Ключевые слова: architecture, background, bar, bars, building, closeup, concrete, connection, construction, engineering, frame, framework, grid, hard, heap, industrial, industry, iron, material, mesh, metal, metallic, outdoor, pattern, plate, rebar, rectangle, reinforce, reinforced, reinforcement, reinforcing, rod, rust, rusty, square, stack, stacked, steel, strong, structural, structure, supply, support, texture, wire,