1. Select all the level dimensions you want to change.
2. ADD to the selection the text of one of them.
3. Change that text to reference Sea Level
Back in the floor plan window you will see that all selected level dimensions have all switched their elevations to be to sea level.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"