tender for extension of existing shed of nano catalyst lab civil; 1 earth work in excavation all kinds of soil by mechanical means ( hydraulic excavator ) / manual means 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. 2 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level. 3 1:2:4 ( 1 cement : 2 coarse sand ( zone-iii ) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources ) 4 1:3:6 ( 1 cement : 3 coarse sand ( zone-iii ) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources ) 5 providing and laying in position specified grade of reinforced cement concrete 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 ) , excluding the cost of centering, shuttering, finishing and reinforcement - all work up to plinth level. 6 reinforced cement concrete work in beams, suspended floors, roofs having slope up to 15° landings, balconies, shelves, chajjas, lintels, bands, plain window sills, staircases and spiral staircases above plinth level up to floor five level excluding the cost of centering, shuttering, finishing and reinforcement, with 1:1.5:3 ( 1 cement : 1.5 coarse sand incuding manufactured sand derived from recycled concrete aggregate ( rca ) upto 20%: 3 graded stone aggregate 20 mm nominal size recycled concrete aggregate ( rca ) upto 20% ) 7 centering and shuttering including strutting, propping etc. and removal of form for 8 lintels, beams, plinth beams, girders, bressumers and cantilevers 9 columns, pillars, piers, abutments, posts and struts 10 steel reinforcement thermo-mechanically treated bars of grade fe-500d or more for r.c.c. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. 11 brick work cement mortar 1:6 ( 1 cement : 6 coarse sand ) with common burnt clay f.p.s. ( non modular ) bricks of class designation 7.5 in superstructure above plinth level up to floor v level in all shapes and sizes in. 12 12 mm cement plaster of mix : 1:6 ( 1 cement: 6 fine sand ) .