(a) On the basis of the most recent available base flood elevation data the following standards
apply in the
zone:
(1) All
and substantial improvements of residential structures
have the lowest portion of all horizontal structural members supporting floors, excluding footings, pile caps, piling, non-structural slabs, girders and grade beams, located at or above the
level. All basement floor surfaces shall be located at or above the
level.
(2) All
and substantial improvements of non-residential structures
have either:
A. The lowest portion of all horizontal structural members supporting floors located at or above the
level;
B. Be constructed such that below
level, together with attendant utility and sanitary facilities, the
is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect
certify that the standards of this division (a)(2)B. are satisfied, and that the floodproofing methods employed are adequate to withstand the flood depths, pressures and velocities, impact and uplift forces and other factors associated with a
in the location of the
. Such certification shall be submitted on the form provided by the Michigan Department of Natural Resources, and shall indicate the elevation to which the
is floodproofed; or
C. All basement floor surfaces
also be located at or above the
level.
(b) The most recent
elevation data received from the Federal Insurance Administration
take precedence over data from other sources.
(Ord. 220, passed 2-13-1991)