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Chapter 50. Clash Rules
In this section you will learn how to define and customize ignore rules to be applied to a clash test.
Using Default Clash Rules
To use default clash rules:
1. If the Clash Detective window is not already open, select Tools > Clash Detective from the menu
bar.
2. Click the Batch tab, and select the test you want to configure.
3. Click the Rules tab.
The Ignore Clashes Between box enables you to select "rules" that reduce the number of clash
results by ignoring certain combinations of clashing items. The following rules are built-in:
• If Items in same layer is checked, any items found clashing that are in the same layer are not
reported in the results.
• If Items in same group/block/cell is checked, any items found clashing that are in the same
group (or inserted block) are not reported in the results.
• If Items in same file is checked, any items found clashing that are in the same file (either
externally referenced or appended) are not reported in the results.
• If Items in same composite object is checked, any items found clashing that are part of the
same composite object (an item composed of multiple parts of geometry) are not reported in the
results.
• If Items in previously found pair of composite objects is checked, any items found clashing
that are part of composite objects (items composed of multiple parts of geometry) that have
previously been reported in the test are not reported in the results.
• If Items with coincident snap points is checked, any items found clashing that have snap points
that coincide are not reported in the results. This can be particularly useful for pipe runs made
from cylinders.
• If Items in the same AutoPlant Component is checked, any items found clashing that are
contained within the same AutoPlant component are not reported in the results.
• If Connected AutoPlant Components is checked, any items found clashing that are in
connected AutoPlant components are not reported in the results.
4. Select the check boxes for all exception rules that you want to apply to the selected test.
Adding Custom Clash Rules
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