When finding the hay barn relative to entry streets, other structures and utility lines, permit clearance for the largest vehicle that is predicted for use about the lifetime of the barn. Semi-trailers demand a least 55-foot turning radius and 13.5 foot interior height clearance. Self-propelled bale wagons need 17 feet https://kingswoodhomes.uk.com/news/love-at-first-sight-at-spinners-brook/