Structures accessory to a principal building need not be elevated
or floodproofed to remain dry, but shall comply, at a minimum, with
the following requirements:
The accessory structure shall not be designed or used for human
habitation, but shall be limited to the parking of vehicles, or to
the storage of tools, material, and equipment related to the principal
use or activity.
Floor area shall not exceed 150 square feet.
The accessory structure will have a low damage potential.
The accessory structure will be located on the site so as to
cause the least obstruction to the flow of flood waters.
Power lines, wiring, and outlets will be elevated to the regulatory
flood elevation.
Permanently affixed utility equipment and appliances such as
furnaces, heaters, washers, dryers, etc. are prohibited.
Sanitary facilities are prohibited.
The accessory structure shall be adequately anchored to prevent
flotation or movement and shall be designed to automatically provide
for the entry and exit of floodwater for the purpose of equalizing
hydrostatic forces on the walls. Designs for meeting this requirement
must either be certified by a registered professional engineer or
architect, or meet or exceed the following minimum criteria:
A.
A minimum of two openings having a net total area of not less than
one square inch for every square foot of enclosed space.
B.
The bottom of all openings shall be no higher than one foot above
grade.
C.
Openings may be equipped with screens, louvers, etc., or other coverings
or devices provided that they permit the automatic entry and exit
of flood waters.
