Figure 9.4 illustrates the deflection/cumulative traffic relationship for bituminous roadbases as given in TRRL Laboratory Report 833.
(Note: standard deflection relates to the equivalent deflection beam deflection
at a temperature of 20°C. If the deflection measurement is made with a deflectograph it will be necessary to correct this value to a deflection equivalent to
that obtaining at a pavement temperature of 20°C (LR833))