Details: 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 150 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. testing verticality of tube well by plumbing system and yield test and draw down test by pumping system as per is : 2800 (part – ii) – 1979 or as per amended up to date. supply of erw m.s. black casing pipe isi marked (is: 4270/2001) or amended up to date of
Sector: Water supply and Sewerage