work 13 construction of rcc cover for drain crossing - providing and laying in position specified grade of reinforced cement concrete,excludingthecostofcentering,shuttering,finishingand reinforcement - all work up to plinth level :1:1.5:3 (1 cement : 1.5 coarse sand (zone-iii) derived from natural sources : 3 graded stone aggregate 20 mm nominal size de rived from natural sources) 2 steel reinforcement for r.c.c. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level.mild steel and medium tensile steel bars . 3 centering and shuttering including strutting, propping etc. and removal of form forsuspended floors, roofs, landings, balconies and access platform 4 site material shifting