Ключевые слова: abstract, architecture, background, building, building materials, concrete, construct, construction, constructionsite, crane, development, engineering, equipment, factory, foundation, frame, high, house, industrial, industry, iron, job, labor, male, manual, metal, occupation, outdoor, person, project, protective, safety, scaffold, scaffolding, scene, site, skeleton, steel, steel bar, structure, technical, tools, urban, work,