1240.08 MINIMUM YARDS.
   A front landscaped yard of no less than twenty-five (25) feet or the yard shown on the Building Setback Map, whichever is greater, shall be provided. Additionally, a perimeter landscaped yard, a width of no less than twenty-five (25) feet, shall be provided along the side and rear perimeters for all uses located in the I Institutional District.
   The perimeter landscaped yard requirements apply only to structures erected after the effective date of this Code provided, however, no structure existing on such effective date shall be expanded in violation of this regulation.