Adds Iso reference dimensions to the 3D Model.
Access Methods
Ribbon: Isos tab 
Iso Creation Reference Dimension
Command entry:
plantisoaddrefdim Places an Iso reference dimension into piping and displays the properties palette for the new Iso reference dimension.
After placement, a reference dimension glyph is attached to piping. You can view the 3D model in wireframe mode to easily see reference dimension objects.
Iso reference dimensions display a preview when highlighted.
The properties palette displays after placing the Iso reference dimension. This makes it easier to specify Message text and other properties for a new Iso reference dimension.
List of Prompts
Command: plantisoaddrefdim
Pick the insertion point on a pipe or fitting to place reference point:
Pick the insertion point in the model to place reference dimension point:
Select the reference object type [Building/Equipment/Floor/Gridline/Misc/steel beAm/steel Column/Pipe/Wall] <steel Column>: W
Iso Item added successfully.