Ideal Glider Hangar Dimensions

We are looking to add a hangar to the airport and wordered what others have
figured out for the "optimum" length/width/height (door clearance) for a
hangar that would hold a combination of 15m and 17m gliders (6 or more).
Trying to find options that minimizes total cost, so door type and width
also plays a role in the solution. We are at 45 degrees N latitude so 90mph
and 40 pound snow load is involved.

Thanks