Ключевые слова: america, apartment, assemble, blue sky, builder, building, cement, close up, cloud, commercial, complex, concrete, condominium, construction, crane, development, elevator, elevator shaft, engineering, exterior, facade, high, hoist, industrial, industry, isolated, lift, lift shaft, lifting, looking up, machine, maintenance, metal, modern, richardson, safety, scaffolding, shaft, site, stand alone, steel, structure, tall, texas, tower, transportation, upward, wall, work, worker,