The interpretation commands have two main purposes:
The standard Civil 3D tools for editing profiles are not conducive to drawing strata, the commands are time-consuming and cumbersome. The interpretation functionality has been added to aid the process of drawing geotechnical cross sections and help produce 3D models of the strata surfaces.
Interpretation functionality is built upon standard Civil 3D surfaces and Profile Views, the user can quickly sketch and edit a strata profile and the corresponding civil 3D surface will be updated to reflect the profile.