Ключевые слова: activity, architecture, building, buildingsite, cabin, cement, city, concrete, construction, construction site, crane, development, engineering, equipment, erect, frame, high, house, housing, industrial, industry, lifting, mobile crane, operating, project, real estate, safety, scaffolding, silhouette, site, sky, skyscraper, steel, structure, tall, technology, tower, tower crane, under construction, urban,