Displaying room color fills in section views In Revit MEP 2009

To display the color fills and room objects in section views, you need to enable volume calculations. Follow these steps:

1. On the Settings menu, click Area and Volume Computations.
2. In the Area and Volume Computations dialog box, under Volume Computations, select the Areas and Volumes option.

Color fills and room objects will now be displayed in section views.