About Calculating Spaces Based on the Basic Area Calculation Standard

The Basic area calculation standard supplied with AutoCAD Architecture 2023 toolset 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.

Space Boundary Type Classification boundary Objects Wall Type Boundary
Net N/A Door Wall with adjacent spaces Measured to centerline of door panel
Net N/A Opening Wall with adjacent spaces Measured to centerline of opening frame
Net N/A Walls Wall Measured to adjacent face
Gross N/A Walls Wall without adjacent spaces Measured to opposite face
Gross N/A Walls Wall with adjacent spaces Measured to centerline of wall

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. You could do this for example to represent construction spaces or otherwise unavailable areas. The following standard behavior is applied to enclosed deducted spaces formed by AutoCAD objects in the Basic standard: