replacement of pipeline at lamba pahad village under wimberly gunj sub division, rcd, apwd, wimberly gunj- 1 dismantling and demolishing 2 dismantling g.i. pipes (external work) including excavation and refilling trenches after taking out the pipes, manually/ by mechanical means including stacking of pipes within 50 metres lead as per direction of engineer-in-charge : 3 above 40 mm nominal bore 4 water supply 5 providing and fixing 3 layer pp-r (poly propylene random copolymer) pipes confirming to is:15801 uv stabilized & anti - microbial fusion welded, having thermal stability for hot & cold water supply, including all pp - r plain & brass threaded polypropylene random fittings, including trenching, refilling & testing of joints complete as per direction of engineer-in-charge. external work 6 pn - 10 pipe, 63 mm od (sdr-11) 7 pn - 10 pipe, 75 mm od (sdr-11) 8 pn - 10 pipe, 110 mm od (sdr-11) 9 providing and fixing flange joints with double ppr flange including flange core gasket with bolts and nuts etc complete as per the direction of eic. 10 ppr double flange 63 mm 11 ppr double flange 75 mm 12 ppr double flange 110 mm