supply of cow shed or cattle shed for shibpur gp , cow shed / cattle shed , hire charges of concrete mixer 0 . 25 to 0 . 40 cum with hopper , seam bolts and nuts 6 mm dia and 25 mm long , stone aggregate ( single size ) :20 mm nominal size , stone aggregate ( single size ) : 10 mm nominal size , portland cement , coarse sand ( zone iii ) , galvanised steel plain 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 , g . i limpet washer , bitumen washer , g . i . plain washer for seam bolts , g . i . pipes 32 mm dia , stone aggregate below 40 mm nominal size , coarse sand , cement , galvanised steel corrugated sheets , sundries , medium sand , coarse sand , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , 1st class traditional bricks ( kiln burnt ) , other local wood , ordinary teak wood , bright finished or black enameled mild steel butt hinges 50x37x 1 . 50 mm , polythene sheet ( 150 gm per sqm )