I took today off work to gather up material and close in a 15x30 bay in my barn so the cows and goats can stay warm. Down the road i will build a small barn for them to sleep in and this spot im enclosing will be an air conditioned shop. Did some measuring on the rv bay and i think i have enough height for a second story man cave, also 15x30. Its like a 30x45 barndominium waiting to happen!