Select
Floors and Ceilings > Add Area (Floor, Ceiling,
...).
Select Ceiling from the list.
Do either of the following:
If you have not used the adding function before, the list for
selecting a structure opens automatically.
If you already have used the adding function, the previously
selected structure is the default. Change the structure by first
selecting the
Select Material from List function from the contextual
toolbar. The function opens the list for selecting a
structure.
Select a ceiling structure from the list, for example
CEIL-47x197-PB.
Confirm the selection and close the list by clicking OK.
The selected structure and its top height in
relation to the model origin are displayed in the middle of the
status bar.