Ключевые слова: architecture, assembly, background, black and white, building, building exterior, built structure, composition, construction, construction frame, construction industry, construction site, design, engineer, frame, galvanized, house, industry, iron metal, lightweight, material, metal, modern, no people, outdoors, pattern, precast, prefabricated building, roof, roof beam, steel, structure, truss, truss roof, vertical, wallpaper background, white background, working,