Exterior Surface Area Is Too Large; Exterior Surface Area Is Too Small; Gross Floor Area Is Not Available For A Mass Floor Schedule; Mass Gross Surface Area Is Too Small - Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual

Solution: With the cursor over the mass floor, press TAB to change the focus from the mass to the mass floor.
(Check the status bar for confirmation.) Then click to select the mass floor or apply the tag to it.

Exterior Surface Area Is Too Large

Symptom: You used mass floors to divide a mass. In a schedule, tag, or element properties, you notice that
the exterior surface area for the uppermost mass floor of the mass is disproportionately larger than for the
other mass floors.
Issue: The exterior surface area calculation for the uppermost mass floor includes the top surface. See Mass
Floors at the Top of a Mass on page 524.
Solution: None required.

Exterior Surface Area Is Too Small

Symptom: You used mass floors to divide a mass. In a schedule, tag, or element properties, you notice that
the exterior surface area for the mass floors is not as large as you expect it to be.
Issue: The mass is joined to another mass. The area of the inner wall shared by the masses is deducted from
the exterior surface area for each mass floor. It is also deducted from the gross surface area for the mass. See
Overlapping Mass Faces on page 521.
Solution: None required.

Gross Floor Area Is Not Available for a Mass Floor Schedule

Symptom: You want to create a mass floor schedule that includes the gross floor area of the mass. However,
the Gross Floor Area field is not listed on the Fields tab of the Schedule Properties dialog.
Issue: Gross Floor Area is a parameter of the mass, not the mass floor.
Solution: Create a mass schedule that shows Gross Floor Area.

Mass Gross Surface Area Is Too Small

Symptom: In a schedule, tag, or element properties, you notice that the gross surface area for a mass is not
as large as you expect it to be.
Issue: The mass is joined to another mass. The area of the inner wall shared by the masses is deducted from
the gross surface area for each mass. If you create mass floors, this inner wall area is also deducted from the
exterior surface area for each mass floor. See Overlapping Mass Faces on page 521.
Solution: None required.

Creating Building Elements from Mass Instances

You can create building elements from the faces of mass instances, and from the faces of generic models.
Use mass instances when you want to model a building abstractly, or if you want to schedule gross volume,
surface, and floor area. Use generic models if you must create a unique, unusual shape but do not need to
model the entire building abstractly.
Creating Building Elements from Mass Instances | 543