Ключевые слова: abstract, architecture, background, bars, build, buildings, city, columns, construct, construction, development, engineering, equipment, exterior, frame, framework, gray, grey, grid, housing, industrial, industry, iron, long, patterns, project, railings, repairing, restoration, rods, safety, scaffold, scaffolding, secure, shapes, site, skeleton, steel, structure, tall, technology, urban, vertical, work,