Thanks for all the great info on here. Sounds like 14x14 doors is the way to go? Or at least definitely 14' height and 12' wide?
As far as depth... I've researched everything from 40 to 60 feet.
Width, how far out do the slides usually come? 3 feet or so? so want to be able to walk around with the slides out? So lets say you have a 14' wide door, with a 8.5' wide coach + 3' + 3' for slides on both sides, your at about 14-15' which is basically the width of the door. So for room on the side, you want your door about 10 feet or so from the side of the barn?
So hypothetically lets say you want a symmetrical barn with 2 identical bays... how much room in between the doors? 15'?
In my example above it would be 10' + 14' (door) + 15' (in between doors) + 14' (door) + 10' = 63'
63' wide seems big, doesn't it? So where do you reduce? In between, on the sides?