Ezigrade 4.17

Ezigrade now automatically ignores any drains when doing grading solutions. In dryland situations with ponding. You can often reduce earth works by first designing surface drains to access any ponding areas. You can then do the grading and the existing drains are maintained and the grading will design to the edges of the drains. The drains are assumed to act as an edge when doing the "force water to the edge" type design. In the example below one of the designed structures is a "road". Here we can tell the grading to not use this as an edge to take the water.

We have also done some more work on the intersection of drains; as seen below.

More documentation coming soon.