re tender supplying materials for poultry shelter construction in maruthonkara gp , hollow bloks oof size 40x20x10cm , portland cement , cement , coarse sand (zone iii) , coarse sand , g.i pipes 50 mm dia , g.i. pipes 40 mm dia , red oxide zinc chromate primer , welding by electric plant , g.i. plain washer thick , bitumen washer , galvanised steel j or l hooks 8 mm dia , precoated glavanished iron profile sheet 0.50 mm tct , galvanised wire mesh of average width of aperture 1.4 and nominal dia. of wire 0.63 mm , wire nails , stone aggregate(single size):20 mm nominal size , stone aggregate(single size): 10 mm nominal size , hire charges of concrete mixer 0.25 to 0.40 cum with hopper , vibrator (needle type 40 mm)