add extra for laying of one number additional pvc insulated and pvc sheathed / xlpe power cable of 1.1 kv grade direct in ground in the same trench in one tier horizontal formation including excavation of trench of size additional 20 cm in width, with procedure as per following points :- (a) make a river sand bed of height 125 mm along the trench, (b) lay another cable in middle of trench in such manner that spacing between another cable is 20 cm., (c) provide river sand bed of height 125 mm on top of the cable. (d) lay the protective common burnt clay f.p.s. bricks of class designation 75 /sand stone slabs of 50 mm thickness and 225 mm wide just above the sand bed vertically across the cable ( approx. 9 no. bricks per mtr.), (e) backfill the excavated soil leaving 300 mm from the ground level, (f)lay the cable warning tape and again back-fill the remaining portion of the trench upto the ground level and compacting the earth
