3B Public Hearing 2010 1115 - Laserfiche WebLink

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21.9.4.6 — Walls and portions of walls with P. > 0.35P shall not be considered to contribute to the calculated strength of the structure for resisting earthquake- induced forces. Such walls shall conform to the requirements of ACI 318 Section 21.13. 1908.1.14 ACI 318, Section 21.11.6. Modify ACI 318, Section 21.11.6, by adding the following: Collector and boundary elements in topping slabs placed over precast floor and roof elements shall not be less than 3 inches (76 mm) or 6 db thick, where db is the diameter of the largest reinforcement in the topping slab. Section 7 -5 -190 CONVENTIONAL LIGHT -FRAME CONSTRUCTION Section 2301.2, method 3 of California Building Code, 2010 edition is revised as follows: Delete Exception. Section 4.3.4 of SDPWS 2008 Edition is amended as follows: Delete rows 5 & 6 and footnote 2 of Table 4.3.4 Section 2306.7 of the California Building Code, 2010 is amended as follows: 2306.7 Shear walls sheathed with other materials. Shear walls sheathed with Portland cement plaster, gypsum lath, gypsum sheathing or gypsum board shall be designed and constructed in accordance with AF &PA SDPWS. Shear walls sheathed with these materials are permitted to resist horizontal forces using the allowable shear capacities set forth in Table 2306.7. Shear walls sheathed with Portland cement plaster, gypsum lath, gypsum sheathing or gypsum board shall not be used to resist seismic forces in structures assigned to Seismic design Category D, E or F. Item 1, expanded metal or woven wire lath and Portland cement plaster on studs spaced at 16 inches (406 mm) on center installed per Table 2306.7 is permitted for use in one story structures of R -3 and U occupancies. Section 2308.1 of the California Building Code, 2010 Edition is amended as follows: Section 2308.1 General. The requirements of this section are intended for conventional light -frame construction. Other methods are permitted to be used, provided a satisfactory design is submitted showing compliance with other provisions of this code. Interior nonload - bearing partitions, ceilings and curtain walls of conventional light -frame construction are not subject to the limitations of this section. Section 2308.3.4 of the California Building Code, 2010 Edition is amended as follows: ORDINANCE NO. 2010-013 27