||Item Description/ Heading
||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 90 metre depth below ground level.\n All types of soil\n 250 mm dia
||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 90 metre depth below ground level.\n Rocky strata including Boulders\n 250 mm dia
||Gravel packing in tubewell construction in accordance with IS: 4097,including providing gravel fine/ medium/ coarse, in required grading & sizes as per actual requirement, all complete as per direction of\nEngineer-in-charge.
||Supplying, assembling, lowering and fixing in vertical position in bore well, ERW (Electric Resistance Welded) FE 410 mild steel screwed and socketed/ plain ended casing pipes of required dia, conforming to IS: 4270, of reputed & approved make, including painted with outside surface with two coats of anticorrosive paint of approved brand and manufacture, including required hire & labour charges,fittings & accessories, all complete, for all depths, as per direction of Engineer-in-charge.\n150 mm nominal size dia having minimum wall thickness\n5.00 mm
||Supplying, assembling, lowering and fixing in vertical position in bore well, ERW (Electric Resistance Welded) FE 410 plain slotted (having slot of size 1.6/3.2 mm) mild steel threaded and socketed /plain bevel ended pipe (type A) of required dia, conforming to IS:8110, of reputed and approved make, having wall thickness not less than 5.40 mm, including painted with outside surface with two coats of anticorrosive bitumestic paint of approved brand and manufacture, including hire & labour charges, fittings & accessories, all complete, for all depths, as per direction of Engineer -in-charge.\n150 mm nominal size dia
||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 & ccessories\netc., 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:\n150 mm dia
||Providing and fixing Bail plug/ Bottom plug of required dia to the bottom of pipe assembly of tubewell as per IS:2800 (part I).\n150 mm dia
||Supplying and fixing of central guide at 12 m interval as per instruction of the Engr-In-Charge.
||Providing clay sealing to prevent entry of the surface and sewage water at top.
||Providing cement sealing to prevent entry of ground water from top aquifer into Piezometer complete as per the instruction of Engr-In-Charge.
||Providing bentonite sealing to prevent entry of the ground water from top aquifer into Piezometer as per the instructions of the Engr-In-Charge.
||Providing coarse grain sand fill to prevent entry of the cement slurry from cement sealing into gravel pack as per the instruction of Engr-In-Charge.
||Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan) including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.\nAll kinds of soil.
||Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level :\n1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size)
||Centering and shuttering including strutting, propping etc. and removal of form for : Foundations, footings, bases of columns, etc. for mass concrete
||TOTAL IMPACT OF GST FOR THE PURPOSE OF CTC