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_ �JL <br />Pavement Management Loading Study <br />City of Santa Ana, California <br />Management's input, we assumed the recycling, refuse, and green waste trucks have the <br />tag axle in the up position at all times when on residential streets only. <br />The axle weights for school buses and sweepers were estimated based on best available <br />data. Actual axle weights are necessary to calculate the actual vehicle loading factors. <br />ANALYSIS <br />Pavement Loadings <br />Loading impacts were calculated for ten scenarios — five street classes and two pavement <br />types, as listed below: <br />Asphaltic Concrete Pavements <br />• Major arterial <br />• Primary arterial <br />• Secondary/ collector arterial <br />• Local residential <br />• Local nonresidential <br />Street Classification Breakdown <br />PC Concrete Pavements <br />• Major arterial <br />• Primary arterial <br />• Secondary/ collector arterial <br />• Local residential <br />• Local nonresident <br />The traffic volumes, truck classes and volumes, truck axle data, and typical pavement <br />sections were assembled as described in the previous Data and Sources section of this <br />technical memo. The loading impact calculations involved two steps. First the Vehicle Load <br />Factors were calculated from the AASHTO 1993 Pavement Design Guide tables. Then the <br />total truck ESALs and the selected truck ESALs were calculated. <br />AECOM Project No. 60477125 <br />• <br />Lm <br />June 21, 2016 <br />Page 5 of 11 <br />Asphalt Pavement <br />Concrete Pavement. <br />Street <br />Structural <br />Concrete <br />Typical Section <br />Classification <br />Square Feet <br />Square Feet <br />Number <br />Thickness <br />Six -lane divided <br />Major Arterial <br />704 <br />23,155,436 <br />6- Inches <br />166,733 <br />roadway <br />Four -lane divided <br />Primary Arterial <br />5.28 <br />2,746,741 <br />6- Inches <br />46,345 <br />roadway <br />Four -lane <br />Secondary <br />undivided <br />4.40 <br />9,440,032 <br />6- Inches <br />155,242 <br />Arterial <br />roadway <br />Two -lane <br />Collector <br />undivided <br />4.40 <br />649,890 <br />6- Inches <br />28,608 <br />roadway <br />Two -lane <br />Local <br />undivided <br />2.64 <br />47,706,767 <br />5- Inches <br />4,751,642 <br />Residential <br />roadway <br />Two -lane <br />Local Non- <br />undivided <br />3.52 <br />6,803,796 <br />5- Inches <br />51,965 <br />Residential <br />roadway <br />The traffic volumes, truck classes and volumes, truck axle data, and typical pavement <br />sections were assembled as described in the previous Data and Sources section of this <br />technical memo. The loading impact calculations involved two steps. First the Vehicle Load <br />Factors were calculated from the AASHTO 1993 Pavement Design Guide tables. Then the <br />total truck ESALs and the selected truck ESALs were calculated. <br />AECOM Project No. 60477125 <br />• <br />Lm <br />June 21, 2016 <br />Page 5 of 11 <br />