Spaces use information to perform volume calculations on the building model. This space information also affects a Systems Analysis of your model. You may need to define or redefine this information so that the spaces in your model comply with the specifications. 
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  In the Project Browser, open a floor plan or section view that contains the space that you want to modify. 
  
Note: Spaces do not display in elevation or 3D views. 
  
 
 
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  Make spaces visible, if needed. 
 
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  Select a space either in the floor plan, in the section view, or in the System Browser. 
 
- On the Properties palette, modify the 
  space properties. 
 
- Click OK.