For the purpose of computing the gross parking area for required off-street parking, 350 square feet of unobstructed net standing, maneuvering or access area shall be considered as one parking space. However, a lesser area may be considered as one parking space if the Building Inspector certifies that the layout and design of the parking area are adequate to permit convenient access and maneuvering. In any event, the size of a parking space shall be at least 18 feet long and nine feet wide, exclusive of access or maneuvering area. Parking spaces for the handicapped shall conform to ANSI A117.1-1980.

Gross floor area shall include all areas of a building as mentioned in § 280-215; provided, however, that basement or cellar floor area not used for processing, servicing or sales of goods or merchandise shall not be counted as gross floor area.

In places of assembly, other than churches, where bench-type seats are provided or where standing patrons are served at a counter or bar, each 20 linear inches of such seating or standing space shall be considered as one seat for the purpose of determining off-street parking requirements.

In any case where there is more than one work shift, the total number of employees used to compute off-street parking requirements shall include the maximum number of employees on two shifts.

When application of the units of measurement to determine required off-street parking spaces results in a fractional parking space of 1/2 or more, one parking space shall be required.