supply of op works stores , supply of op wks stores for constr mtrl at lgg circle : , cement 43 grade opc packed in hdpe bag each 50 kg wt conform to is 8112-1989 ( make : birla gold / ambuja / ultratech / acc / jk / dalmia ) . , stone for rr masonary less than 6 . , coarse aggregate 20mm graded . , coarse aggregate 40mm graded . , coarse sand free from vegetation . , wooden planks for shuttering iind class wood of size 3 . 0 x 0 . 30 x 0 . 026m . , hard core 63-90mm . , pvc pipe 75 mm dia each 3 mtr length ( make :prince / finolex / supreme / kpt ) . , mild steel bars of size 10mm and above dia conforming to is 432 ( part i ) 1982 ( make : tata / sail / jsw ) .