upgratation of road with concrete from doltola to swaraswati tola , box cutting or filling in road embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the sub-grade with power roller to proper camber and grade as per direction and satisfaction of engineer-in-charge including uprooting and removing plants and jungles when and where necessary . ( a ) depth up to 150 mm . , supplying , spreading and compacting sand to required thickness , in layers not exceeding 150 mm to proper gradient and camber , inundating each layer by water and packing and ramming layer by layer to achieve desired compaction , including lighting , guarding , barricading and making adequate earthen bundh where necessary , curing with water as per direction , mending cracks and depressions by ramming wherever necessary . , supplying and laying polythene sheet ( 150gm / sq . m . ) over damp proof course orbelow flooring or roof terracing or infoundation or in foundation trenches . , plain / reinforced cement concrete in open foundation with or without reinforcements , in any part of foundation of bridges / culverts with graded stone chips of appropriate nominal sizes , including screening and cleaning of coarse aggregates , fine aggregate ( sand ) conforming to proper grading zone , both of approved quality and cement , as necessary , cost of curing with water , including cost and carriage of all materials and including preparation of design mix , approval of the same by the engineer-in-charge , cost for quality control , sampling , testing etc . including cost of formwork but excluding reinforcement complete as per drawing and technical specifications a pcc grade m20 , i ) using concrete mixer