EZ
Virtual Tools | Construction
Hub
Petroleum
All Calculators
CBR
Value
Calculator
Calculate California Bearing Ratio and estimate subgrade modulus for pavement design
Input Parameters
Penetration Load at 0.1" (psi)
Soil Type
Gravel (GW/GP)
Sand (SW/SP)
Silt (ML)
Clay (CL/CH)
Calculate
Results
--
CBR Value
%
--
Resilient Modulus
psi
--
Subgrade Modulus k
pci
--
Subgrade Rating
Reference
CBR = (Test Load / Standard Load) × 100 Mr ≈ 1500 × CBR (AASHTO correlation) k ≈ CBR × 10 (approximate)