The requirements of this section apply to development in coastal high hazard areas designated Zone V or VE on the community's effective FIRM (and when designated on a preliminary or final FIRM issued by FEMA under the circumstances provided in Section 1476.23).
(a) All new construction and substantial improvements shall be elevated on pilings or columns that may be armored as necessary to withstand Lake Erie ice forces so that:
(1) The bottom of the lowest horizontal structural member supporting the lowest floor (excluding the pilings or columns) is elevated to or above the flood protection elevation, and
(2) The pile or column foundation and structure attached thereto is anchored to resist flotation, collapse, and lateral movement due to the effects of wind and water loads acting simultaneously on all building components.
A. Water loading values shall be those associated with the base flood.
B. Wind loading values shall be those defined according to American Society of Civil Engineers 7-13 Minimum design loads and associated criteria for buildings and other structures, or current version adopted by Ohio Board of Building Standards.
C. A registered professional engineer or architect shall develop or review the structural design, specifications and plans for the construction, and shall certify that the design and methods of construction to be used are in accordance with accepted standards of practice for meeting the provisions of division (a)(1) and (a)(2) of this section.
(b) All new construction and substantial improvements shall have the space below the lowest floor either free of obstruction or constructed with non-supporting breakaway walls, open wood latticework, or insect screening intended to collapse without causing collapse, displacement, or other structural damage to the elevated portion of the building or supporting foundation system.
(1) For the purpose of division (b) of this section, a breakaway wall shall have a design safe loading resistance of not less than ten and no more than twenty pounds per square foot.
(2) Use of breakaway walls which exceed a design safe loading resistance of twenty pounds per square foot (either by design or where so required by local or state codes) may be permitted only if a registered professional engineer or architect certifies that the designs proposed meet all the following conditions:
A. Breakaway wall collapse shall result from a water load less than that which would occur during the base flood; and
B. The elevated portion of the building and supporting foundation system shall not be subject to collapse, displacement, or other structural damage due to the effects of wind and water loads acting simultaneously on all building components (structural and non-structural). Water loading values shall be those associated with the base flood. Wind loading values shall be those defined according to American Society of Civil Engineers 7-16 Minimum design loads and associated criteria for buildings and other structures, or equivalent standard.
(3) All space enclosed by breakaway walls, open wood latticework, or insect screening below the lowest floor shall be used solely for parking of vehicles, building access, or storage.
(c) The use of fill or redistributed existing fill, placed after the initial identification of Zones V, VE or V1-30 on the community's FIRM, for structural support of buildings is prohibited.
(d) Alteration of sand dunes that will increase potential flood damage is prohibited.
(e) Placement or substantial improvement of manufactured homes must comply with division (a) through (e) of this section.
(f) Recreational vehicles must either:
(1) Be on site for fewer than 180 consecutive days;
(2) Be fully licensed and ready for highway use; or
(3) Comply with division (a) through (e) of this section.
(Ord. 21-33. Passed 2-22-21.)