Ключевые слова: architecture, backdrop, background, bars, black, bridge, building, built, cement, column, concrete, construction, development, engineering, equipment, extensive, girder, grid, industrial, industry, iron, line, material, metal, monochrome, pattern, platforms, project, rebar, reinforcement, safety, site, stack, stage, steel, strength, strong, structural, structure, support, tie, wallpaper, white, wire, work,