providing laying of gi pipes for w no 4 pyt ajote under pri-2 excavating trenches of required widthfor pipes, cables etc including excavation of rocks, dressing of sides ramming of bottomsdepth up to 0.50 m including getting out the excavated soil and disposing of surplus soil up to 50 m lead with all kind of soil . 3 providing and fixing of 15 mm dia ( l ) complete with gi fittings excluding trenching and refilling etc. ( external work ) 4 providing and fixing of 40 mm dia ( l ) complete with gi fittings excluding trenching and refilling etc. ( external work ) 5 filling excavated earth back in trenches 80% qty 6 carriage of g.i. pipe avg. distance1.5 kmby hl 7 extra labour for cutting rethreading , bending fitter 8 extra labour for cutting rethreading , bending labour 9 making interconnections of old and new pipes 10 providing / fixing of gate valve 40 mm 11 providing / fixing of gate valve 50 mm