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St. Barbara Catholic School <br />Project No.: D-6289-01 <br />collected, the assumed TI values, and the guidelines presented in the 1 <br />California Department of Transportation "Highway Design Manual," <br />Typical categories of paved areas with corresponding traffic indices are <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />Approved <br />FOR PERMIT ISSUANCE <br />t revision to the <br />E` MbH): <br />Date: <br />ted as follows: <br />T.I. = 5.0 for Parking Stalls <br />T.I. = 6.0 for Driveways, Trucks & Fire Lanes <br />The recommended pavement sections provided below are intended as a minimum <br />guideline. If thinner or highly variable pavement sections are constructed, increased <br />maintenance and repair could be expected. If the ADT (average daily traffic) or ADTT <br />(average daily truck traffic) increases beyond that intended, as reflected by the TI used <br />for design, increased maintenance and repair could be required for the pavement sections. <br />Consideration should be given to the increased potential for distress from overuse of <br />paved street areas by heavy equipment and/or construction related traffic (e.g., concrete <br />trucks, loaded supply trucks, etc.), particularly when the final section is not in place <br />(i.e., topcoat). Best management construction practices should be followed at all times, <br />especially during inclement weather. <br />Based on an "R" Value of 30, the following thickness of aggregate base was determined <br />for parking and driveway areas. <br />Asphalt Concrete Pavement Design: <br />Subject to the review of the subgrade "R" value test and the proposed grading, <br />recommended pavement sections for the parking areas are as follows: <br />Assumed A.0 A.B. <br />Traffic Condition Traffic Index in in <br />Parking Stalls 5.0 4 4 <br />Driveways 6.0 4 6 <br />