Construction of 2 Nos. Rain Water Harvesting System in the campus of PWD B and R Colony at Palwal in Palwal Distt. Under AR Estimate 2021-22

Amount

Civil Works

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m:Pipes, cables etc. exceeding 80 mm metre dia. but not exceeding 300 mm dia (HSR 4.16.1.2)

Cement Concrete 1:8:16 with stone aggregate 40 mm size in cum foundation and plinth. As per (HSR 10.100.2)

Providing and fixing on wall face Unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes.as per (HSR 9.57.3) a) 150 mm dia pipe

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 up to 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m.As per (HSR 4.14.1)

1 :4: 8 ( 1 Cement : 4 coarse sand (zone-Ill) : 8 graded cum stone aggregate 40 mm nominal size) as per (HSR 6.1.6)

Reinforced cement concrete work in beams, suspended floors, cum 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 four level, excluding the cost of centering, shuttering, finishing and reinforcement with 1: 1.5:3 (1 cement : 1.5 coarse sand(zone-111) : 3 graded stone aggregate 20 mm nominal size). As per (HSR 6.16)

Brick work with common burnt clay non-modular bricks of class designation 7.5 in foundation and plinth in: Cement mortar 1:4 (1 cement: 4 coarse sand) as per (HSR 7.21.1)

12 mm cement plaster of mix : 1 :4 (1 cement: 4 fine sand) as per (HSR 11.5.3)

Steel reinforcement for R.C.C. work, where not included in the complete rate of RCC, including straightening, cutting, bending,placing in position, binding, wastage, overlaps, welded joints,spacer bars, chairs, stays, hangers and annealed steel wire etc. complete in all respect below plinth level Note:- Reinforcement shall be measured in length including hooks, if any, separately for different diameters as actually used in work , excluding overlaps. Wastage, overlaps, couplings, welded joints, spacer bars, chairs, stays, hangers and annealed steel wire or other methods of binding & placing shall not be measured and cost of these items shall be deemed to be included in the rates for reinforcement as per (HSR 6.33.3)

Providing and fixing on wall face Unplasticised Rigid PVC rain water pipes conforming to IS : 13592 Type A, including jointing with seal ring conforming to IS : 5382, leaving 10 mm gap for thermal expansion, (i) Single socketed pipes. As per (HSR 9.57.3) 150mm Outer Dia

Providing, lowering, laying, cutting (cut surface to be uniformly finished), jointing with rubber rings marked with IS : 5382 and testing of SPIGOT AND SOCKETTED RCC, NP2 MARKED WITH IS : 458-1988 and specials into trenches for all depths including carriage, loading, unloading, stacking, handling, re-handling etc. complete is all respects to the atisfaction to the Engineer - in -charge. As per (HSR 20.62.1) 200mm Inner dia RCC NP3

Providing and fixing SFRC MANHOLE COVERS AND FRAMES MARKED WITH IS: 12592 including setting the same to correct lines and levels in 1 :3 cement sand mortar over manhole including carriage loading unloading stacking handling re-handling etc. complete in all respects to the satisfaction to the Engineer-in-charge as per (HSR 21.93.1)Type:- Extra Heavy Duty Set (EHD-35) 560MM Clear Opening

Providing & fixing steel bar embedded plastic steps of size 263mm x165mm of orange colour, confirming to specification in pump chambers, manholes etc., having minimum 3mm thick polypropylene polymer confirming to is:10910 encapsulated on 12mm dia ribbed steel bars per IS : 1786. The rate include cost of setting the same to correct lines and levels duly embedded in 1 :2:4 cement concrete including carriage, loading, uploading, stacking, handling, re-handling etc., complete in all respect to the satisfaction of Engineer-in-charge as per (HSR 21.28)

Providing and placing in horizontal layers filtering media screened, washed and cleaned as described below: (a) Top layer: - Fine sand screened, cleaned and washed and graded (effective size 0.2 to 0.4 mm with uniformity coefficient 2.0 to 3.0) from Ghaggar or other approved source as per (HSR 20.52.1)

(b) Second layer :- Coursed sand screened, cleaned and washed and graded from 3 mm to 6 mm (from Ghaggar or approved equivalent quarry) as per (HSR 20.52.2)

(c) Third layer: - Bajri screened washed and graded from 6 mm to 20 mm (from Ghaggar or approved equivalent quarry) as per (HSR 20.52.3)

(d) Fourth layer: - Bajri (coarsed) screened and washed graded from 20 mm to 25 mm (from Ghaggar or approved equivalent quarry) as per (HSR 20.52.4)

(e) Bottom layer:- Broken stone, screened, washed and graded from 50 mm to 75 mm (from Ghaggar or approved equivalent quarry) as per (HSR 20.52.5)

Boring for hand-pump in clay fitting strainer and pipe.Above 75mm dia bore but not exceeding 100mm as per (HSR 18.50.2.2)

Dakshineswari Mahakali Construction

M/s Neptune World

Yunish Khan Contractor

sahil

Dagar Construction

Maan Developers

Rajat Sehrawat

Gulab Singh

Asha Builders and Contractors