Materials Classification Method

In a rehabilitation design situation, the processing of available materials condition data (such as back calculated stiffness, CBR and grading) to determine the most appropriate materials class is often difficult and fraught with inconsistency. This applies especially to situations where various sources of information (often involving small sample sizes) have to be used to drive design decisions.

To assist designers in the process of interpreting materials test data, a consistent and rational manner has been developed. The method is easy to use but does require designers to properly process available test data before applying the materials classification method. Guidelines for doing this are provided on

As with the PN-based design method, we strongly recommend that you first read the information on this website before you start using the method.