In any I-R zone directly across the street from any R zone, the parking facilities shall be distant at least 20 feet from said street, the building and structures at least 50 feet from said street, and loading facilities at least 30 feet from said street. (Ord. 1281 § 1, 1970; Ord. 1212 § 1, 1969; prior code § 33.512(I)(4)).