tender for construction of compost pit for community at jahannagar kumarananda high school under jahannagar gp. code no. 3202031003/rs/vb/321002040869509 , fine sand , portland cement , stone aggregate(single size):20 mm nominal size , stone aggregate(single size): 10 mm nominal size , carriage of stone aggregate below 40 mm nominal size , loading unloading & stacking sand/ stone aggregate (less than 40mm nominal size) , coarse sand , 1st class traditional bricks (kiln burnt) , medium sand , m.s. structural with hollow sections (square or rectangular shape) conforming to is: 806-1968 & is:1161-1998) span up to 12 mtr , galvanised steel corrugated sheets , galvanised steel bolts & nuts 6 mm dia and 25 mm long round head with slots , galvanised steel j or l hooks 8 mm dia