Ключевые слова: architecture, block, blue, building, building activity, building contractor, business, cement, city, column, commercial, concrete, construction, construction frame, construction machinery, construction material, construction site, contemporary, crane, development, digger, engineering, estate, frame, gray, high, hoisting, house, housing project, industry, machine, material, mesh, metal, new, office building, planning, progress, scaffold, scaffolding, silhouette, site, sky, steel, tall, tower, tower crane, urban, wall,