Ключевые слова: abstract, architecture, beam, blue, bridge, build, building, business, city, closeup, construct, construction, crosspiece, design, detail, engineering, exterior, factory, frame, framework, girder, high, house, industrial, industry, iron, light, material, metal, modern, pattern, perspective, project, roof, scene, silhouette, site, sky, steel, steelwork, strength, strong, structural, structure, sun, support, technology, texture, truss, urban,