LEVELLING

Levelling is performed after sizing to determine the invert levels on your system based upon the minimum cover value set in the parameters file and the pipe sizes established on your network.

Using the autogradients option on the sizing routine established the gradients and pipe sizes ready for the levelling routine.

If you want to use your own levels, from an existing network for example, the levels are input at the initial stage and the levelling routine is not necessary.