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"ARTICLE IX. SEISMIC REQUIREMENTS <br /> <br /> DIVISION 1. GENERALLY <br /> <br /> Sec. 9.149 PROVISIONS CUMULATIVE; ALTERNATE DESIGNS: The <br /> provisions of this Article shall be in addition to all other provisions of the Building <br /> Code insofar as the same relate to lot grading, soils design, foundation design, <br /> construction design, structural design, and other engineering design, with respect <br /> to the areas of the City referred to in Division 2 hereinbelow, respectively. Such <br /> provisions are not intended to prevent the use of any engineering design not <br /> referred to herein provided any such alternate has been approved by the Building <br /> Official. The Building Official may approve any such alternate provided the <br /> Building Official finds after review of comprehensive design data submitted by the <br /> applicant, that the design is for the purpose intended, at least the equivalent in <br /> strength, safety, and effectiveness. <br /> <br /> DIVISION 2. AREAS OF REDWOOD CITY <br /> UNDERLAIN BY YOUNGER BAY MUD <br /> <br /> Sec. 9.150 APPLICABILITY OF PROVISIONS: The provisions of this Division <br /> shall be applicable to that portion of the City underlain by Younger Bay Mud as <br /> indicated on that map prepared by Building & Inspection of the City entitled "Area <br /> of Redwood City Underlain by Younger Bay Mud," and on file in the office of the <br /> Building Official. <br /> <br /> Sec. 9.151 FOUNDATION DESIGN CRITERIA FOR ONE AND TWO-STORY <br /> RESIDENCES: For one and two-story residential buildings or structures only, all <br /> lot grading, soils design, foundation design, and construction design shall be in <br /> accordance with the recommendations of the "Recommended Foundation Design <br /> Criteria for One and Two-Story Residences" prepared by Rutherford and <br /> Chekene, Consulting Structural Engineers, (dated April 15, 1974), as revised by <br /> the addendum dated April 12, 1999, and as adopted by the City Council, which <br /> document is on file in the office of the Building Official. <br /> <br /> Sec. 9.152 STRUCTURAL DESIGN: All structural design shall be in <br /> accordance with the Uniform Building Code, 1997 Edition, including lateral force <br /> provisions for wind and earthquake. <br /> <br /> Sec. 9.153 FOUNDATION SYSTEMS: Foundation systems shall consist of mat, <br /> grill, piles or a similar system with a demonstrated ability to resist differential <br /> settlement and for tying the foundation elements together. Foundation design <br /> shall be in accordance with the Uniform Building Code, 1997 edition. <br /> <br /> Sec. 9.154 CONCRETE TILT-UP WALL CONSTRUCTION: Such construction <br /> is permitted only if it meets the following criteria: <br /> <br />Atty/Ord/O rd. 167 <br />102402 25 <br /> <br /> 2 2Z~l <br /> <br /> <br />