Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD, User Manual

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as a body modifier. You can also restore the body modifier to a mass element while leaving the body modifier still
applied to the wall. This is useful if you want to create other walls with the same shape.
If the object used to create the body modifier was a conventional mass element, it is restored to that mass element. For
example, a Gable mass element is restored as a Gable mass element. However, if the body modifier was created from
another object, such as a slab, or was edited using Boolean operations or face editing commands, the body modifier is
restored as a Free Form mass element.
1 Select the walls you want to change, right-click, and click Body Modifiers
➤
Restore.
2 NOTE This procedure restores all body modifiers attached to a wall.
Create mass elements from the body modifiers:
Then … If you want to …
press ENTER. create mass elements from the body modifiers while keeping
the body modifiers attached to the wall
enter y (Yes), and press ENTER. remove all body modifiers from the wall, and create mass
elements from their shapes
Working with Interference Conditions
Interference conditions use the geometry of 3-dimensional (3D) objects to create custom openings or cutouts in walls.
You can specify how the interference condition is applied to the shrinkwrapping of a wall: added to the wall, subtracted
to the wall, or ignored.
How Interference Conditions Affect the Display of Walls
Unlike wall modifiers and body modifiers, which apply to a selected wall component, interference conditions apply
to all wall components that the interfering object touches. The wall stops at the interference condition. The way in
which you apply the interference condition to the wall determines how the shrinkwrapping of the wall is affected by
the condition in plan view:
■
Add the interference condition to include the condition in the shrinkwrapping.
■
Subtract the interference condition to exclude the object from the shrinkwrapping.
■
Ignore the interference condition to draw the shrinkwrapping as if the object were not there. You also use the
ignore option to add interference conditions applied to one wall to subsequent walls.
In model views, the interference condition is always subtractive, regardless of the shrinkwrapping option you selected.
720 | Chapter 18 Walls