Creating Roofs from Mass Faces

Using the Roof by Face tool, you can create roofs on any non-vertical faces of a mass. You cannot select faces from different masses for the same roof.

Note: Roofs created using the Roof by Face tool do not automatically update if you change the mass face.

To create a roof from mass faces

1. Open a view that displays the mass.
2. Click Massing & Site tabModel by Face panel (Roof by Face).
3. In the Type Selector, select a roof type.
4. (Optional) On the Options Bar, specify the level of the roof.
5. (Optional) To create the roof from a single mass face, click Modify | Place Roof by Face tabMultiple Selection panel (Select Multiple) to disable it. (It is enabled by default.)
6. Move the cursor to highlight a face.
7. Click to select the face.

   If the Select Multiple option is cleared, a roof is placed on the face immediately.

   Tip: You can change the pick face location of the roof (either top or bottom) by modifying the roof’s Picked Faces Location property in the Properties palette.
8. If Select Multiple is enabled, select more mass faces.

   How to

   1. Click an unselected face to add it to the selection. Click a selected face to remove it.

      The cursor indicates whether you are adding (+) or removing (–) a face.

   2. To clear the selection and start over, click Modify | Place Roof by Face tabMultiple Selection panel (Clear Selection).
   3. When the desired faces are selected, click Modify | Place Roof by Face tabMultiple Selection panelCreate Roof.

   Tips

   • Do not select upward-pointing and downward-pointing faces for the same roof.
   • To make roof panels that cover both upward and downward faces, split the mass into 2 faces, so that each face is either completely upward or downward. Then create one or more roofs from the downward faces and one or more from the upward faces.
     

Examples

Cursor highlighting cylindrical face

Placed roof