Providing 07 Nos. Rain Water Harvesting Injection Bore well Structure in Village Sudhail

Amount

Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead up to 50 m and lift up to 1.5 m, as directed by Engineer-in-charge. All kinds of soil.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work below plinth level and up to Floor IV level. 1:3:6 (1 Cement : 3 coarse sand (zone-III) : 6 graded stone aggregate 20 mm nominal size).

Brick work with common burnt clay non-modular bricks of class designation 7.5 in foundation and plinth in: Cement mortar 1:6 (1 cement : 6 coarse sand)

10 mm cement plaster of mix 1:5 (1 cement: 5 fine sand

Drilling of 250mm dia of bore through bokky type instrument 0-50m BGL(PH035)

Supplying, assembling, lowering and fixing in vertical position in bore well Unplasticised 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. 200 mm nominal size dia

Providing & lowering of well casting UPVC pipe 400mm dia specification as per IS 12818-2010

M.S. socket 200 mm dia ( B2027)

Jali, Rivet, Brass , Disco, solvent and cap

Supply, testing and lowering of ISi marked all welded stainless steel screen (SS304) cage Type V-Wire Wound Screens in bore wells conforming to IS:8110 & compositions of material as per IS:1012, outer dia 221 mm equivalent thickness required as per code, tensile load 14000 kg minimum and ring thickness as per IS code of following sizes: Stainless Steel Screens 200x8.0x0.50mm

Development of bore well by machine including labour & generator

Providing and placing in horizontal layers filtering media screened washed and cleaned as described below - (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) approved source

layer of charcoal

Providing and placing in horizontal layers filtering media screened washed and cleaned as described below - Bajri (coursed) screened and washed graded from 20 mm to 25 mm (from approved equivalent quarry)

Providing and placing in horizontal layers filtering media screened washed and cleaned as described below - Broken stone, screened, washed and graded from 50 mm to 75 mm (from approved equivalent quarry) (Bottom layer)

Providing & fixing six sides Tee 200 mm dia

Providing & fixing PVC 400mm x 200 mm Dia

Providing & fixing End cap 400mm