Title 16 - Buildings and Construction

16.305 Existing Building Code

16.305.303

Section 303 of the International Existing Building Code is hereby amended to read as follows:

303.2 Addition to a Group E occupancy. Where an addition is added to an existing Group E occupancy, and the addition includes a gymnasium, located in an area where the shelter design wind speed for tornadoes is 250 mph (402.3 km/h) in accordance with Figure 304.2(1) of ICC 500 and the occupant load in the addition is 50 or more, the addition shall have a storm shelter constructed in accordance with ICC 500.

Exceptions:

1. 1.
  
  Group E day care facilities.
2. 2.
  
  Group E occupancies accessory to places of religious worship.
3. 3.
  
  Additions meeting the requirements for shelter design in ICC 500.

303.2.1 Design occupant capacity. The required design occupant capacity of the storm shelter shall include all buildings on the site, and shall be the total occupant load of the classrooms, vocational rooms and offices in the Group E occupancy. The code official may accept the student and staff projections that the school district has tabulated and presented to the School Board.

Exception: Where approved by the code official, the required design occupant capacity of the shelter shall be permitted to be reduced by the design occupant capacity of any existing storm shelters on the site.

303.2.2 Water closets and lavatories. Water closets and lavatories provided for additions to a Group E occupancy and required by ICC 500 shall be provided within the shelter or within the building served by the shelter.

(History: Ord. No. BC-3499, §56, 2026; Ord. No. BC-3286 §43, 2020)

Effective on: 1/1/1901