Autodesk 24000-000000-9860 - Revit Architecture - PC, Руководство пользователя

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Room Area
To compute the area of a room, Revit Architecture does the following:
■ Finds room boundaries . Many model elements have a Room Bounding parameter. For some elements
(such as walls and columns), the Room Bounding parameter is turned on by default. For other elements,
you must turn on the Room Bounding parameter. (See
Room-Bounding Elements on page 917.) To define
room boundaries where no walls exist, use room separation lines. (See Room Separation Lines on page
918.) You can also change the wall layer at which the room boundary is located. (See Changing the Room
Area Boundary Location on page 928.)
■ Uses the computation height . The computation height is a defined height above the base level of the
room. Revit Architecture measures the perimeter of the room at this height. If a building includes sloped
walls or other atypical features, you may need to adjust the computation height to achieve more accurate
room areas and volumes. See
Computation Height on page 926.
By measuring the perimeter of the room at the defined height, Revit Architecture determines the area of the
room.
Related topics
■ Room Volume on page 928
■ Creating Room/Area Reports on page 1290
■ Analyzing a Conceptual Design on page 522
■ Room Areas and Perimeters for Design Options on page 1256
Computation Height
Revit Architecture measures the perimeter of a room at a defined distance above the base level of the room.
This distance is the computation height. It is used to compute the room perimeter, area, and volume. By
default, the computation height is 4’ or 1200 mm above the base level of the room (the height of the default
cut plane).
For buildings with vertical walls, the default computation height usually gives accurate results. However, if
a building includes sloped walls or other atypical features, you may need to adjust the computation height
to achieve more accurate room areas and volumes.
For example, the following drawing shows a section of a room with a sloped wall. The dotted line across the
lower part of the room indicates the current computation height. (This line displays when you select the
room.) Revit Architecture uses the perimeter of the room at the computation height when computing the
room area and volume.
926 | Chapter 14 Rooms and Areas