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~ z c, <br />CI <br />APPENDIX A <br />DESIGN CALCULATIONS <br />Structural Number Verification <br />(AASHTO Design of Pavement Structure - 1986) <br />Traffic: Design 18 kip ESAL: 6,500 <br /> <br />Reliability: 50 percent <br />Overall Deviation 0•~ <br />Soils: Resilient Modulus 5000 psi <br />PSI Loss Due To Traffic: 2.0 <br />Required Structural Ntunber = 1.36 <br />Required Gravel Section <br />Minimum Structural Number(MSN) required = 1.36 <br />Gravel Section Required, using 4 inches of 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 /> <br />j~ol(o <br />