Ключевые слова: activity, architecture, background, blue, building, building site, business, city, concrete, construction, construction site, crane, development, engineering, equipment, growth, heavy, high, housing, housing development, industrial, industry, infrastructure, lift, lifting, machine, machinery, modern, nobody, outdoor, overhead, project, safety, site, sky, skyscraper, steel, structure, tall, technology, tower, urban, work, workplace,