# Split core and perimeter

<img src="/files/otJkDpI4E0Vnt8nXFpGa" alt="" height="50" width="50">

Create core and perimeter rooms for a selected room. This is particularly useful for creating models according to typical zoning practices, where each façade orientation is a separate zone.

## Options

* **Offset Distance**

  The distance that the perimeter of the rooms will be offset
* **Air Boundary**

  Select to have the new separation walls between the core and perimeter rooms set to Air Boundary


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