Ключевые слова: architecture, bridge building, building, business, civil, cloud, cold, concrete building, concreting, construction, contracting, contractor, danger, engineer, engineering, equipment, floor, for, gray, group, helmet, industrial, industry, infrastructure, job, labor, machine, machinery, men at work, metal, occupation, people, platform, professional, project, rebar construction, reinforcing steel bar, safety, site, sky, steel, steel bar, structural, team, teamwork, transportation, truck, winter, work, worker,