Ключевые слова: canalization, concrete, construction, construction site, ditch, drain, drainage, drainage system, engineering, equipment, excavation, foundation, ground, ground plumbing, industrial, industry, installation, laying, laying pipes, maintenance, outdoor, pipe, pipeline, pipes, piping, plastic, plastic pipes, plumber, plumbing, plumbing laying, plumbing line, pvc, service, sewage, sewer pipes, supply, system, trench, under plumbing, underground, waste, water, water pvc,