shifting of house connection or stand post connection from existing main to new main along with supply of necessary materials at ward no.01 and ward no. 19, under khardah municipality - shifting house connection or stand post connection from existing main to new main after excavation through any kind of soil and road materials up to required depth. dismantling existing ferrule with all fittings. plugging hole of old main with g.i. plug. drilling and tapping the new main. refixing the ferrule on the new main with serviceable old g.i pipes and other specials (new g.l. pipes and other specials, if required to be installed shall be paid extra) and back filling the trench with excavated materials all complete as per specification and direction of the engineer- in-charge.