Buildings located in Zone VE that are subject to Section 16-6-060 must meet the protection requirements described in this section.
(a) All new construction and substantial improvements shall be elevated on pilings or columns so that the bottom of the lowest horizontal structural member of the lowest floor (excluding the pilings or columns) is elevated to or above the F.P.E., and 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.
(i) Water loading values used shall be those associated with the base flood.
(ii) Wind loading values shall determined in accordance with Title 14B.
(b) A licensed structural 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 Section 16-6-071(a).
(c) 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 lattice-work, 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.
(i) For the purpose of this section, a breakaway wall shall have a design safe loading resistance of not less than 10 and no more than 20 pounds per square foot.
(ii) Use of breakaway wails which exceed a design safe loading resistance of 20 pounds per square foot shall be allowed only if a licensed structural engineer or architect certifies that the designs proposed meet all of 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 shall be as specified in Title 14B.
(iii) All space enclosed by breakaway walls, open wood lattice-work, or insect screening below the lowest floor shall be used solely for parking of vehicles, building access, or storage.
(d) Placement or substantial improvement of manufactured homes must comply with Section 16-6-071(a) through (c).
(e) Recreational vehicles must either:
(i) Be on site for fewer than 180 consecutive days;
(ii) Be fully licensed and ready for highway use; or
(iii) Comply with Section 16-6-071(a) through (c).
(Added Coun. J. 7-21-21, p. 33505, § 7)