Portal Frame at Gable End Wall Opening

[TRAK.Structural]

Different question on the same garage structure I posted another thread about.

Can you use a prescriptive portal frame from the residential code at a gable end wall where the wall framing is balloon framed (i.e. full height studs with no flat double top plate at ceiling level)? The code (in my area) lists a max 4 ft pony wall height over the garage header and a max wall height of 12 ft to the double top plate. The peak of the roof for my case is about 18 ft so that is obviously taller than 12 ft. I'm wondering if my only other options are an engineered frame, or using a platform framed wall that meets the 12 ft limit and bracing the hinge at the double top plate.

 

[XR250]

I don't believe you can do a prescriptive frame here.

" using a platform framed wall that meets the 12 ft limit and bracing the hinge at the double top plate."

How would you go about bracing the hinge?

I have used a horizontal LVL girt to do this.

You could also just do a flat ceiling near the front and a tray or scissors above where the car's roof would be.

 

[TRAK.Structural]

Yea was thinking LVLs to span horizontally to the perpendicular walls. Detailing might get kind of weird but probably do-able.