Autodesk 24000-000000-9860 - Revit Architecture - PC, User Manual

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■ Perimeter of each mass floor. Use this information to create rough cost estimates based on linear
dimensions.
■ Volume of each mass floor, in cubic units. Use this information to estimate HVAC loads.
See Examples of Conceptual Design Analysis on page 529.
Mass Floors at the Top of a Mass
When you use mass floors to divide a mass, Revit Architecture creates a visible mass floor at each specified
level that intersects the mass, except for any level that coincides with a top face of the mass.
For example, suppose you create a mass that starts at level 1 and ends at level 4. In the Mass Floors dialog,
you select levels 1, 2, 3, and 4. As a result, Revit Architecture creates mass floors at levels 1, 2, and 3. The
software does not create a mass floor at level 4 because level 4 coincides with the top of the mass. It does
not have exterior surface area (vertical surfaces extending upward from its perimeter) or volume (from level
4 upward). Instead, the exterior surface area for level 3 includes the vertical surfaces (walls) that enclose level
3 and also the top horizontal surface (roof) that occurs at level 4. As a result, the exterior surface area for the
top floor of a mass may be disproportionately larger than lower floors.
524 | Chapter 10 Conceptual Design with Massing Studies