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<br />• <br /> <br />APPENDIX A <br />DESIGN CALCULATIONS <br />Structural Number Verification <br />(AASHTO Design aF Pavement Structure - 1986) <br />Traffic: Design 18 kip FSAL: <br />Reliability: <br />Overall Deviation: <br />Soils: Resilient Modulus <br />PSI Loss Due To Traffic: <br />Requred Structural Number = 1.36 <br />Required Gravel Section <br />Minimum Structural Number(MSN) required = 1.36 <br />Gravel Section Required, using 4 inches of new road base gravels = > <br />(1.36 - 4(0.14))/0.10 = 8.0 = > <br />Use 8 inches of pi[ run subbase gravels and 4 inches of road base gravels. <br />Grave! Section Required, with no road base gravels <br />1.36/0.10 = 13.6 = > Use 14 inches of pit run subbase gravels. <br />6,500 <br />~0 percent <br />0.40 <br />5000 psi <br />2.0 <br />~Raia <br />