Ключевые слова: abstract, architecture, background, bar, building, business, closeup, concrete, construct, construction, corrosion, crane, engineering, frame, group, heavy, industrial, industry, iron, line, material, mesh, metal, metallic, new, nobody, pattern, pile, rail, rebar, reinforce, reinforced, reinforcement, reinforcing, rigid, rod, rust, rusted, rusty, site, steel, strong, structure, technology, texture, used, wire, work, worker, workers,