Ключевые слова: activity, architecture, area, background, builder, building, business, cement, city, civil, concrete, construction, contractor, crane, development, engineer, engineering, equipment, estate, factory, floor, frame, ground, heavy, industrial, industry, inspection, job, machine, machinery, man, people, project, road, sand, site, space, steel, structure, surveying, technology, top, tower, truck, under, urban, view, work, worker, workplace,