Ключевые слова: activity, apartment, architectural, architecture, background, beam, blue, built, cable, color, concrete, construction, crane, development, engineering, equipment, exterior, form, formwork, frame, gray, growth, heavy, home, horizontal, housing, image, industry, iron, machinery, metal, new, outdoors, ownership, plan, railing, reinforcement, residential, roof, safety, site, sky, skyscraper, steel, strength, structure, tall, time, tower, urban,