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a. All structures of Group R, Division 1 and 3 occupancies damaged by a natural hazard and subsequent events, shall be repaired in accordance with the following criteria:

1. When the damaged area of the foundation is equal to or greater than fifty (50%) percent of the structure footprint area, a new continuous concrete footing with reinforced concrete or reinforced masonry stem wall; or a new continuous concrete footing with plywood sheathed cripple wall shall be installed around the full perimeter of the structure in accordance with the requirements of the California Building Code and referenced in Title 24, California Code of Regulations. Exception: When designed and detailed by a California registered civil or structural engineer, an alternative foundations system may be used.

2. When the damaged area of the foundation is less than fifty (50%) percent of the structure footprint area, the damaged elements shall be repaired in accordance with the details included as Appendix A or as designed and detailed by a California registered civil or structural engineer.

3. All damaged porches, porch covers, and exit stairways shall be repaired so as to comply with the current code.

4. All damaged structures currently considered as historic places or qualifying structures within historic districts shall be repaired in accordance with these standards with due consideration given to the historical ratings. Additional standards and criteria, as noted in the state of California Historic Building Code, shall apply. When conflicts occur between these standards and the State of California Historic Building Code, the Historic Building Code shall take precedence.

b. Damaged structures of all other occupancies, which are regulated by local government, shall be repaired in accordance with the following criteria:

1. When the estimated cost of repair does not exceed ten (10%) percent of the replacement cost of the structure, the damaged portions shall be restored to their predamage conditions.

2. When the estimated cost of repair is greater than ten (10%) percent but less than fifty (50%) percent of the replacement cost of the structure, the damaged elements as well as all critical structural ties associated with those elements, shall be repaired and/or brought into conformance with the current Code.

3. When the estimated cost of repair exceeds fifty (50%) percent of the replacement cost of the structure, the entire structure shall be brought into conformance with the current Code.

c. All damaged chimneys without a foundation and/or damaged masonry chimneys shall be repaired to the satisfaction of the Building Inspector.

d. New masonry chimneys or reconstructed portions of damaged masonry chimneys having a foundation shall be constructed in accordance with Chapter 37 of the current Code. (Ord. #2007-133)