525/2019-20 construction of pcc road from house of kalo molla to rahaman tea shop via sk joynal house at aima , construction of pcc road , siver sand , 1st class picked jhama bricks ( traditional ) , hire charges of shuttering plank ( 25mm-30mm ) without prop including all fittings , stone aggregate ( single size ) 10 mm nominal size , stone aggregate ( single size ) 20 mm nominal size , portland cement , loading unloading & stacking sand/stone aggregate ( less than 40 mm nominal size ) , coarse sand , hire charges of concrete mixer 0 . 25 to 0 . 40 cum with hopper , thermocol 12 . 5 mm thick , polythene sheet ( 150 gm per sqm . )