bids are invited for supply of construction material for six store shelter ordinary portland cement opc in kg bag conforming to is 1489 , fine sand conforming to is 383 1970 , crushed stone aggregate 20mm grade conforming to is 383 1970 , crushed stone aggregate 40mm grade conforming to is 383 1970 , hardcore 63mm confirming to is 383 1970 , common building brick sub class b of size 23cm x 11 cm conforming to is 1077 1986 average compressive strength not less than 75kg cm2 , bitumen of grade vg 30 , glass strips 30m wide and 5mm thick , water proofing compound , 75mm dia swr pipe 6kg cm3 , cement base paint , machine pressed precast conrete interlocking paver block an shape and size confirming to is 15658 2006 of 80mm thickness and m 50 grade with colour pigment total quantity : 68333