Ключевые слова: architecture, assembly, background, beam, beams, beautiful, blue, building, built, business, cloud, color, construction, design, engineer, engineering, exterior, frame, framework, framing, girder, home, house, industrial, industry, iron, isolated, light, line, material, materials, metal, modern, pattern, plant, project, purlin, roof, shadow, site, sky, steel, structural, structure, technology, truss, under, unfinished, warehouse, workshop,