Grading Object Prioritization
Another consideration is the order of priority in which objects constrain surface optimization. The following zone categories are listed in order from the top priority to the lowest priority.
- Exclusion Zone
- Zone
- Grading Limit
In the Grading Objects Browser, zones have optimization priority as they are listed under their categories from the top down. Each zone in a category is then considered from the top of the list to the bottom. Zones and Grading Limits can be reordered in the Grading Object Browser.
All other grading objects are considered equal and collectively have a greater priority than Exclusion Zones. These include:
- Building Pad
- Reveal
- Pond
- Retaining Wall
- Curb
- Aligned Edge
- Bend Line
- Drain Line
- Low Point
- Bounded Point
- Offset Points
If complex grading objects (Ponds, Building Pads, Curbs, and Retaining Walls) overlap a zone, its constraints and objectives will overwrite those of the zone. The Curb object is an exception in that it will inherit the slope of the zone.
In some cases, complex grading objects can present unsolvable optimization problems if placed incorrectly.
- Complex objects should not overlap an Exclusion Zone.
- Complex objects should never overlap a grading limit boundary; they should be completely inside or outside of the Grading Limit.
- Complex objects should never overlap another complex object.