038.maintenance and repair areas

3.4.5. Maintenance and Repair Areas
Concrete shells could also be used in the Maintenance and Repair Areas where some skylights with 7cm of water could let the light in and work. Several buildings dedicated to this activity would be connected between them and also to the wheeled corridor ring around the settlement. An airlockĀ  building in concrete without skylights would provide access to the Martian surface.