supply of different materials for construction of 26 nos . fish culture pucca tank at different place under putimari i gp within dinhata i ps samsad no . 6 , 7 , 14 , and 15 . , 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 , loading and unloading & stacking sand/ stone aggregate ( less than 40 m 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 , supplying fitting & fixing zn-alloy steel sheet work in roof , m . s . structure with hollow sectins ( square or rectangula shape conforming to is 806-1986 soan yopti 12 mtr , display board , gst