laying drain pipes and concrete manholes for stormwater system. connecting a trench drain to a concrete manhole structure

laying drain pipes concrete manholes stormwater system connecting trench manhole structure building construction site crane culverts dig dirty ditch drainage pipe excavation works excavator foundation ground grunge hole infrastructure installation job large municipal pipeline pit plumbing pumping reinforced repair work replacement sanitary sewer sewage wells sewerage storm underground utility water main tightness construct utilities