on the construction site - earthwork with laying the supply and disposal lines such as sewage pipes and power supply

green blue food soil jewellery leaf organ produce hand flower circle eye yellow invertebrate art rock water background build business canalization concept construct construction contamination design development drain drainage environment equipment excavation factory house housing industrial industry infrastructure installation manufacturing material old pipe pipeline pipes piping plastic plumber plumbing pollution project pvc round sanitary sewer site system technology tool tube underground waste wastewater basic work before erected includes earthwork laying supply disposal lines sewage power