Ключевые слова: accuracy, architecture, bar, beam, building, cable, carpenters, civil, concrete, construction, danger, dangerous, design, drawing, engineering, fabricate, form work, ground, hammer, height, helmet, house keep, industry, install, instrument, level, logistic, material, measure, metal, modular, object, pipe, platform, reinforcement, risk, safety, scaffolding, site, slab, speed, steel, structure, support, task, team, tie, timber, work, workers,