Vaulted ceiling height determination

you can insert a section view on to a worksheet then using “linear dimension” found under “dimensions” in the toolbar, you will be able to determine the height.
 
 steps:
create a section using the section icon found under the toolbar located at the bottom of the screen.
select worksheet (i.e “2 Elevation”), which is also found under the toolbar located at the bottom of the screen.
 when you are in the worksheet layout, select SmartView and insert the section.
after the section has been inserted on to the worksheet select Tools –> Dimensions –> Linear Dimensions to measure the height you need.