Ключевые слова: architecture, assembly, background, beam, building, building exterior, built structure, composition, construction, construction frame, construction industry, construction site, design, detail, engineer, exterior, frame, galvanized, home, house, industry, iron, material, metal, pattern, prefabricated, project, property, purlin, real estate, residence, roof, roof beam, sky, steel, steel purlin, structure, technology, truss, truss roof, working,