Field of engineering that deals with the design, construction, and management of physical infrastructures (buildings, highways, maglev tubes, spacedocks, recycling piping, bridges, moving walkways, etc etc) necessary for urban or habitat existence. Most civil engineering uses self-extending smart micro, meso, and nano-materials. Also involves consideration of regolith or soil mechanics, surveying, construction methods, smart structures, pollution control, the effect of environment or accident on the structure, urban planning, system analysis, and so on.