attending 250 mm hdpe leak work in various location in melapalayam zone - earthwork excavating and depositing on bank withan initial lead of 10m & initial liftm of 2m,in hard stiff clay,stiff black cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil asper standard specification20.b 2 supply and delivery of 250mm ss clampset 3 labour charges for fixing the 250mm ss clampset 4 dewatering by engaging diesel pumpset for 5.00 hp 5 refilling with excavated soil (other than sand )complying with the standard specification for filling in foundation