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St. Barbara Catholic School <br />Project No.: D-6289-01 <br />by ASTM Test Designation D-1557. Aggregate base should be in <br />Caltrans Class 2 base rock (minimum R-value=78) and sample shou <br />testing and approval prior to delivery to the site. <br />Asphalt Concrete Paving <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />may, lS. <br />Approved <br />FOR PERMIT ISSUANCE <br />with the <br />V69ght for <br />Date: <br />Asphalt concrete pavement should be Performance Grade PG 64-10, 1/2" maximum <br />aggregate size and should be placed and compacted in two layers. Asphalt concrete shall <br />be compacted to 95 percent of the Hveem laboratory test. <br />New Playground Concrete Pavement <br />Portland cement concrete playground in non -vehicle areas should be 4 inches of concrete <br />over 4 inches of aggregate base. The top 12 inches of subgrade should be scarified and <br />compacted prior to placing concrete or asphalt concrete, subject to inspection. Expansion <br />joints should be provided 6 feet or less. <br />Walkways <br />Portland cement concrete walkways and/or asphalt concrete walkways at non -vehicle <br />areas should be 4 inches of concrete over 4 inches of aggregate base with 43 bars at 18" <br />o.c. both ways or 3 inches of asphalt concrete over 4 inches of aggregate base. Subgrade <br />of these areas to be treated as mentioned in Pavement Grading Recommendation section. <br />Exterior Concrete Flatwork (Non -vehicular use) <br />In order to reduce the potential for unsightly cracking, concrete sidewalks, patio -type <br />slabs, and concrete sub -slabs to be covered with decorative pavers should be at least 4 <br />inches thick and provided with construction joints or expansion joints every 6 feet or less. <br />Subgrade of these areas to be treated as mentioned in subgrade section. <br />Exterior Concrete (Vehicular Use) <br />Exterior concrete vehicular lanes including driveway slabs, curbs and gutters are subject <br />23 <br />