Pavement Thickness Calculator
Design flexible pavement thickness using a simplified AASHTO 1993 method. Calculates required structural number and layer thicknesses for asphalt, base, and subbase.
Inputs
psi
Results
Required Structural Number
3.9
Asphalt Surface
4 in
Total Pavement Thickness
21 in
Aggregate Base10 in
Subbase7 in
How to Use This Calculator
- Enter design ESALs (log₁₀), desired reliability level, and serviceability loss.
- Set resilient modulus and other layer parameters.
- Review required pavement thickness (inches) per AASHTO 1993 design guide.
Ad Placeholder
Related Calculators
Traffic Signal Timing Calculator
Calculate signal green time, effective green, volume-to-capacity ratio, and average delay per vehicle for signalized intersections.
Superelevation Calculator
Calculate highway curve superelevation rate, bank angle, minimum curve radius, and maximum safe speed using AASHTO design formulas.
Earthwork Volume Calculator
Calculate earthwork cut or fill volume using the Average End Area method. Estimates truck loads and cost for excavation or fill operations.
Ad Placeholder