Ключевые слова: activity, architect, architecture, background, blue, blueprint, builder, building, business, city, civil, concept, concrete, construction, contractor, crane, design, development, engineer, engineering, equipment, estate, hardhat, helmet, high, home, house, housing, industrial, industry, job, male, man, occupation, people, professional, project, safety, scaffolding, site, sky, steel, structure, team, teamwork, technology, urban, work, worker, workplace,