Ключевые слова: architectural, assembly, building, building area, cast iron, construction site, country, crane, development, dig, ditch, drinking water, earthmoving, energy, engineering, excavator, freshwater, gas, ground, high, hydrant, infrastructure, installation, large, laying, line, lock, main, main line, materials, new, oil, oil pipeline, outside, pipe, pipe construction, pipeline, public, supply, utilities, water pipe, water supply, work,