Raising or Lowering a Roof Plane

The information in this article applies to:

QUESTION

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

ANSWER

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 using Transform/Replicate Object

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:
   
   
   
   
   • 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.

To raise or lower a roof plane using the Roof Plane Specification dialog

1. Click the Select Objects  tool, then click once on a roof plane near one of its edges to select it.
   
    
2. Click the Open Object  edit button.
   
   
   
3. In the Roof Plane Specification dialog:
   
   
   
   
   • Lock the Pitch to keep the angle of the roof plane the same.
     
     
   • Set the diagram to show for Rafters or Trusses, which will give you a reference point as to where changes will be based off of.
     
     
   • Specify the new height for either the Ridge Top Height, Baseline Height, or Fascia Top Height. You can also use addition and subtraction in the dialog by using the "+" or "-" signs.
     
     In this example we are raising the roof plane Baseline Height by 12" by adding "+12" in the field.
   
   
   
4. Click 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.