Details: earth work in excavation by mechanical means (hydraulic excavator) / manual means over areas (exceeding 30cm in depth, 1.5m in width as well as 10 sqm on plan) including disposal of excavated earth, lead upto 50m and lift upto 1.5m, disposed earth to be levelled and neatly dressed.-all kinds of soil manufacturing of cement concrete block(size=0.45m x 0.45 mx0.30m) with cement concrete 1:4:8(1 cement :4 river sand:8 jhama brick aggregate of 40 mm. nominal size) including centering and shuttering and engraving of si. no. of each block as per direction of the enginee - in - charge. placing of sand cement/cement concrete blocks of size 0.45m x 0.45m x 0.30m in of river bnak and in river bed including preperation of bed or launching apron as per direction of the engineer - in- charge. supplying carrying and laying of inverted filter in of river banks below c.c . blocks including preparation of subgrade etc.(jhama aggregate of different sizes upto 40mm) as per drawing and direction of en