Ключевые слова: abstract, architecture, background, bar, blue, build, building, cement, closeup, concrete, construction, development, engineering, environment, footing, foundation, frame, heavy, high, home, house, industrial, infrastructure, iron, material, mesh, metal, pile, pole, rack, reinforce, reinforced, reinforcement, rod, rust, rusty, safety, silhouette, site, skeletal, sky, steel, strength, strong, structural, structure, technology, texture, tool, work,