Pavement Design
AASHTO Flexible Pavement Design
Calculate the required Structural Number (SN) and layer thicknesses for flexible pavements using the AASHTO 1993 design equation.
AASHTO Flexible Pavement Design
Calculate the required Structural Number (SN) and layer thicknesses for flexible pavements using the AASHTO 1993 design equation.
Inputs
1. Pavement Design Parameters
2. Structural Layer Coefficients
Results
Enter design parameters above, or click a Demo Preset at the top to compute the required structural number.
Theory and formulae
AASHTO 1993 Equations
About this calculator
This free flexible pavement design calculator runs entirely in your browser: what you enter is never uploaded. Use the calculation steps and the theory section to check the working, and print a calculation sheet with the inputs, results and formulae for your records.
Methods and references: AASHTO 1993.
Topics: pavement, aashto 1993, structural number, sn, esal, resilient modulus, layer thickness, asphalt.
Engineering notice: Results are for preliminary estimation, screening and education. All inputs and outputs must be independently verified by a qualified professional engineer before use in any design or construction decision. Read the full disclaimer
Disclaimer
This calculation sheet was generated with Geotechnical Toolbox for preliminary estimation, screening, educational and verification purposes only. Geotechnical engineering involves site-specific ground conditions and uncertainty. All inputs, methods, results and figures must be independently checked and approved by a qualified Professional Engineer (P.Eng. / PE) before being relied on for design, construction or any safety-critical decision. Results reflect the values entered at the time of printing. The author and site accept no liability for errors, omissions or damages arising from their use.
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