The depth of DG is normally between 0.1 and 0.25 in. The increase in wheel load stress due to the reduced slab thickness by DG can be more than compensated by the reduction in dynamic loading. Also, the effect of reduction in thickness for thicker slabs is not as much as that for thinner slabs. The department has been building thicker slabs in anticipation of increased wheel load applications. DG will have a negligible effect on structural capacity of rigid pavement.

Deeper diamond grinding will expose the coarse aggregate in the concrete pavement. Softer coarse aggregates that are exposed may polish and result in lower skid numbers.

The department developed special specifications for diamond grinding.