Details: excavation of earth below g.l. by manually or by mechanical means for laying of sewers, man-holes, gully pits, chambers etc. in soil including extra excavation below inverts, trimming & dressing of sides, levelling and back filling of trenches by excavated earth in 20 cm layers,watering and ramming the same including removal of surplus earth or other dismantled material up to a distance of 50 meters from the center of trenches and cleaning of site properly after completion of the work. excavation by mechanical means shall be restricted upto 90 cm above invert levels at every point of excavation. excavation from invert levels to 90 cm above shall be done by manually only. excavation in soil mixed with morum,shingle & kankar etc. using of any specials t&p, if required. 0 to 1.50 m below g.l 1.5 to 3.0 m below g.l 3 to 4.5 m below g.l 4.5 to 6.0 m below g.l 6 to 7.5 m below g.l providing and laying in position specified grade of reinforced cementconcrete, excluding the cost of cente
Sector: Water supply and Sewerage