TM 5-822-13/AFJMAN 32-1018
b. Poisson's ratio. Poisson's ratio is difficult to determine and has relatively minor influence on the design
compared to other parameters. Therefore, commonly recognized values of Poisson's ratio are used. These values
are as follows:
Pavement Material
Poisson's Ratio v
Portland cement concrete
0.15 ~ 0.20
Bituminous concrete
0.5 for E < 500,000 psi
0.3 for E > 500,000 psi
Unbound granular base or subbase course
0.3 ~ 0.35
Chemically stabilized base or subbase course
0.2
Subgrade
Cohesive subgrade
0.4
Cohesionless subgrade
0.3
4-6
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