Ftr HQ BSF Tripura (SH Drilling of tube well)

Amount

Drilling and boring pilot hole in any soil strata by mini drilling rig, collection of soil samples of different strata met with during drilling at various suitable levels, preservation of samples in polythene bags / sample boxes and disposal of excess soil or mud, including the cost for bentonite, water etc. as required to maintain the pilot hole properly as per specification ( IS : 2800 (part-I)) and direction of the Engineer - in - charge.with contractor's mini rig.150 mm dia

Reaming of pilot hole to an enlarged bore hole in any soil strata by mini drilling rig, disposal of excess soil or mud, including the cost for bentonite, water etc. as required to maintain the bore hole properly as per specification ( IS : 2800 (part-I)) and direction of the Engineer - in - charge.with contractor's mini rig.from 150 mm dia pilot hole to 350 mm bore hole

Washing of enlarged bore hole of 350 - 550 mm dia in any soil strata by mini drilling rig, disposal of excess soil or mud, including the cost for bentonite, water etc. as required to maintain the bore hole properly, including lifting of drill pipesas per specification ( IS : 2800 (part-I)) and direction of the Engineer - in - charge.with contractor's mini rig

Providing & lowering of UPVC pipe as per IS:12818 after washing of the bore hole by mini drilling rig as per specification and direction of the Engineer - in - charge. UPVC 'CS' casing pipes.150 mm dia

Providing & lowering of UPVC pipe as per IS:12818 after washing of the bore hole by mini drilling rig as per specification and direction of the Engineer - in - charge. UPVC 'CS' casing pipes.150 mm dia.

Providing and fixing of UPVC end cap / well cap suitable for UPVC 'CM' casing or 'CS' casing or 'RS' pipes as per specification and direction of the Engineer - in - charge. 150 mm dia.

Providing and fixing of housing clamp ( made with 12 mm thick MS sheet ) along with well cap (made with 10 mm thick MS sheet ) with necessary arrangements for SBDTW as per specification and direction of the Engineer - in - charge.150 mm dia

Washing and development of tube well by using air compressor, and testing of the well as per specification ( IS : 11189 ) and direction of the Engineer - in - charge. with contractor's air compressor using air compressor of 300 - 450 cfm output for SBDTW

Providing and fixing C.I. non-return valve of approved quality as per CPWD specification and direction of the Engineer - in - charge.65 mm nominal bore

Excavating trenches of required width for pipes, cables etc. including exacavation for sockets, dressing of sides where required, ramming of bottoms, depth upto 1500 mm (slope-1 in 200)including getting out the excavated soil and backfilling of soil as required after laying of pipeline, in layers not exceeding 200 mm in depth including consolidating each deposited layer by ramming, watering etc. and disposing of surplus excavated soil with all required leads as per Chapter - 2 of CPWD specification and direction of the Engineer - in - charge.For UPVC pipes in new work.In all kinds of soil.For pipes not exceeding 90 mm dia

Providing, fixing and laying rigid UPVC pipes conforming to IS : 4985 jointing with couplers, of same class conforming to IS : 10124 ( Pt-II ) with solvent cement conforming to IS : 14182 including testing of joints complete ( but excluding the cost of specials like bend, tees etc. which will be paid separately ) as per CPWD specification and direction of the Engineer - in - charge. Class - 3 ( working pressure 6.0 kg / cm2).75 mm OD

Providing, fixing and laying fabricated UPVC bend of required degree conforming to IS : 10124 ( part 8 / 9 / 10 / 11 / 12 / 13 ) with solvent cement conforming to IS : 14182 including testing of joints complete as per CPWD specification and direction of the Engineer - in - charge.75 mm dia

Providing and shrouding of the deep tube well assembly with washed pea gravels ( 2.0 - 4.75 mm effective size ) as per specification ( IS : 4097) and direction of the Engineer - in -charge.with contractor's rig.with pea gravels obtained from Durgapur, West Bengal

Supplying, assembling, lowering and fixing in vertical position in bore well, GI 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. 65 mm nominal size dia

MOHAN LAL SINGHA