The NSSA prefers to use the terminology Community/Commercial when referring to tornado shelters that are used for public and private use by businesses (not Residential use) as defined in the ICC/NSSA 500 –2014 Standard and the FEMA P-361 criteria for Community Tornado Shelters. The term Community/Commercial best describes the real world applications for non-residential tornado shelters.
Flexibility – Can serve multiple purposes and provide storm protection
Archive Storage – Communications Control Rooms – Equipment Rooms
Mobility – Ability on most models to be relocated to help expansion or new locations
Wide Variety – Sizes, construction materials and accessories such as heating, cooling, and lavatories.
Adaptability – Can normally be added on to or connected to an additional tornado shelters.