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Mater Dei High School October 20, 2023 <br />Proposed Dance Studio, Santa Ana, California Project No. 3204.I <br /> <br />3204-I-01R (10/23) 15 <br /> <br />PAVEMENT SECTIONS <br /> <br />PAVEMENT AREA ASSUMED <br /> <br />SECTION THICKNESS (inches) <br /> <br /> <br />Auto Parking <br />Circulation Drives (no trucks) <br /> <br />4 <br />5 <br />Asphalt <br />Concrete <br />3 <br />3 <br />Aggregate <br />Base Course <br />6 <br />9 <br /> <br />Auto Parking <br />Circulation Drives (no trucks) <br /> <br />4 <br />5 <br />Portland Cement <br />Concrete <br />6.5 <br />6.5 <br />Aggregate <br />Base Course <br />---- <br />---- <br />---- <br /> <br />The pavement subgrade underlying the aggregate base should be properly prepared and <br />compacted in accordance with the recommendations outlined under "Subgrade <br />Preparation”. <br /> <br />The portland cement concrete used for paving should have an approximate compressive <br />strength of 3,500 psi at the time the pavement is subject to truck traffic. <br /> <br />The pavement base course should be compacted to at least 95 percent of the maximum <br />dry density (ASTM D 1557). Aggregate base should conform to the requirements of <br />Section 26 of the California Department of Transportation Standard Specifications for <br />Class II aggregate base (three-quarter-inch maximum) or Section 200-2 of the Standard <br />Specifications for Public Works Construction (Green Book) for untreated base materials <br />(except Processed Miscellaneous Base). <br /> <br />The above recommendations are based on the assumption that the base course will be <br />properly drained. The design of paved areas should incorporate measures to prevent <br />moisture build-up within the base course and subgrade, which can otherwise lead to <br />premature pavement failure. For example, curbing adjacent to landscaped areas should <br />be deep enough to act as a barrier to infiltration of irrigation water into the adjacent base <br />course. <br /> <br />4.11 GEOTECHNICAL OBSERVATION AND TESTING <br /> <br />We recommend that a representative of GPI observe earthwork during construction to <br />confirm that the recommendations provided in our report are applicable during <br />construction. The earthwork activities include grading, compaction of fills, subgrade <br />preparation, pavement construction and foundation excavations. If conditions are <br />different than expected, we should be afforded the opportunity to provide an alternate <br />recommendation based on the actual conditions encountered. <br /> <br />1202 W Edinger <br />Ave10/3/2024