3B Public Hearing 2010 1115 - Laserfiche WebLink

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Table 2308.12.4 of the California Building Code 2010 Edition is amended as follows: TABLE 2308.12.4 WALL BRACING IN SEISMIC DESIGN CATEGORIES D AND E (Minimum Length of Wall Bracing per each 25 Linear Feet of Braced Wall Line CONDITION SHEATHING SDS < 0.50 0.50:5 S < 0.75 0.75:5 S :51.00 S > 1.00 One Story S -W 5 feet 4 inches 8 feet 0 inches 9 feet 4 inches 12 feet 0 inches For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. Section 7 -5 -195 REPAIRS. Section 3405 is amended as follows 3405.2.3 Extent of Repair for Noncompliant Buildings of the California Building Code , 2010 Edition is amended as follows: 3405.2.3 Extent of repair for noncompliant buildings. If the evaluation does not establish compliance of the predamage building in accordance with Section 3405.2.1, then the building shall be rehabilitated to comply with applicable provisions of this code for load combinations, including wind or seismic loads. The wind loads for the repair shall be as required by the building code in effect at the time of original construction or as required by this code, whichever is greater. Earthquake loads for this rehabilitation design shall be those required for the design of the predamage building, but not less than 75 percent of the prescribed in Section 1613. New structural members and connections required by this rehabilitation design shall comply with the detailing provisions of this code for new buildings of similar structure, purpose and location. For the purposes of this chapter, the following repair requirements are hereby added as a new Subsection 3405.2.4 to Section 3405 Repairs in the 2010 San Leandro Building Code. 3405.2.4 Seismic Evaluation and Design Procedures for Repairs. The seismic evaluation and design shall be based on the procedures specified in the California Building Code, ASCE 31 Seismic Evaluation of Existing Buildings (for evaluation only) or ASCE 41 Seismic Rehabilitation of Existing Buildings. The procedures contained in Appendix A of the International Existing Building Code shall be permitted to be used as specified in Section 3405.5.1.1.3. 3405.2.4.1 Compliance with CBC level seismic forces. Where compliance with the seismic design provisions of the California Building Code is required, the procedures shall be in accordance with one of the following: 1. One-hundred percent of the values in the California Building Code. Where the existing seismic force - resisting system is a type that can be designated as "Ordinary," the values of R, n., and Cd used for analysis in accordance with Chapter 16 of the California Building Code shall be those specified for structural systems classified as "Ordinary" in accordance with Table 12.2 -1 ORDINANCE NO. 2010 -013 29