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2.3. Seismic evaluation and design of cripple walls and sill plate anchorage in residential <br /> buildings of light -frame wood construction in Occupancy Category I or 11 are permitted <br /> to be based on the procedures specified in Appendix Chapter A3. <br /> 2.4. Seismic evaluation and design of soft, weak, or open -front wall conditions in multiunit <br /> residential buildings of wood construction in Occupancy Category 1 or 11 are permitted to <br /> be based on the procedures specified in Appendix Chapter A4. <br /> 2.5. Seismic evaluation and design of concrete buildings in all Occupancy Categories are <br /> permitted to be based on the procedures specified in Appendix Chapter A5. <br /> 3. Compliance with ASCE 31 based on the applicable performance level as shown in Table <br /> 3405.2.4.2. It shall be permitted to use the BSE -1 earthquake hazard level as defined in <br /> ASCE 41 and subject to the limitations in item 4 below. <br /> 4. Compliance with ASCE 41 using the BSE -1 Earthquake Hazard Level defined in ASCE 41 <br /> and the performance level as shown in Table 3405.2.4.2. The design spectral response <br /> acceleration parameters S, and S, specified in ASCE 4l shall not be taken less than 75 <br /> percent of the respective design spectral response acceleration parameters Sus and SDI defined <br /> by the California Building Code and its reference standards. <br /> TABLE 3405.2.4.2 <br /> PERFORMANCE CRITERIA FOR REDUCED CBC <br /> LEVEL SEISMIC FORCES <br /> OCCUPANCY PERFORMANCE PERFORMANCE <br /> CATEGORY LEVEL LEVEL FOR USE <br /> WITH ASCE 41 BSE - <br /> (BASED ON CBC FOR USE WITH ASCE 1 EARTHQUAKE <br /> TABLE 1604.5) 31 HAZARD LEVEL <br /> Life Safety (LS) Life Safety (LS) <br /> 11 Life Safety (LS) Life Safety (LS) <br /> III Note a, Note b Note a <br /> IV Immediate Occupancy Immediate Occupancy (10) <br /> (10) <br /> a. Acceptance criteria for Occupancy Category III shall be taken as 80 percent of the acceptance <br /> criteria specified for Occupancy Category II performance levels, but need not be less than the <br /> acceptance criteria specified for Occupancy Category IV performance levels. <br /> b. For Occupancy Category III, the ASCE screening phase checklists shall be based on the life <br /> safety performance level. <br /> ORDINANCE NO. 2010 -013 31 <br />