Ключевые слова: architect, architecture, background, blue, blueprint, build, builder, business, cement, city, concrete, construction, contractor, crane, design, development, engineer, equipment, estate, formwork, foundation, hard, hat, helmet, high, house, industrial, job, labor, man, manual, material, metal, occupation, outdoors, people, professional, project, reinforcement, safety, scaffolding, site, steel, structure, technology, tower, transportation, urban, workers, working,