The relationship between the static deflection modulus Ev2, measured by the static plate bearing test, and the dynamic deflection modulus Evd depends on the kind of soil and the degree of compaction.

Experience shows that the ratio Ev2/Evd lies in the range 1.0 to 4.

For densely compacted soils Ev2/Evd ~ 2.3

On average the following relation between the dynamic deflection modulus Evd, and the static deflection modulus Ev2, can be used:

This relation does not hold for limiting values.