supply of different materials for construction of zeol fist tank for eco friendly hydrophonic irrigation at mgp within dinhata-i ps , 1st class brick , portland cement , stone aggregate ( single size ) : 20 mm nominal size , stone aggregate ( single size ) : 10 mm nominal size , stone aggregate below 40mm nominal size , coarse sand , hire charges of shuttering plank ( 25mm-30mm thick ) without prop including all fiting , g i wire , tor steeel roads , 1st class bricks ( kiln burnt ) , medium sand , m . s . structure with hollow sectins ( square or rectangula shape conforming to is 806-1986 soan yopti 12 mtr , galvanised steel corrugated sheets , glavanised steel steel bolts and nuts 6 mm dia and 25 mm long round head with slots , galvanised steel j or l hooks 8 mm dia , materials display board