tender for recharge well construction work for rain water drainage in bagseu - construction of t/w up to 100m 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 part1: 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. 200 mm dia (phed bsr 23-24 rs-1263/-) 2 supply of erw m.s. black casing pipe isi marked (is: 4270/1992) of grad fe 410 of following size at site of work (phed rate 2724.0//) 200 mm dia nominal bore 5.4 mm thickness 3 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. 200mm dia nominal bore of 5.4mm thickness 200 mm dia (phed bsr 23-24 rs-317/-) 4 contingency charges 1%