Your roof trusses on a 24' span with a 7/12 pitch will be 7' tall measured from the ceiling joist to the top of the peak. This leaves you 12' of available wall height based on your 19' max by code.
If it were me, I'd want the building as tall as I could go. If you get close to 12' inside you could add a lift someday and you could make the doors a standard height which might save you some money (10' x 10'). Just a thought.
What are all of the drain pipes for?
Mike B
