Hello!
This is my first pass at 3.1 and it definitely makes you think a little more than 4.0.
My questions, please verify if this is correct thinking with regard to duct clearances:
1st Floor:
It looks like the deepest duct is 24", so 24" + 8" clearance = 32" needed from finish ceiling to bottom chord of trusses, correct?
2nd Floor:
Deepest duct is again 24", so 32" again needed from finish ceiling to bottom chord of trusses.
Meeting Room
It looks like there is a riser duct leading in that is 32x12, then the 12" depth + 8" clearance = 20" to bottom chord of truss from ceiling finish.
Thanks!