construction of flow irrigation scheme langza ( balance work ) in g.p langzain spiti valleytehsil kaza distt l&s ( hp ) ( sh:- patra cutting rd 10520 to rd 13770=3250 mtrs , laying, jointing and testing of hdpe pipe in trenches in gravity main in various rds200 mm & 180mmin totallength=12100 mtrs, construction of desilting device=1no , construction of delivery tank= 1 no, construction of outlet chamber =20 no, construction of crate work at various rds = 815 mtrs , construction of stone masonry r / wallat various rds =150mtrs , construction of cement concrete lining channel at various rds=150 rmt and construction of r.c.c s / tank = 1 no ( 10, 00, 000 litrscapacity )