CBR ↔ Resilient Modulus


Enter either value and the other updates automatically. Conversion uses the MEPDG / AASHTOWare Pavement ME relationship; see details.

K-Value Calculator


Add support layers above the subgrade, as needed. Composite calculations are per a calibrated Palmer-Barber equivalence method; see details.

Subbase(s)
Subgrade
Resilient Modulus (psi)Poisson's Ratio