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For information about creating your own area calculation standard, see
Appendix 3: Implementing an Area Calculation Standard Plug-in with the
AutoCAD Architecture 2011 .NET API on page 3180.
Calculating Spaces Based on the Basic Area Calculation Standard
The Basic area calculation standard supplied with AutoCAD Architecture
provides a rule for the general practice of measuring gross and net area as
accepted by most building inspectors and zoning officials in the US.
BoundaryWall Typeboundary
Objects
Classi-
fica-
tion
Space
Boundary
Type
Measured to center-
line of door panel
Wall with adjacent
spaces
DoorN/ANet
Measured to center-
line of opening frame
Wall with adjacent
spaces
OpeningN/ANet
Measured to adjacent
face
WallWallsN/ANet
Measured to oppos-
ite face
Wall without adja-
cent spaces
WallsN/AGross
Measured to center-
line of wall
Wall with adjacent
spaces
WallsN/AGross
Calculation Rules for AutoCAD Objects
You can use AutoCAD objects like closed polylines or rectangles to generate
a space that is deducted from an associative space (see Deducting Spaces from
an Associative Space on page 2935.) You could do this for example to represent
construction spaces or otherwise unavailable areas. Since AutoCAD objects
cannot be classified to control their behavior, the following standard behavior
is applied to enclosed deducted spaces formed by AutoCAD objects in the
Basic standard:
â– Net area: the area enclosed by AutoCAD linework is deducted from the
net area.
â– Gross area: the area enclosed by AutoCAD linework is not deducted from
the gross area.
Calculating Spaces Based on the Basic Area Calculation Standard | 3165
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