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402.2 Open Space
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A covered mall building and attached anchor buildings and parking garages shall be surrounded on all sides by a permanent open space or not less than 60 feet (18 288 mm). An open mall building and anchor buildings and parking garages adjoining the perimeter line shall be surrounded on all sides by a permanent open space of not less than 60 feet (18 288 mm).
Exception: The permanent open space of 60 feet (18 288 mm) shall be permitted to be reduced to not less than 40 feet (12 192 mm), provided that the following requirements are met:
- The reduced open space shall not be allowed for more than 75 percent of the perimeter of the covered or open mall building and anchor buildings.
- The exterior wall facing the reduced open space shall have a fire-resistance rating of not less than 3 hours.
- Openings in the exterior wall facing the reduced open space shall have opening protectives with a fire protection rating of not less than 3 hours.
- Group E, H, I or R occupancies are not located within the covered or open mall building or anchor buildings.