In all areas of special flood hazards the following standards
are required:
A. Anchoring.
(1) All new construction and substantial improvements shall be anchored
to prevent flotation, collapse, or lateral movement of the structure.
(2) All manufactured homes shall be anchored to resist flotation, collapse
or lateral movement. Methods of anchoring may include, but are not
to be limited to, use of over-the-top or frames ties to ground anchors.
This requirement is an addition to applicable state and local anchoring
requirements for resisting wind forces.
B. Construction materials methods.
(1) All new construction and substantial improvements shall be constructed
with materials and utility equipment resistant to flood damage.
(2) All new construction and substantial improvements shall be constructed
using methods and practices that minimized flood damage.
C. Utilities.
(1) All new and replacement water supply systems shall be designed to
minimize or eliminate infiltration of floodwaters into the system;
(2) New and replaced sanitary sewage systems shall be designed to minimize
or eliminate infiltration of floodwaters into the system and discharge
from the system into floodwaters;
(3) On-site waste disposal system shall be located to avoid impairment
to them or contamination from them during flooding; and
(4) Electrical, heating, ventilation, plumbing and air-conditioning equipment
and other service facilities shall be designed and/or located so as
to prevent water from entering or accumulating within the components
during conditions of flooding.
D. Subdivision proposals.
(1) All subdivision proposals shall be consistent with the need to minimize
flood damage;
(2) All subdivision proposals shall have public utilities and facilities
such as sewer, gas, electrical, and water systems located and constructed
to minimize flood damage;
(3) All subdivision proposals shall have adequate drainage provided to
reduce exposure to flood damage; and
(4) Base flood elevation data shall be provided for subdivision proposals
and other proposed development which contain at least 50 lots or five
acres (whichever is less).
E. Manufactured homes.
(1) Manufactured homes shall be anchored in accordance with Subsection
A(2).
(2) All manufactured homes to be placed or substantially improved within
an area of special flood hazard shall be elevated on a permanent foundation
such that the top of the lowest floor is at or above the base flood
elevation.