Ключевые слова: architecture, background, bar, bend, black, building, close up, concrete, construct, construction, corrosion, detail, dirty, engineering, form, grunge, hard, industry, iron, mark, material, metal, old, oxidation, oxide, pattern, pile, rebar, red, reduction, reinforce, reinforced, reinforcement, rod, rough, rust, rusty, safety, site, stack, steel, strength, strong, structure, texture, together, tying, wire, work, yellow,