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3A Public Hearing 2007 1105
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3A Public Hearing 2007 1105
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1/15/2008 12:46:27 PM
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11/2/2007 2:54:52 PM
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CM City Clerk-City Council
CM City Clerk-City Council - Document Type
Staff Report
Document Date (6)
5/11/2007
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_CC Agenda 2007 1105
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\City Clerk\City Council\Agenda Packets\2007\Packet 2007 1105
8D Consent 2007 1001
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\City Clerk\City Council\Agenda Packets\2007\Packet 2007 1001
Ord 2007-022
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\City Clerk\City Council\Ordinances\2007
Ord 2007-023
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\City Clerk\City Council\Ordinances\2007
Ord 2007-024
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\City Clerk\City Council\Ordinances\2007
Ord 2007-025
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\City Clerk\City Council\Ordinances\2007
Ord 2007-026
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\City Clerk\City Council\Ordinances\2007
Ord 2007-027
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\City Clerk\City Council\Ordinances\2007
Ord 2007-028
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\City Clerk\City Council\Ordinances\2007
Ord 2007-029
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\City Clerk\City Council\Ordinances\2007
Ord 2007-030
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\City Clerk\City Council\Ordinances\2007
Ord 2007-031
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\City Clerk\City Council\Ordinances\2007
Ord 2007-032
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\City Clerk\City Council\Ordinances\2007
Ord 2007-033
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\City Clerk\City Council\Ordinances\2007
Ord 2007-034
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\City Clerk\City Council\Ordinances\2007
Ord 2007-035
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\City Clerk\City Council\Ordinances\2007
Ord 2007-036
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\City Clerk\City Council\Ordinances\2007
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TABLE 2308.12.4 <br />WALL BRACING IN SEISMIC DESIGN CATEGORIES D AND E <br />(Minimum Length of Wall Bracing per each 25 Linear Feet of Braced Wall Linea) <br />CONDITION SHEATHING Sns < 0.50 0.50 < SDS < 0.75 0.75 < SDS <1.00 SDS > 1.00 <br /> TYPE - <br /> 5 feet 8 feet 9 feet 12 feet <br />One Story S-W 4 inches 0 inches 4 inches 0 inches <br />For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. <br />a. Minimum length of panel bracing of one face of the wall for S-W sheathing; h/w ratio shall <br />not exceed 2:1. For S-W panel bracing of the same material on two faces of the wall, the <br />minimum length is permitted to be one-half the tabulated value but the h/w ratio shall not <br />exceed 2:1 and design for uplift is required. <br />b. S-W =wood structural panels and diagonal wood sheathing. <br />c. Nailing as specified below shall occur at all panel edges at studs, at top and bottom plates <br />and, where occurring, at blocking. <br />Section 7-5-195: SUSTANTIAL STRUCTiJRAL DAMAGE. Section 3402.1 of the Code <br />is amended as follows: <br />For the purposes of this chapter, the following definition applies and is hereby added to Section <br />220-S of the San Leandro Building Code: <br />Substantial Structural Damage. A condition where: <br />In any story, the vertical elements of the lateral-force-resisting system, have <br />suffered damage such that the lateral load-carrying capacity of the structure in <br />any direction has been reduced by more than 20 percent from its pre-damaged <br />condition, or <br />2. The capacity of any vertical gravity load-carrying component, or any group of <br />such components, that supports more than 30 percent of the total area of the <br />structure's floor(s) and roof(s) has been reduced more than 20 percent from its <br />pre-damaged condition, and the remaining capacity of such affected elements <br />with respect to all dead and live loads is less than 75 percent of that required <br />by the building code for new buildings of similar structure, purpose, and <br />location. <br />Damage maybe caused by events or a combination of events, including, but <br />not limited to, fire, explosion, structural pest orwood-destroying organism <br />attack, earthquake, wind storm, vehicular impact, ground subsidence or <br />failure, or the collapse or dislodgement of any portion of any adjacent <br />building or structure. The removal or alteration of structural elements as part <br />of the work described in an approved building permit application shall not be <br />considered to be "damage." <br />ORDINANCE NO. 2007-022 25 <br />
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