(a) When Required. In all districts, in connection with every industrial, business, institutional, recreational, residential or any other use, there shall be provided, at the time any building or structure is erected or is enlarged or increased in capacity, off-street parking spaces for automobiles in accordance with the requirements herein.
(b) Minimum Size. Each off-street parking space shall have an area of not less than 160 square feet exclusive of access drives or aisles, and shall be of usable shape and condition. Except in the case of dwellings, no parking area provided hereunder shall be less than 1,000 square feet in area.