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 per direction of engineer-in-charge, within a lead of 50 m – all kinds of soil - pipes, cables etc , exceeding 80mm dia but not exceeding 300 mm dia constructing masonry chamber 90x90x100 cm inside, in brick work in cement mortar 1:4 (1 cement : 4 fine aggregate) for sluice valve, with c.i. surface box 100mm top diameter, 160mm bottom diameter and 180 mm deep (inside) with chained lid and rcc top slab 1:1.5:3 mix (1 cement : 1.5 fine aggregate 3 graded stone aggregate 20mm nominal size), including necessary excavation, foundation concrete 1:5:10 (1 cement : 5 fine aggregate
Sector: PWD