Ключевые слова: base, concrete, conduit, construction, construction site, cut, dig, drainage pipe, drainage system, ground, hole, industrial, installation, laying, located, mastic, metal, old, pipe, pipeline, pipes, pit, pumping, rammed, reconstruction, reinforced, replacement, sanitary sewer, sewage, sewer pipes, sewer wells, storm, system, trench, underground, water, water main, waterproofing,