supply of materials for construction of concrete road from kar para concrete road to toilet of manoharpur high school at man in manoharpur-ii gram panchayet under chandrakona-i panchayet samiti ( under fund mgnrega ) .- fine sand , stone aggregate ( single size ) : 10 mm nominal size , stone aggregate ( single size ) :20 mm nominal size , portland cement , stone aggregate below 40 mm nominal size , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , coarse sand , hire charges of shuttering plank ( 25mm-30mm thick ) with prop including all fittings , polythene sheet ( 150 gm per sqm ) , hire charges of concrete mixer 0 . 25 to 0 . 40 cum with hopper , vibrator ( needle type 40 mm ) , thermocol 12 . 5 mm thick .