bids are invited for rotational moulded polyethylene water storage tanks (v3) conforming to is 12701 (q3) - earth work in excavation by manual means in trenches for foundations, drains, pipes, cables etc. (not exceeding 1.5 m in width) and for shafts, wells, cesspits and the like not exceeding 10 sqm on plan, including dressing of sides and ramming of bottoms lift upto 1.5 m, including getting out excavated earth and disposal of surplus excavated earth 1 meter from cutting edge. all kinds of soil. , providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering. all work upto plinth level with 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size). , random rubble masonry with hard stone in foundation and plinth including leveling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20mm nominal size) upto plinth level and curing complete with cement mortar 1:6 (1 cement : 6 coarse sand). , providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering. all work upto plinth level with 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size). , cement concrete flooring 1:2:4 (1cement: 2 coarse sand: 4 graded stone aggregate) finished with a floating coat of neat cement including cement slurry and curing complete, but excluding the cost of nosing of steps etc. complete 50 mm thick with 20mm nominal size stone aggregate. , structural steel work in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete. welded.