Revit is designed to work with 4 area reinforcement layers:
- top major
- top minor
- bottom major
- bottom minor
Area Reinforcement Symbol Family has built-in visibility parameters "Bars In Minor Direction" and "Bars In Major Direction", which allows to control label visibility depending on bar's major/minor orientation. But there is no way yet to separate visibility between TOP/BOTTOM orientation.
It would be very useful and (flexible for adjustments combined labels) to have 4 separate visibility parameters to derive all 4 layers' states directly from Area Reinforcement system parameters:
"Bars In Top Major Direction" (Yes/No)
"Bars In Top Minor Direction" (Yes/No)
"Bars In Bottom Major Direction" (Yes/No)
"Bars In Bottom Minor Direction" (Yes/No)
Please see the attached image.
