Together, the Level and Base Offset parameters define the lower boundary of a room.
In the room properties, the Level parameter is read-only. This parameter reflects the level of the plan view in which you place the room. For example, if you place a room on a Level 2 floor plan, the Level parameter for the room is Level 2.
Use the Base Offset parameter to indicate the distance between the base level and the lower boundary of the room. To use the base level as the lower boundary, enter 0 (zero). To move the lower boundary above the base level, enter a positive number. To move the lower boundary below the base level, enter a negative number.
- Room 1 has a Base Offset of 0. The lower boundary of the room starts at Level 1.
- Room 2 has a Base Offset of 1000. The lower boundary of the room starts 1000 mm above Level 1.
- Room 3 has a Base Offset of –500. The lower boundary of the room starts 500 mm below Level 1.
For example, in the following section view:
A positive value for a base offset can only be used when the computation height of the room's associated level also has a positive value. The base offset of the room can not exceed the computation height of the associated level. For example in the example above, the base offset of Room 2 is 1000. The computation height of level 1 must be 1000 or greater for this to be possible.