Hawaii Administrative Rules
Title 3 - DEPARTMENT OF ACCOUNTING AND GENERAL SERVICES
Building Code Council
State Building Code
AMENDMENTS TO THE 2018 ICC INTERNATIONAL EXISTING BUILDING CODE (IEBC)
6 - Change of Occupancy Seismic Loads - Prescriptive Method
Current through January, 2025
Section 50643 is amended to read as follows:
"506.4.3 Seismic loads (seismic force-resisting system)
Where a change of occupancy results in a building being assigned to a higher risk category, or where the change is from a Group S or Group U occupancy to any occupancy other than Group S or Group U, the building shall satisfy the requirements of Section 1613 of the International Building Code for the new risk category using full seismic forces. Exceptions:
3. Where the area of the new occupancy is less than 10 percent of the building area, and the new occupancy is not assigned to Risk Category IV, compliance with this section is not required. The cumulative effect of occupancy changes over time shall be considered.
4. Where a change of use results in a building being reclassified from Risk Category I or II to Risk Category III and the seismic coefficient, SDS, is less than 0.33, compliance with this section is not required.
5. Unreinforced masonry bearing wall buildings assigned to Risk Category III and to Seismic Design Category A or B, shall be permitted to use Appendix Chapter A1 of this code.
6. Where the change is from a Group S or Group U occupancy, use of reduced seismic forces shall be permitted".
