supply of materials like bricks, coarse sand, stone agg, rcc slab, m / h cover with frame etc at ward no. 120, ngz, dwarka-b; 1 laying and jointing pvc pipe. heading 2 supply and stacking of course sand 3 s / s of stone aggregate 20mm nominal size. 4 s / s of stone aggregate 10mm nominal size. 5 supply and stacking of precast rcc manhole cover of required shape and approved quality : hd-20 : circular shape 560mm internal diameter. 6 supply of gg 50x45x60cm including 500x450 mm precast rcc horizontal grating with frame complete as per standard design. 7 s / s of bricks of cd-75. 8 supply and stacking p / f precast rcc slab / grating 70mm thick manufactured with cc 1:2:4 ( 1 cement: 2 coarse sand: 4 graded stone aggregate 20mm nominal size ) reinforced with 96 kg / m3 of rcc i / c lapping all four side with m.s. sheet 1.6mm thick and fixing in position complete. ( drain covers with or without holes ) . 9 supply and stacking in position 100mmthick factory made machine batched & machine mixed precast rcc rectangular covers on drains of footpath of various sizes, of m-25 grade cement concrete for rcc work, including cost of centering, shuttering, reinforcement of 8mm dia tmt bars of fe 500 grade @ maximum 100mm c / c on both ways, neat cement punning on finished surface, properly encased on all edges with 1.6 mm thick, 100 mm wide ms sheet duly painted over priming coat, reinforcement to be welded at edges with ms sheet and providing 2 nos. 12 mm dia bar for hooks etc i / c cost of cartage, all leads & lift, handling at site etc. all complete as per direction of engineer-in-charge.