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ORDINANCE NO. NS-15t8 Page Two B. HIGH RISK BUILDINGS: Any building, other than an essential building, having an occupant load of 100 occupants or more as determined pursuant to Chapter 33 of the Uniform Building Code and which said building is occupied for its intended use for more than 20 hours per week. EXCEPTION: High risk buildings shall not include buildings having exterior walls braced with masonry cross walls or wood frame cross walls spaced less than 40 feet apart in each story. C. LOW RISK BUILDINGS: Any building, other than an essential building, having a capacity of less than 20 occupants determined pursuant to Chapter 33 of the Uniform Building Code. D. MEDIUM RISK BUILDINGS: Any building having an occupant load of 20 occupants or more as determined pursuant to Chapter 33 of the Uniform Building Code that is not classified as a high risk building or an essential building. E. UNREINFORCED MASONRY WALL: A masonry wall contain- ing less than one-half the reinforcing steel required for reinforced masonry walls in accordance with Chapter 24 of the Uniform Building Code. Safety. DEPARTMENT: Shall mean Department of Building G. DIRECTOR: Shall mean the Director of Building Safety or h--~ designated representative. SEC. 8-2003. RATING CLASSIFICATION A. CLASSIFICATION: The rating classifications as exhibited in Table A are hereby established and each building within the scope of this Article shall be placed in one such rating classification by the Director. TABLE A RATING CLASSIFICATIONS GENERAL USE OF BUILDING RATING CLASSIFICATION Essential Buildings High Risk Buildings Medium Risk Buildings Low Risk Buildings I II III IV For the purpose of this Article, portions of buildings constructed to act independently when resisting seismic forces may be placed in separate rating classifications. B. MULTIPLE CLASSIFICATIONS. For the purpose of determining a Rating Classification, a building with more than one rating classification shall be classified in the Rating Classification which is the most restrictive. C. MULTIPLE OCCUPANCIES. For the purpose of de- termining rating classifications the total occupant load as determined pursuant to Chapter 33 of the Uniform Building Code of all occupancies in the building shall be used.