Autodesk 24108-051400-9000 - AutoCAD Revit Architecture Suite 2008 User Manual page 1632

7 For Offset boundaries, select how the 4 space boundaries (base, net, usable, and gross boundary) are offset
from each other:
Manual: The offsets of the net, usable, and gross boundaries from the base boundary can be manually
edited with grips. Each boundary has its own set of grips, except for the base boundary, which is
generated from the bounding objects.
By Style: The offsets of the net, usable, and gross boundaries from the base boundary are defined in
the space style. The boundaries have no grips. For more information, see
Offsets in a Space
By Standard: The offsets of the net, usable, and gross boundaries from the base boundary are defined
by the boundary offset calculation standard selected for the drawing. The boundaries have no grips.
For more information, see
8 For Create type, select Generate.
9 To add a calculation modifier to the space, click the setting for Calculation modifiers, and select one or
more calculation modifiers to add to the space.
For information about calculation modifiers, see
on page 1724.
10 Before selecting options under the Generate Space category, scroll down to the Component Dimensions
category, and for Geometry type, select Freeform.
The geometry type determines which other options are available for generating the space, so the geometry
type should be defined before proceeding with the remaining settings.
11 For Boundary set, specify how the bounding objects for the space should be selected:
If you want to
let the software detect spaces in the visible drawing area
select bounding objects manually in the drawing
When you generate a 3D freeform space, the following properties are predefined and read-only:
Filter boundary set: 3D freeform spaces can only be generated from bounding AEC objects. Regardless
of what selection is displayed here, the boundary set used is always AEC Objects. For a list of objects
included in that selection, see
If an AEC object has been defined as non-bounding in its style or its object properties, it will be filtered
out, regardless of whether it is included in the boundary set. For more information, see
Object Style as
IMPORTANT If your selection set includes walls with different bounding conditions, make sure to put the
walls in different cleanup groups. If a non-bounding wall intersects with a bounding wall, and they are in
the same cleanup group, the cleanup with the non-bounding wall will create a hole in the bounding wall
through which the space leaks. As a result, no spaces can be generated even if the geometry would otherwise
be closed.
Ignore holes: You cannot explicitly exclude objects from the geometry of a 3D freeform space.
If an object is a valid bounding object for 3D freeform spaces and is set to be bounding, it will be
deducted from the surrounding space. In any other case, the object will be ignored during the generation
of the surrounding space.
Maximum gap size: No gaps in the bounding objects are allowed in the generation of 3D freeform
spaces. If the bounding objects are not completely closed, no valid boundary for the space is found.
12 If you need to generate spaces within boundaries that already contain a space, select Yes for Allow
overlapping spaces.
13 Expand Component Dimensions.
1592 | Chapter 36 Spaces
Style" on page 1687.
Specifying an Area Calculation Standard for a
Bounding Objects for Associative 3D Freeform
Bounding" on page 1590 and
Adding and Removing Calculation Modifiers for
Then
select Reset visible boundaries.
select Select boundaries.
Setting an Object Instance as
Specifying Space Boundary
Drawing" on page 1629.
Spaces"
Spaces" on page 1588.
Setting an
Bounding" on page 1590.