Ключевые слова: adult, architecture, builder, building, building activity, building contractor, built structure, business, collaboration, concrete, construct, construction, construction frame, construction industry, construction site, construction worker, development, engineer, engineering, equipment, factory, formwork, framework, helmet, horizontal, industrial, industry, infrastructure, iron, labor, laborer, man, manufacturing, material, men at work, metal, occupation, outdoors, person, professional, safety, scaffolding, site, steel, structure, teamwork, work, worker, working,