To Offset or Project the Roof Line of a Wall

Use this procedure to change the height or the shape of the roof line of a wall:

• Offset the roof line from the current height of the wall.
• Project the roof line of the wall to a polyline.
• Project the roof line of the wall to another object, such as a roof or stairs.

You can also create a polyline that represents the current roof line of the selected walls. You can then use this polyline to change the roof line of other walls.

Note: To project the roof line to a polyline, draw the polyline first in elevation view. For best results, the polyline should be parallel to the wall. The polyline does not need to be in the same plane as the wall.

1. Select a wall,
2. Click Wall tabModify panelRoof/Floor Line drop-downModify Roof Line.
3. Change the roof line of the wall:

   If you want to …	Then …
   offset the roof line from the current height of the wall	enter o (Offset), and enter an offset distance. Enter a negative value to project the roof line below the current wall height.
   project the roof line to a polyline	enter p (Project), and select the polyline.
   project the roof line to another object, such as a roof or stairs	enter a (Auto-project), and select the object to project to. When projecting to stairs, make sure that the bottom riser or the stringer does not create a zero-height segment of wall.
   generate a polyline of the current roof line	enter g (Generate), and select the walls for the polyline to be created from.
   remove any changes to the roof line	enter r (Reset), and select the walls to change.

4. Press Enter.