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File Number: 16-629 <br />to be designed and constructed in accordance with this section. Prescriptive design of <br />foundation walls shall not be used for structures assigned to Seismic Design Category D, E or <br />F. <br />SECTION 7-5-185: MODIFICATIONS TO ACI 318 <br />Section 1905.1 is amended to read as shown below and Sections 1905.1.9 through <br />1905.1.11 is added to Chapter 19 of the 2016 Edition of the California Building Code: <br />The last paragraph of Section 1905.1.2 of the 2016 Edition of the California Building Code <br />is amended to read as follows: <br />All special moment frames and special structural walls shall also satisfy 18.2.4 through 18.2.8. <br />Concrete tilt-up wall panels classified as intermediate precast structural wall system shall <br />satisfy 18.10.1 in addition to 18.5.2.1 and 18.5.2.2 for structures assigned to Seismic Design <br />Category D, E or F. <br />1905.1.7 ACI 318, section 14.1.4 Delete ACI 318, section 14.1.4 and replace with the <br />following: <br />14.1.4 - Plain concrete in structures assigned to Seismic Design Category C, D, E or F. <br />14.1.4.1 - Structures assigned to Seismic Design Category C, D, E or F shall not have <br />elements of structural plain concrete, except as follows: <br />(a) Isolated footing of plain concrete supporting pedestals or columns are permitted, <br />provided the projection of the footing beyond the face of the supported member does <br />not exceed the footing thickness. <br />Exception: In detached one-and two-family dwellings three stories or less in height, <br />the projection of the footing beyond the face of the supported member is permitted to exceed <br />the following thickness. <br />(b) Plain concrete footing supporting walls are permitted, provided the footings have at <br />least two continuous longitudinal reinforcing bars. Bars shall not be smaller than No.4 <br />and shall have a total area of not less than 0.002 times the gross cross-sectional area <br />of the footing. A minimum of one bar shall be provided at the top and bottom of the <br />footing. Continuity of reinforcement shall be provided at corners and intersections. <br />Sections 1905.1.9 through 1905.1.11 are added as follows: <br />1905.1.9 ACI 318, Section 18.7.5. Modify ACI 318, Section 18.7.5, by adding Section <br />18.7.5.8 and 18.7.5.9 as follows: <br />18.7.5.8 Where the calculated point of contra-flexure is not within the middle half of the <br />member clear height, provide transverse reinforcement as specified in ACI 318 Sections <br />18.7.5.1, Items (a) through (c), over the full height of the member. <br />18.7.5.9 At any section where the design strength, jPn, of the column is less than the sum of <br />Page 10 City of San Leandro Printed on 11/15/2016