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9-2.2 Classification and Definitions.
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a. POTENTIALLY HAZARDOUS BUILDINGS as used in this section shall mean only buildings constructed prior to the adoption of local building codes requiring earthquake resistant design of buildings and constructed of unreinforced masonry wall construction.

b. All identified Potentially Hazardous Buildings shall be assigned by the Building Official to one of the following classifications:

1. ESSENTIAL BUILDINGS:

Any building housing a hospital or other medical facility having surgery or emergency treatment areas; fire or police stations; municipal government disaster operation and communication centers.

2. HIGH RISK BUILDINGS:

Any building, not classified an essential building, having an occupant load of one hundred (100) or more, as determined by Section 3302 (a) of the Building Code.

EXCEPTION: A high risk building shall not include the following:

(a) Any building having exterior walls braced with masonry crosswalls or wood frame crosswalls spaced less than forty (40') feet apart in each story. Crosswall shall be full story height with minimum length of one and one-half (1 1/2) times the story height.

(b) Any building used for its intended purposes, as determined by the Building Official, for less than twenty (20) hours per week.

3. MEDIUM RISK BUILDING:

Any building, not classified as a high risk building or an essential building, having an occupant load of twenty (20) occupants or more as determined by Section 3302 (a) of the Building Code.

4. LOW RISK BUILDINGS:

Any building, not classified as an essential building, having an occupant load of less than twenty (20) occupants as determined by Section 3302 (a) of the Building Code.

5. EXEMPT BUILDINGS:

(a) Warehouses;

(b) Dwellings of five (5) units or less;

(c) State and Federal Buildings;

(d) Historical - Qualified historical buildings shall comply with State Historical Building Code established under Part 8, Title 24 of the California Administrative Code;

(e) All buildings constructed with permits issued after the adoption of Lake County Ordinance No. 422 on October 2, 1961. (Ord. #24-90, S1)