Ключевые слова: activity, build, builder, building, cement, civil, concrete, construction, contractor, discharge, engineering, equipment, floor, industrial, industry, infrastructure, job, leveling, male, man, manual, mason, mix, mixer, mixing, mortar, outdoors, paving, pour, public, repair, road, sidewalk, site, street, surface, thailand, tool, trowel, urban, wet, work, worker, workers,