Ключевые слова: architecture, assembly, backgrounds, beam, black and white, building, building exterior, built structure, composition, construction, construction industry, construction site, design, detail, engineer, exterior, frame, gable, galvanized, home, house, industry, iron, isolated, material, metal, outdoors, pattern, precast, prefabricated, project, property, purlins, rafter, real estate, residence, ridge purlin, roof, roof beam, sky, steel, structure, technology, tie beam, truss, truss post, truss roof,