Notwithstanding the provisions of section 25.03.01 of this article, table R301.2.2.1.1 and section R301.2.2.1.2 of the Residential Code are amended to read as follows:
TABLE R301.2.2.1.1
SEISMIC DESIGN CATEGORY DETERMINATION
CALCULATED SDS | SEISMIC DESIGN CATEGORY |
CALCULATED SDS | SEISMIC DESIGN CATEGORY |
SDS < 0.17g | A |
0.17g < SDS < 0.33g | B |
0.33g < SDS < 0.50g | C |
0.50g < SDS < 0.67g | D0 |
0.67g < SDS < 0.83g | D1 |
0.83g < SDS < 1.00g | D2 |
1.00 g < SDS | E |
R301.2.2.1.2 Alternative determination of Seismic Design Category E. Buildings located in Seismic Design Category E in accordance with Figure R301.2(2) are permitted to be reclassified as being in Seismic Design Category D2 provided one of the following is done:
1. A more detailed evaluation of the seismic design category is made in accordance with the provisions and maps of the California Building Code. Buildings located in Seismic Design Category E per Table R301.2.2.1.1, but located in Seismic Design Category D per the California Building Code, may be designed using the Seismic Design Category D2 requirements of this code.
2. Buildings located in Seismic Design Category E that conform to the following additional restrictions are permitted to be constructed in accordance with the provisions for Seismic Design Category D2 of this code:
2.1. All exterior shear wall lines or braced wall panels are in one plane vertically from the foundation to the uppermost story.
2.2. Floors shall not cantilever past the exterior walls.
2.3. The building is within all of the requirements of Section R301.2.2.5 for being considered as regular.
2.4. For buildings over one story in height, the calculated SDS shall not exceed l.25g.
(Ord. 0-19-1357, 11-13-2019)
Notwithstanding the provisions of section 25.03.01 of this article, items 1, 3 and 5 of section R301.2.2.6 of the Residential Code are amended to read as follows:
1. When exterior shear wall lines or braced wall panels are not in one plane vertically from the foundation to the uppermost story in which they are required.
3. When the end of a braced wall panel occurs over an opening in the wall.
5. When portions of a floor level are vertically offset.
(Ord. 0-19-1357, 11-13-2019)