Ok, just wasn't too sure. That would be fine for a sheltered area. I would also make it high enough to walk into, makes things alot easyer to manage without ducking/hunching over to feed, water etc. Include nesting boxes or areas to nest. I'm assuming (and you know what that makes outta you and me) your in North Dakota? The main thing to worry about will be drafts and if a lot of rain, muddy conditions. Also, snowfall accumulation on the enclosure wire or netting, this will determine the building/construction materials you use. So your location will determine to some extent how you build your enclosure.
Tragopans can handle cold weather better than hot.
With pheasants and other gamebirds, bigger is better, if you have the space to build large enclosures.
I'm in South Texas, here's some pic's of one of my enclosures that I raise pheasants. The total enclosure measures 30' x 40' x 6', sheltered area is 12' in depth and 8' in heigth. There are 8 pens total, 5' in width. The sheltered area is to the North.
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HTH