construction of cattle shed construction of cattle shed , goat shelter and poultry shed , cattle shed , goat shelterand poultry shed construction materials , mild steel tubes hot finished welded type , with ready mixed red oxide zinc chromate primer of approved brand and manufacture on steel galvanised iron steel works , welding by electric plant , galvanised wire mesh of avarege width of aperture 1 . 4 and nominal dia of wire 0 . 63 mm , wire nails , galvanised steel j or l hooks 8 mm dia , precoated aluminium trafford sheet . 45 thick , stone for masonry work , portland cement , coarse sand , solid block of size 30*20*15 cm , cement mortar 1:6 ( 1 cement:6 fine sand ) , stone aggregate 40 mm nominal size , stone aggregate 20 mm nominal size , stone aggregate 10 mm nominal size