I found the problem and solved it partially - just enough to continue working!
Problem lies in the "Add Wall Recesses to Zones" from Project Preferences. If it is on, Zones calculate only the recesses of certain elements:
- If there are only windows with sill greater than zero in the room it works fine.
- If there are windows with sill set to zero it gets wrong.
- If there are
any
custom made windows with Wallhole ID it gets wrong.
- Doors affect it from time to time but I was not able to understand how and why!
So, go to Project Preferences/Zones and uncheck all the "Add Wall Recesses to Zones" checkboxes. Uncheck also "Area Reduction under low ceiling" - just in case!
Note this:
- Changing Zones in Project Preferences affects
all
the floors and views!
- Changing Dimensions in Project Preferences for area calculation affects
only
the current view. To remember the changes you have to resave the view.
- After changing Zones in Project Preferences itis better to update the zones in
every
story separately!
- If you have any modules with zones you have to update them separately!
This is what I start to do now!