tender for improvement of chg at building no. 157, duncan road, in beat no. 213 in e ward. - dismantling of pipes 75mm 2 dismantling of pipes 100 to 110 mm 3 p/f upvc/swr pipe 75 mm dia. 4 p/f upvc/swr pipe 110 mm dia. 5 excavation in concrete 6 p/l 250mm s.w. pipe 7 p/l encasement for pipe 250 mm 8 p/l stoneware pipes 100 mm dia 9 p/l 1:4:8 c.c. encasement 100 mm pipe 10 p/l 1:2:4 cc bedding 11 const. of b.m.inspection chamber etc. 12 extra on depth r2-cs-ps-194 13 gully trap chamber 14 p/l rough ladi 15 p/f g.i. pipe 15mm 16 p/f g.i. pipe 25mm 17 r/r g.i. pipes line 18 p/f g i door 19 bricks works for encasing the pipes, 20 removing cement plaster 21 p/athick external sand faced