People who engage in civil engineering don't have to live on the construction site. Most people living in this place are far from home, or for other reasons.

"Civil engineering": that is, civil construction engineering, which is the general name of civil engineering and construction engineering. It is an engineering discipline to build various facilities and places for human life, production, protection and other activities, covering the construction of buildings, structures and engineering objects in the above-ground, underground, land, water and underwater houses, roads, railways, airports, bridges, water conservancy, ports, tunnels, water supply and drainage, protection and other engineering facilities and places, including both survey and engineering construction.

Civil engineering involves the existence, activities and development of all walks of life in the national economy. Without the space and place for civil construction activities, there would be no existence and development of all walks of life. All this shows the importance of civil engineering, so civil engineering construction is called infrastructure.