Section 303.2, Addition to Group E Occupancy, of the IEBC, is hereby amended by deleting said section and inserting in lieu thereof the following:
Section 303.2 Addition to Group E Occupancy Where an addition is added to an existing Group E occupancy located in an area where the shelter design wind speed for tornadoes in 250 mph in accordance with Figure 304.2 (1) of ICC 500 and the program occupant load of the addition is 50 or more, the addition shall have a storm shelter constructed in accordance with Chapters 1 through 5 & 8 of ICC 500.
For the purposes of this section the installation of portable buildings for utilization on the campus or site for educational purposes shall be considered as an addition.
Exceptions:
1. Group E day care facilities.
2. Group E occupancies accessory to place of religious worship.
3. Additions meeting the requirements for shelter design in ICC 500.
4. Accessory structures and additions to existing group E sites where the occupancy classification of said structures are classified as Groups A-5 and U
The aggregate area of all additions within a 10 (ten) year period shall be factored when determining the requirements of this section.