PROVISION OF RAIN WATER HARVESTING SYSTEM FOR NARAINA NAVSENA BAGH IN THE AREA OF AGE EM I UNDER GE U WATER SUPPLY DELHI CANTT 10

Amount

Excavation in trenches not exceeding 1.5 meters wide and not exc. 1.5 meters deep for laying PVC pipe line any type of soil, getting out and leveling of bottom surface to required level complete all as specified and as directed.

Excavation in trenches exceeding 1.5 meters and not exc. 3 meters depth soft loose soil complete all as specified and as directed

Excavation in trenches not exc 1.5 metres wide and not exc3.0 metres deep for pipe line in hard rock, getting out and levelling of bottom surface to required level complete all as specified and as directed

Retuning filling in including spreading,levelling,watering and well ramming in layers not exc. 25Cms complete all as specified and as directed .

Removal of excavated material from site to a distance not exceeding 50 meters away and depositing where directed at a level not exceeding 1.5 meters above the starting point complete all as specified and as directed .

Material and labour for brick aggregate of size 40 mm to 63 mm. The first layer in rain harvesting pit is to be provided with brick aggregate and to be provided in the layer upto 500 mm complete all as specified and as directed.

Material and labour for charcoal to be provided for second layer of rain water harvesting pit and is to be provided upto the layer of 100 mm.

M&L for filling sand in the third layer of rain water harvesting pit. The sand particals should be of size 1.5 to 2.0 mm and to be provided in the layer upto 200 mm thick.

M& L for providing non woven geotextile membrane of 120 GSM on the top layer of rain water harvesting pit. The size of the membrane should be of the size of rain water harvesting pit so that it can cover the entire pit and all the water should pass through this membrain.

Material and labour for PCC (1:4:8) type D-2 (using 40 mm graded stone) aggregate as in foundation, flooring sub base complete all as specified and as directed.

M&L for pre cast RCC covers 1:2:4 type B-1 as in detachable slab of size 1.8x.9x0.15 inclusive of, form work and setting in cement mortar 1:4, two numbers per pit including handle for open and close complete all as specified and as direcetd.

Material and labour for Brick work with sub class 'B' bricks straight or curved on planexc. 6M mean radius built in CM (1:4) complete all as specified and as direcetd.

Rendering 10 mm thick with cement mortar (1:6) on fair faces of brick walls for finishing the surface even and fair complete all as specified and as directed

Supply and laying PVC (SWR) pipe 110 mm bore single socketed in any length with rubber ring joints laid in trenches or in floor complete all as specified and as directed.

Supply and laying PVC (SWR) pipe 160 mm bore single socketed in any length with rubber ring joints laid in trenches or in floor complete all as specified and as directed

M&L for PVC bends of 110 mm bore complete all as specified and as directed

M&L for PVC bends of 160 mm bore complete all as specified and as directed

M&L for PVC junction single single 'T' equal or unequal of 110 mm bore complete all as specified and as directed

M&L for PVC reducer 160 X 110mm bore complete all as specified and as directed

M&L for sign board made out of 2mm thick sheet steel of size 120x90Cms painted both side with two coats of synthetic enamelled paint of approved colour over a coat of red oxide primer and writing both side "rain water harvesting pit No ,GE (U) water supply" with white paint over approved painted back ground and embedded in and including PCC at 2 mtr height above ground level complete with angle iron legs-02 Nos of size 50x50mm complete all as specified and as directed.

Labour for pre cleaning of roof any type/size including removing waste material from top and depositing where directed at a distance not exc 250mtr from starting point complete all as specified and as directed.

Deven Associates