03/2025-26 Construction of water recharge tube well for rain water drainage in Girls School, Rasisar Bada Bas

Construction of Tube Well up to 100 mtr. depth in all type of rocks by DTH system & over burden to accommodate casing pipe of following sizes in all types of soils & over burden including lowering of casing pipes, (if required) excluding cost of casing pipes, as per IS:2800 Part 1: 1991 and IS:2800 Part II: 1979 (both amended upto date) and technical specifications. The work would be completed after obtaining sand free water. The tube well should have a through out bore as per nominal dia of casing pipe. Nominal bore 200 /250 mm dia.

Add 15% extra on above item (Item No 2.4.1 to 2.4.2) for drilling depth beyond 100 mtr and up to 200 mtr from ground level, rate shall be applicable for only extra depth beyond 100 mtr and up to 200 mtr.

Add 30% extra on above item (Item No 2.4.1 to 2.4.2) for drilling depth beyond 200 mtr and from ground level, rate shall be applicable for only extra depth beyond 200 mtr .

Supply of ERW M.S. black casing pipe ISI marked (IS: 4270/2001) or amended up to date of following sizes 250 mm dia NB (Thickness of pipe 7.1 mm & mass of tube 46.57 Kg/m)

Labour charges for making slots on blank pipes made of ERW MS black pipe ISI marked of following sizes, the slotting should be as per IS:8110-1985. 250 mm dia nominal bore of 7.1mm thickness

Earth work in foundation excavation up to 1.5m, ramming bottom, dressing sides, back filling and disposal of surplus soil with in a lead of 50m.

Cement concrete in foundation and plinth with stone ballast size 40mm including curing and compaction etc in 1 4 8 mix

Brick work in foundation and plinth using bricks of class designation-75 in CM 1:6

20mm thick plaster on new work including curing and racking of joints in CM 1:6

S/L 40mm stone gitti

S/L 20mm stone gitti

contigency and others