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Ord89 2004
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Ord89 2004
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Last modified
10/11/2019 3:14:07 PM
Creation date
10/11/2019 3:14:04 PM
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Template:
CC Index
CC Index - Document Type
Ordinance
Date
12/4/1989
Description
ORDINANCE AMENDING SECTIONS 9.2, 9.40, 9.60, 9.70, 9.80, AND 9.110, AND ADDING DIVISION 4 TO ARTICLE IX OF CHAPTER 9 OF THE CODE OF THE CITY OF REDWOOD CITY RELATING TO THE AVAILABILITY OF CODES ADOPTED BY REFERENCE, ADOPTING BY REFERENCE THE UNIFORM BUILDING CODE, 1988 EDITION, THE UNIFORM BUILDING CODE STANDARDS, 1988 EDITION, THE UNIFORM BUILDING SECURITY CODE, 1988 EDITION, THE UNIFORM HOUSING CODE, 1988 EDITION, THE UNIFORM MECHANICAL CODE, 1988 EDITION, THE UNIFORM PLUMBING CODE, 1988 EDITION, AND THE NATIONAL ELECTRICAL CODE, 1987 EDITION, AND ESTABLISHING A SEISMIC HAZARD IDENTIFICATION PROGRAM, RESPECTIVELY THE COUNCIL OF REDWOOD CITY DOES ORDAIN AS FOLLOWS: SECTION 1. Section 9.2 of the Redwood City Code is hereby amended to read as follows: "Section 9.2. Copies of each publication adopted by
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<br />- DES:d-ik 11/07/89 (029/7) <br />DES:( 11/13/89R <br /> <br /> <br /> <br />"Appendix A <br /> <br />to <br /> <br />Division 4, Article IX, Chapter 9 <br />of the Code of the City of Redwood City, California <br /> <br /> <br />"For purposes of preparing engineering reports on URM <br /> <br />buildings for the City of Redwood City, the following engineering <br /> <br />standards shall apply. <br /> <br />(a) Minimum Earthquake Forces for Structures. <br /> <br />(1) General. Except as provided in (a) (2) every structure <br />shall be designed and constructed to resist minimum <br />total lateral seismic forces assumed to act <br />nonconcurrently in the direction of each of the main <br />axes of the structure in accordance with the following <br />formula: V = ZIKCSW. The value of ZIKCS need not <br />exceed the values set forth in Table A-I based on the <br />applicable rating classification of buildings. <br /> <br />(2) Lateral Forces on Elements of Structures. Parts or <br />portions of structures shall be analyzed and designed <br />for lateral loads in accordance with subsection 2312(e) <br />of the 1985 Uniform Building Code, 1985 Edition, but <br />not less than the value from the following formula: <br />Fp = ZISCpWp. The values shown on Table A-I and the <br />value of Cp need not exceed the values as set forth in <br />Table A-2. <br /> <br />(b) Testing. Testing of URM walls utilized to carry <br />vertical loads and seismic forces shall be performed as follows: <br /> <br />(1) Mortar joints may be raked, cleaned and pointed with <br />Type S or N mortar (no masonry cements) prior to <br />testing, under the continuous observation of a deputy <br />building inspector or special inspector as defined in <br />the UBC. <br /> <br />(2) Tests may consist of in-place shear tests or core <br />tests. The minimum number of tests shall be two (2) <br />per wall or line of wall elements resisting a common <br />force, or one (1) per fifteen hundred (1500) square <br />feet of wall surface, with a minimum of eight (8) total <br />tests. Exact test or core locations shall be field- <br />determined by the civil or structural engineer <br />responsible for the engineering report. <br /> <br />(3) For each in-place shear test, the bed joints of the <br />outer wythe of the masonry shall be tested in shear by <br /> <br />15 <br /> <br />2004 <br /> <br /> <br />___ _ ~""""""",~,,,,,.,,,,_,.,,,,~_,,_,_....~.....__,,,,,,,_"".,, _"..._ '_--oA"'__~'__"~"_,___"__,,. <br />
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