In addition to the definitions set forth in Section 14-102, in this Chapter the following definitions shall apply:

(1) Enclosed Public Open Space. In order for a parcel of land to be considered as enclosed public open space, the following conditions must be met:

(.a) The enclosed space must be open and physically accessible to the public and the users of the building during the hours which the building is open to the public;

(.b) The walls abutting sidewalks, arcades or open areas must be constructed of at least seventy percent (70%) glass or other translucent materials. The roof over the enclosed public open space must be constructed of at least seventy-five percent (75%) glass or other transparent or translucent materials;

(.c) The area above the enclosure or roof must be completely unobstructed and open to the sky;

(.d) The enclosed space may not consist of any areas used for parking, loading or access driveways;

(.e) The enclosed space must be a minimum of twenty (20) feet in depth at its narrowest point and contain a minimum of four hundred (400) square feet.