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  <br />Planning & Building Agency <br />Building and Safety Division <br />20 Civic Center Plaza <br />P.O. Box 1988 (M-19) <br />Santa Ana, CA 92702 <br />(714)-647-5800 <br />www.santa-ana.org <br />SOILS REPORT EXEMPTIONS <br />  <br />  <br />  <br />PCC‐06  <br />  <br />A. REFERENCES <br />2022 California Building Code (CBC), Section 1803 for Geotechnical Investigations <br /> <br />B. SOILS REPORT REQUIRED <br />Soils reports prepared by a California registered geotechnical engineer shall be provided in <br />accordance with code requirements in Chapter 18 of the current CBC. Two copies of the soils <br />report that are stamped and signed by the geotechnical engineer shall be provided at the time <br />of plan submittal. <br /> <br />Exemptions: A soils report will not be required for the following: <br />1. Accessory structures to an existing single family dwelling such as patio covers and <br />carports <br />2. Light standards where the height is 25 feet or less <br />3. Fences and blockwalls where the height is 10 feet or less <br />4. Retaining walls retaining 6 feet or less of level grade, not supporting surcharge <br />5. The following types of buildings complying with the “Minimum Foundation Construction <br />Requirements” in Section C below are met: <br />a. Detached one-story garage serving a single family dwelling <br />b. One-story and two-story attached additions to an existing single family dwelling <br />c. New detached one-story accessory dwelling units (ADU) with a maximum building <br />area of 750 sq. ft. <br />The building official reserves the right to require a soils report for any project where <br />questionable soil or slope instability conditions at the site warrant a foundation and soils <br />investigation. <br /> <br />C. MINIMUM FOUNDATION CONSTRUCTION REQUIREMENTS UNDER EXEMPTION #5 ABOVE <br />1. Depth of foundations below the natural grade shall not be less than 18 inches. <br />2. Continuous foundations shall be reinforced with at least four continuous #4 reinforcing <br />bars, two #4 bars at the top and two #4 bars at the bottom. <br />3. Slab construction shall be minimum 4” thick, reinforced with #4 bars at 18” on center <br />each way. <br />4. Doweling of the new foundations and slabs into the existing foundations and slabs shall <br />be required. Dowels shall be a minimum of 6” into the existing concrete and shall extend <br />a minimum of 24” into the new concrete. Dowels shall be minimum #3 bars at 18” on <br />center or #4 bars at 24” on center. <br /> <br />D. [NEW] ALTERNATE SOILS REPORT POLICY <br />ICC Orange Empire Chapter document “Foundation Requirements for Residential Projects <br />and Accessory Structures (Approved September 22, 2021)” which is attached, may be used <br />as alternate soils report policy when the document is complied with in its entirety. Code <br />references in this document shall be construed to apply to the corresponding provisions in the <br />current code. <br />Page 23 of 290