Construction of Rain Water harvesting Structure and Recharge shaft at Civil Lines ROB under Jurisdiction followed by Operation and maintenance for 3 years

Construction of tubewell up to 100m depth and above to accomodate housing and assembly pipe in all types of alluvium strata by rotay drilling method with "code of practice for construction and testing of tubewells (IS:2800 (Part-II) : 1991 and IS:2800 (Part-II) :1979 both amended up to date) with supply of bail plug if necessary.The work will not include cost of housing pipe and strainer pipe assembly cost, gravel and development work. Work would be deemed completed only after obtaining sound free water during pumping 250 mm nominal bore

Supply and lowering vent air pipe 63mm dia rigid PVC pipe(IS 4985) mark class II (4kg per cm2 ) with required all necessary fittings including perforation of 3 to 5 mm size all around the pipe at a distance of 180 to 220mm in zig zag fashion and making air vent at top complete as per direction of Engineer incharge.

Size 9 to 12 mm

Size 3 to 5 mm

Supply & laying of clean, clear sharp river sand of size 1 to 2mm coarse, without deduction of voids.

Construction of Recharge Shaft in filter pit including Earth work Excavation , lifting excavted earth with all lift and 50 m lead and centering & shuttering evenever required. Diameter 900 mm

Supply & fixing Pre-cast RCC Rinngs at the mouth of recharge shaft of M20 mix with 40 mm thickness Diameter 900 mm

Supply & lowering air line of 25mm dia, G.I. pipe 'B' class having perforation 3 to 5mm size all arrow of G.I. pipe in ZigZag fashion & making air vent at top including the cost of TeeNipples, Elbow, Socket etc.

Dismantling of Flexible Pavements Dismantling of flexible pavements and disposal of dismantled materials upto a lead of 100 m, stacking serviceable and unserviceable materials separately as per MoRTH Specification Clause 202 Bituminous Courses