Ключевые слова: architecture, armored concrete, background, belt, blue, building, buildings, business, cement, city, civil, company, concept, concrete, construct, construction, contractor, crane, design, development, engineer, engineering, equipment, estate, frame, glass, high, house, industrial, industry, infrastructure, iron, material, metal, modern, new, office, people, professional, project, safety, seismic, site, sky, skyscraper, steel, structure, technology, tower, unfinished, urban, work, worker,