Dreamscape

The joist size is set to 125mm which I would say is not really to any code- and can't be changed

Using Home Designer Architectural 2015

They're disabled in the screenshot you are showing.  But I'm surprised that they are missing from the 3D Frameview

Good afternoon

I just found out that I can't edit the height of the floor joists / ceiling structure

Should I be able to see the Rim Joists in 3D Framing view or is this deliberately invisible in Architectural 2015

Thanks