Working With Space Boundary Offsets; Working With Manual Boundary Offsets - Autodesk 24108-051400-9000 - AutoCAD Revit Architecture Suite 2008 User Manual

Working with Space Boundary Offsets

Spaces have 4 different boundaries, each of which displays a different aspect of the space and can be scheduled and
edited individually:
Base boundary: Normally representing the inner area of a room covered by a space. This is the area generated by
bounding objects in an associative space. In most cases, the base boundary is identical to the net boundary, except
in some area calculation standards like the Swedish SIS standard.
Net boundary: This boundary is offset from the base boundary and can be used for planning and detailed design.
For example, if you need to determine the hiring of cleaning personnel for an office, you would use the net area
as the calculation basis. The net boundary can also be used for special applications when the calculated area of a
space is smaller than the base boundary.
Usable boundary: This boundary is offset from the base boundary and is in many area calculation standards used
for planning and detailed design, renting calculations, tax and other duty calculations, statistical calculations,
maintenance, pricing, and more. The usable boundaries typically extend from the inside of the exterior walls to
the middle of the interior walls (or a specified distance into the interior walls).
Gross boundary: the gross boundary is offset from the base boundary and can be used in connection with cost
calculation, price estimation, calculation of tax and other duties, key numbers for the building or a specific floor,
and more. Normally, the gross boundary is measured from the outside of the exterior walls to the middle of the
interior walls.
There are different ways to determine how the offsets between the boundaries should be calculated:
Manual
By style
By Standard (by area calculation standard)

Working with Manual Boundary Offsets

You can define the offsets between the boundaries of a space manually. Manual boundaries have grips to edit the
boundary shape of each boundary. If you insert a new space with manual boundary offsets, by default the offsets
between the boundaries are 0. To grip-edit manual boundaries, see
and Grip-Editing
1626 | Chapter 36 Spaces
Spaces" on page 1638. Associative and non-associative spaces may have manual boundary offsets.
Activating Manual Space Boundaries" on page 1637