Mine is 30x48 pole building enter on the west side 30ft,seen alot of buildings they put the over head door in the middle of the end you loose alot of wall space. Had my entry door 36in,and overhead 16ft x 8ft, shoved as far to the north as possible left about 9ft of wall space,nice for storage on side,also remember some sort of moisture barrier keep floor from sweating,just some thoughts.
