sera ( gogna ) water supply scheme sera ( gogna ) supply of all materials, labours & t&p etc and construct following works as per type design and drawings complete. 2 sm intake chamber 3 excavation of pipe line trench in following strata lift upto 1.5m lead upto 30m. including refilling, watering, ramming of excavated earth into the trenches and removal of surplus earth upto adistance of 60m from trenches including supply of labour, t&p etc complete. assuming that 90% pipe line is laid in trenches, it is estimated that 75% excavation will be in soil mixed with shingle, bajri & boulders and 15% will be in ordinary rock. 4 soil mixed with boulder 5 ordinary rock 6 providing, carting, laying & jointing of following sizes of pipes including all fittings, specials, bending, cutting & threading as required for proper completion of work.g.i. pipes as per is: 1239/ 1985 part-i 7 15mm dia 8 20mm dia 9 25mm dia 10 32mm dia 11 40mm dia 12 50mm dia 13 65mm dia 14 80mm dia 15 supply and fixing of valves in pipeline including cuting, threading of pipeline with fittings, materials, labours, t&p etc complete.gun metal gate/wheel valves confirming is:788 16 50mm dia 17 supply of all materials, labours, t&p. etc.and construct gate valve chamber as per type design complete. 18 providingand laying in position cement concrete of specification grade in 1:4:8( cement: sand :aggregate) 19 provision for protection works including all materials, t&p, labour complete as per the direction of engineer in chargerandam rubbel stone masonery in cement mortar 1:6 (1cement : 6 sand) 20 provision for protection works including all materials, t&p, labour complete as per the direction of engineer in charge randam rubbel stone masonery laid dry. 21 providingand laying in position cement concrete of specification grade in 1:2:4( cement: sand :aggregate)