(a) The lowest story, or the ground story, or first story of any building is the lowest story, the floor of which is not more than three and one-half (3-1/2) feet below the average contact ground level at the exterior walls of the building; except that any basement used for residence purposes, other than for a janitor, or caretaker, or his family, shall be deemed a ground or first story.
(b) A mezzanine story shall be deemed a full story in case it covers more than one-third (1/3) of the area of the ground story. (Ord. 1069-94. Passed 4-28-94.)