Ключевые слова: abstract, background, bushing, business, canalization, cement, clouds, concrete, connect, construction, culvert, dehydration, development, ditch, drain, drainage, drainpipe, ducts, effluent, housing, identical, industrial, industry, irrigation, manufacturing, materials, pile, piled, pipe, plumbing, pressure, repair, road, round, sewage, sewer, sewerage, site, sky, stack, storage, tube, underground, warehouse, waste, water, water purifier, yard,