Maintenance and Cleaning of Rain Harvesting Pits for year 2025 in NHPC office Complex, Sector-33, Faridabad

Amount

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation upto plinth level Cement mortar 1:6 (1 cement : 6 coarse sand)

12 mm cement plaster of mix : 1:4 (1 cement: 4 fine sand)

Neat cement Punning

Centering and shuttering including strutting, propping etc. and removal of form for all height : Suspended floors, roofs, landings, balconies and access platform

Reinforced cement concrete work in beams, suspended floors, roofs having slope up to 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases and spiral stair cases above plinth level up to floor five level, excluding the cost of centering, shuttering, finishing and reinforcement with 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. hermo-Mechanically Treated bars of grade Fe-500D or more.

Providing and fixing in position pre-cast R.C.C. manhole cover and frame of required shape and approved quality L D- 2.5 Rectangular shape 600x450 mm internal dimensions

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

Manual lifting of filter media from rain water harvesting pit and screening / cleaning of stone boulder size range 5 cm to 20 cm and , refilling up to 500 mm depth, spreading & leveling stone boulders in recharge pit in the required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge including disposal of unservicable materials up to 50mts lead.(Quantity shall be measured as quantity of manual lifting volume).

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Supplying, filling, spreading & leveling gravels of size range 5 mm to 10 mm, in the recharge pit, over the existing layer of boulders, in required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge.

Supplying, filling, spreading & leveling coarse sand of size range 1.5 mm to 2 mm in recharge pit, in required thickness over gravel layer, for all leads & lifts, all complete as per direction of Engineer -in-charge.

M/s Ganpati Constructions (BID ID -3215865)