construction of tubewell at kala bhata panchoo - construction of tube well from ground level & up to 100 mtr depth to accommodate housing and assembly pipe of following sizes in all type of alluvium strataunconsolidated formation such as pebbles, boulders etc. by percussion/rotary drilling method as per is:2800 part 1: 1991 andis:2800 part ii: 1979 (both amended upto date) and technical specifications, with gravel as per is:4097-1967 and its packing as per is: 2800 (part i & ii) 1979 as amended up to date (the work includes the cost of gravel & its primary packing and packing during development, lowering of housing & strainer assembly pipes with supply and wrapping of coir-rope, wherever necessary for arresting fine sand particles and development work, but excluding the cost of housing and strainer pipe assembly). the work would be completed after obtaining sand free water.250 mm dia phed bsr rate1782 per meter 2 add 15% extra on above item (item no 2.3.1 to 2.3.2) 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. phed bsr rate 267.30 per meter 3 construction of tube well after completion of drilling by rotary /percussion method & upto 100 mtr. depthin all type of rocks by dth systemas per is:2800 part 1: 1991 andis:2800 part ii: 1979 (both amended upto date) and technical specifications. the workshall be deemed completed only after obtaining sand free water. the bore well should have a throughout nominal size bore beyond casing pipe.nominal bore 200 mm dia.phed bsr rate 1263 per meter 4 add 15% extra on above item(item no 2.3.1 to 2.3.2) for drilling depth beyond 200 mtr and from ground level, rate shall be applicable for only extra depth beyond 200 mtr . 5 supply of erw m.s. black casing pipe isi marked (is: 4270/2001) or amended up to dateoffollowing sizes 200 mm dia nb (thickness of pipe 5.4mm & mass of tube 28.46 kg/m) phed bsr rate 2734 per meter 6 supply of erw m.s. black casing pipe isi marked (is: 4270/2001) or amended up to dateoffollowing sizes 250 mm dia nb (thickness of pipe 7.1 mm & mass of tube 46.57 kg/m) phed bsr rate 4473 per meter 7 contigencies