hand pump installation , construction of tube-well up to 100 mtr depth and abouve in all type of rocks by dth system and over burden, to accommodate casing pipe of following sizes in all type of soils & over burden including lovering of casing pipes, but excluding coast of casing pipes as per is : 2800 ( part i & ii ) 1979 specifications. the work would be completed after obtaining sand free water. the tube well should have a throughout bore as per nominal dia of casing pipe. 125 mm dia ( item no. 2.45.2 phed bsr 2022 ) , supply of erw m.s, black casing pipe isi marked ( is: 1239 ( part-i:2024 ) ) medium of following sizes at site of work 125 mm dia nb ( thickness of pipe 4.8 mm & mass of tube 16.40 kg / m ) ( item no. 2.47.2 phed bsr 2022 ) , supplying and installation of isi marked india mark ii hand pump set complete with cylinder and 15 connection rods. ( item no. 2.51 phed bsr 2022 , supplying and installation of gi pipe 32 mm dia mediam class b with pipe sockets ( heavy duty ) ( item no. 2.50 phed bsr 2022 ) , construction of 185 cm. dial platform as per approved design and drawing of unicef