supply of material bricks, rcc grating , rcc manhole cover and frame. etc. at municipal store of ward no 76-s / sz.- 1 laying and jointing pvc pipe. heading 2 supply and stacking of fps bricks of class designation 75 n.s. at municipal store. 3 supply of precast rcc grating with frame 500 x 450 mm 4 supply of precast rcc manhole cover & frame, hd-20 560 mm dia 5 providing precast r.c.c. slab / grating 70mm thick manufactured with c.c 1:2:4 ( 1cement :2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) reinforcedwith 96 kg / m3 of r.c.c. i / c lapping all four side with m.s. sheet 1.6 mm thick &fixing in position complete. ( drain covers with or without holes )