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