provision and construction transformer covering shed of 33kv & 03 nos residential area ess sub station at aiims nagpur.; 1 civil & electrical works 2 earth work in excavation by mechanical means ( hydraulic excavator ) / manual means in all kinds of soil in foundation trenches or drains ( not exceeding 1.5 m in width or 10 sqm on plan ) , including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. 3 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:4:8 ( 1 cement : 4 coarse sand ( zone-iii ) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources 4 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:1½:3 ( 1 cement: 1½ coarse sand ( zone-iii ) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources ) 5 centering and shuttering including strutting, propping etc. and removal of form work for ( foundations, footings, bases for columns 6 steel reinforcement for r.c.c. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level.thermo-mechanically treated bars of grade fe-500d or more 7 steel work in built up tubular ( round, square or rectangular hollow tubes etc. ) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. hot finished welded type tubes 8 providing and fixing mild steel round holding down bolts with nuts and washer plates complete 9 structural steel work riveted, bolted or welded 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. 10 painting with synthetic enamel paint of approved brand and manufacture to give an even shade : two or more coats on new work 11 providing corrugated g.s. sheet roofing including vertical / curved surface fixed with polymer coated j or l hooks, bolts and nuts 8 mm diameter with bitumen and g.i. limpet washers or with g.i. limpet washers filled with white lead, including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete ( up to any pitch in horizontal / vertical or curved surfaces ) , excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.12.1.3 0.63 mm thick with zinc coating not less than 275 gm / m²