supply of material for construction of duckery shelter for bird project at babla under mgnrega , portland cement , coarse sand , 1st class traditional bricks ( kiln burnt ) , stone aggregate ( single size ) : 40 mm nominal size , stone aggregate ( single size ) : 20 mm nominal size , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , loading unloading & stacking stone aggregate ( above 40mm nominal size ) , stone aggregate ( single size ) : 10 mm nominal size , medium sand , fine sand , galvanized steel plain sheets , seam bolts and nuts 6 mm dia and 25 mm long , g . i . plain washer for seam bolts , bitumen washer , supplying fitting & fixing zn-al alloy steel sheet work in roof , hire charges of shuttering plank ( 25mm-30mm thick ) without prop including all fittings , polythene sheet ( 150 gm per sqm ) , wire mesh ( rabbit ) , other local wood , water thinnable cement primer for interior wall surface , having voc content less than 50 gms / litre , red oxid zinc chromate primer , acrylic exterior paint , synthetic enamel paint , having voc ( volatile organic compound contant less than 150 gm / litre , gi wire , tor steel rods / hysd bars / tmt bars ( jsw / jspl / shyam / srmb / bmasl / elecrosteel / ssl ) ( fe415 / fe500 / fe500d conforms to is: 1786 ) , loading , unloading and stacking by mannual means of steel , m . s . structual with hollow sections ( square or rectangular shape ) conforming to is: 806-1968 & is: 1161-1998 ) span up to 12 mtr , gst