Raising or Lowering a Roof Plane

Reference Number: KB-00634
Last Modified: February 7, 2019

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors


I would like to change the height of one of the roof planes in my model. How do I accomplish this? 


Roof planes generate on the wall top plates, which are governed by the ceiling height specified in a given room or floor. There are several ways to change the height of a roof plane. You can, for example, specify a new baseline height in the roof plane's specification dialog or select and move the baseline in a 3D view. However, the easiest way to change a roof plane's height, while easily maintaining its pitch, is by raising or lowering it a specific amount using the Transform/Replicate Object edit tool.

To raise or lower a roof plane

  1. Click the Select Objects tool, then click once on a roof plane near one of its edges to select it.

  2. Click the Transform/Replicate Object edit button.

  3. In the Transform/Replicate Object dialog:

    Moving a roof plane using the Transform / Replicate Object dialog

    • Check the box beside Move, which will enable the selections directly beneath it.

    • To the right, select the Relative To Itself radio button so that the roof plane moves relative to its current location.

    • Specify how high you want to raise the roof plane, or how low you want to lower it, in inches or millimeters.To move the roof plane up, enter a positive number in the Z Delta field. To move the roof plane down, enter a negative number in the Z Delta field.

      In this example, we are raising the roof plane by 12".

  4. Click the OK button to close the dialog and confirm the changes.

  5. Create a Camera  view to confirm that the roof plane is in the desired location.