supply of materials for construction of rbm road from the house of chandrakanta das to kalir pat , empty gunny bag , bamboo ( 8cm-10cm dia ) including fixing , nail , silver sand , 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 , stone aggregate ( single size ) :63 mm nominal size , stone aggregate 40 mm nominal size and above , stone aggregate below 40 mm nominal size , loading unloading & stacking stone aggregate ( above 40mm nominal size ) , stone screening type a ( 13 . 2 mm ) , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , river bed material , hire charges of diesel road roller- 8 to 10 tonne , display board , worksite facilities / creche / drinking water / first aid , gst