Autodesk 24108-051400-9000 - AutoCAD Revit Architecture Suite 2008 User Manual page 1630

For information on how to set an object or style as bounding see
and Setting an Object Instance as
Setting an Object Style as Bounding
Use this procedure to define in an object style that objects of that style can bound associative spaces.
When an object style is set as bounding, by default all objects that have the style assigned will be used in the selection
set for an associative space.
You can override the bounding settings from the object style in the object settings, if necessary.
NOTE Some bounding objects can be used only to generate 3D freeform spaces. For example, if you set the bounding setting
of a slab style to "yes" that setting will only be applied if the slab is used in the selection set for a 3D freeform space. If you
try to generate an extruded 3D space, the slab will not be used as a bounding object, regardless of the setting in the style.
1 Click Format menu
2 Expand Architectural Objects.
3 Expand the desired object category, and select the style you want to set as bounding.
4 Click the General tab.
5 Select the checkbox for This style may act as a boundary for automatic spaces.
6 Click OK.
7 If walls of a bounding style are intersecting with other walls that are non-bounding, create a different
cleanup group for the non-bounding walls. If bounding and non-bounding walls are in the same cleanup
group, they are considered non-bounding, regardless of their actual setting.
Setting an Object Instance as Bounding
Use this procedure to define an object instance as bounding.
In the object style, you specify whether you want to allow objects of that style to be able to bound associative spaces.
You can override that setting in the object properties of an individual object.
NOTE The bounding setting is only respected if the object is a valid bounding object for the type of space you are generating.
1 Select the object for which you want to set the bounding behavior, and double-click.
2 In the Properties palette, expand General.
3 For Bound Spaces, select one of the following options:
By Style: This option uses the bounding behavior defined in the object style. This is the default setting.
Yes: If this object is included in the selection set for an associative space, it will bound the space.
No: If this object is included in the selection set for an associative space, it will not bound the space.
1590 | Chapter 36 Spaces
Bounding" on page 1590.
Style Manager.
Setting an Object Style as Bounding" on page 1590