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City of Portland

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24.85.067 Voluntary Seismic Strengthening.

(Added by Ordinance No. 178831, effective November 20, 2004.) Subject to permit approval, a building may be strengthened to resist seismic forces on a voluntary basis provided all of the following conditions are met:

A. Mandatory seismic strengthening is not required by other provisions of this Title;

B. The overall seismic resistance of the building or elements shall not be decreased such that the building is more hazardous;

C. Testing and special inspection are in accordance with the OSSC and the City of Portland Administrative Rules;

D. The standard used for the seismic strengthening is clearly noted on the drawings along with the pertinent design parameters; and

E. A written narrative shall be clearly noted on the drawings summarizing the building lateral system, seismic strengthening and known remaining deficiencies. The summary information shall reflect the level of analysis that was performed on the building.