bids are invited for constr material constr mtrl 0 x store shelter specification as per appx b and list of items 1 ordinary portland cement 43 grade in hdpe bags of 50kg each. confirming to is 269-1976 make: birla gold / acc / ambuja ultratech 2 coarse sand: sand shall be clean, sharp, angular hard and durable free from adherent coating and shall not contain clay, mica and other impurities. the maximum quantities of clay and fine silt in sand shall not be more than 5% by mass as per is-383-1970. 3 20mm stone aggregates: stone aggregate shall be crushed stone 20mm graded conforming to is-383-1970 and shall be clean hard tough, durable and of uniform quality throughout. the aggregate shall be free from soft disintegrated materials, vegetable and other organic impurities. 4 40mm stone aggregates: stone aggregate shall be crushed stone 40mm graded conforming to is-383-1970 and shall be clean hard tough, durable and of uniform quality throughout. the aggregate shall be free from soft disintegrated materials, vegetable and other organic impurities. 5 hardcore 63 mm stone aggregates: stone aggregate shall be crushed stone not exceeding 63mm graded conforming to is-383- 1970 and shall be clean hard tough, durable and of uniform quality throughout. the aggregate shall be free from soft disintegrated materials, vegetable and other organic impurities. 6 pcc solid block 400x200x200mm ( + / -10mm ) minimum strength 50kg / sqcm. pcc shall conform to is-2185 ( part i ) 2005. solid block made out of pcc 1:3:6 having the compressive strength 5 kn / sqmm. 7 mild steel tmt bars 8mm dia for reinforcement isi marked make: tata / sail / jindal / jai balaji 8 mild steel tmt bars 10mm dia for reinforcement isi marked make: tata / sail / jindal / jai balaji 9 mild steel tmt bars 16mm dia for reinforcement isi marked make: tata / sail / jindal / jai balaji 10 pvc strips of size 38mm x 3mm 12 lime unslaked 11 integral water proofing compound ( wpc ) make: sika / seco / tata icc or equivalent 13 water proof plywood 8x4x12mm thick. make: century ply / kit ply / green ply / merino ply or equivalent brand. ) 14 wooden scantling 50mm x 50mm