construction of 1000 mm dia culverts in place of damaged hume pai culvert and damaged hume pipe culvert in km - earthwork in excavation for structures as per drawing & technical specifications clause 305.1 including setting out, construction of shoring & bracing,removalof stumps & other deleterious matter , dressing of sides & bottom, backfilling the excavated earth to the required extent and utilising the remaining earth locally for roadwork. 2 stone dust filling in plinth for face wall, toe wall, central floor and also for u/s & d/s appron for c/o of rapta etc., i/c all cost of material, labour, t&p etc., as required for proper completion of work. 3 plain cement concrete mix 1:3:6 c:cs:crushed stone aggregate 40 mm nominal size , placed in foundation and compated by vibration including curing for 14 days. 4 providing & laying reinforced concrete pipe np3 for culverte on first class bedding of granular material in single row including fixing collar with cement mortar 1:2 (1 cement : 2 coarse sand).for 1000 mm dia np3 hume pipe 5 brick masonary work in ratio 1 : 4, with cement & sand i/c all cost of material, labour, t&p etc., as required for proper completion of work inface walls, pillers etc., 6 plaster work in ratio 1 : 4, with cement & sand moortari/c all cost of material, labour, t&p etc., as required for proper completion of work inface walls, pillers etc., 7 providing and laying cc in mix 1:2:4 with cement, coarse sand and 20 mm gauge stone ballast including supply of all material etc. complete work.(new item-a)