Laserfiche WebLink
File Number: 16-629 <br />2. Two-story buildings with a maximum plan dimension not exceeding 50 feet (15240 <br />mm) may have braced wall lines supported on continuous foundations at the <br />exterior walls only, provided: <br />a. Cripple walls do not exceed 4 feet (1219 mm) in height. <br />b. Where the first story is supported on a raised wood framed floor, the interior <br />braced wall panels are directly supported by either doubled joists, <br />continuous 4x blocking or minimum 4x floor beams. <br />Section 7-5-195: REPAIRS. Title 24, California Existing Building Code, Part 10, Section <br />404 is amended as follows <br /> <br />Sections 404.2.4 through 404.2.4.2 and Tables 404.2.4.1 and 404.2.4.2 are added as <br />follows: <br /> <br />404.2.4 Seismic Evaluation and Design Procedures for Repairs. The seismic evaluation <br />and design shall be based on the procedures specified in the California Building Code, ASCE <br />31 Seismic Evaluation of Existing Buildings (for evaluation only) or ASCE 41 Seismic <br />Rehabilitation of Existing Buildings. The procedures contained in Appendix A of the <br />International Existing Building Code shall be permitted to be used as specified in Section <br />3405.5.1.1.3. <br />404.2.4.1 Compliance with CBC level seismic forces. Where compliance with the seismic <br />design provisions of the California Building Code is required, the procedures shall be in <br />accordance with one of the following: <br />1. One-hundred percent of the values in the California Building Code. Where the existing <br />seismic force-resisting system is a type that can be designated as “Ordinary,” the values of R, <br />Ωo, and Cd used for analysis in accordance with Chapter 16 of the California Building Code <br />shall be those specified for structural systems classified as “Ordinary” in accordance with <br />Table 12.2-1 of ASCE 7, unless it is demonstrated that the structural system will provide <br />performance equivalent to that of a “Detailed,” “Intermediate” or “Special” system. <br />2. Compliance with ASCE 41 using both BSE-1 and BSE-2 earthquake hazard levels and the <br />corresponding performance levels in Table 404.2.4.1. <br />TABLE 404.2.4.1- Please see attachment A <br />PERFORMANCE CRITERIA FOR CBC LEVEL SEISMIC FORCES <br />404.2.4.2 Compliance with reduced CBC level seismic forces. Where seismic evaluation <br />and design is permitted to meet reduced California Building Code seismic force levels, the <br />procedures used shall be in accordance with one of the following: <br />1. The California Building Code using 75 percent of the prescribed forces. Values of R, Ωo, <br />and Cd used for analysis shall be as specified in Section 3405.2.4.1 Item 1. <br />Page 12 City of San Leandro Printed on 11/15/2016