supply of different materials for concrete road ( a ) construction of cc road from house of dilip roy to house of jogen roy within cooch behar- i dev. block supply work under mgnega supply work under mgnega , concrete road , 1st class picked jhama bricks ( traditional ) , stone aggregate ( single size ) :20 mm nominal size , stone aggregate ( single size ) : 10 mm nominal size , portland cement , stone aggregate ( single size ) : 40 mm nominal size , carraige of stone aggregate below 40 mm nominal size , carraige of stone aggregate40 mm nominal size and above , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , coarse sand , loading unloading & stacking sand / stone aggregate ( labove 40mm nominal size ) , rcc pipe 600 mm dia np- 3 spigot , loading, unloading & stacking by manual means ( r.c.c. pipes , c.i. pipes and unreinforced cement pipes ) 600, 700, 750 & 800 mm dia , hire charges of shuttering plank ( 25mm-30mm thick ) without prop including all fittings , empty gunny bag , bamboo ( 8cm-10cm dia ) including fixing , nail , display board , gst