Details: excavating trenches by mechanical/ manual means of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, for all depth, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m : all kinds of soil pipes, cables etc, not exceeding 80 mm dia. pipes, cables etc. exceeding 80 mm dia. but not exceeding 300 mm dia providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:2:4 (1 cement : 2 coarse sand (zone-iii) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources) 1:5:10 (1 cement : 5 coarse sand (zone-iii) derived from natural sources : 10 graded stone aggregate 40 mm nominal size
Sector: General Admin