T2017 306 1090 Providing Sewerage scheme to NAC Narkanda in Tehsil Kumarsain Distt Shimla

Excavation in foundation and trenches etc. In earthwork lift 1.5 m, stacking the excavated soil not more than 3 m clear from the edge of the excavation and then returning the stacked soil in 15 cm layers when required into plinth sides of foundation etc., consolidateing each deposited layer by ramming and watering and then disposing off all surplus excavated earth as directed within a lead of 20 m in pick and jumper work (for retaining wall).

Providing and laying CC 1:6:12 (1 Cement : 6 Sand : 12 Graded Stone aggregate 40 mm nominal size) and curing complete excluding cost of form work in foundation and plinth.

Providing Form work with steel plates 3.15mm thick welded with angle iron in frame 30x30x5mm so as to give a fair finish including centring , shuttering, strutting & propping etc. with wooden battens & ballies, height of propping & centring below supporting floor to ceiling not exceeding 4 mtrs.& removal of the same for insitu reinforced concrete & plain concrete work in.

Vertical surfaces such as walls (any thickness) partitions & the like I/c attached pillasters, buttresses plinth and string courses and the like :

Providing and laying of cement concrete 1:5:10 ( 1 Cement : 5 Sand : 10 Graded Stone aggregate 40 mm nominal size ) with 15% plum in R/ Wall & B/ Wall.

Stone filling behind retaining wall and breast wall.

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