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This video shows some practical examples of how to use Collision Detection in ARCHICAD. This functionality is now part of the ARCHICAD software package, so there is no need to install any add-on or extension. To help architects fulfil their role as lead coordinator, ARCHICAD’s Collision Detection allows two groups of elements to be compared through user-defined criteria sets. These criteria sets can include Element Types, Classification values, Property values and Attributes, such as Layer names or Building Materials.