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 that are placed or substantially
improved within special flood hazard areas on the community's FIRM
on sites:
(a)
Outside of a manufactured home park or subdivision;
(b)
In a new manufactured home park or subdivision;
(c)
In an expansion to an existing manufactured
home park or subdivision; or
(d)
In an existing manufactured home park or subdivision
on which a manufactured home has incurred substantial damage as a
result of a flood, be elevated on a permanent foundation such that
the lowest floor of the manufactured home is elevated to or above
the base flood elevation and be securely anchored to an adequately
anchored foundation system to resist flotation, collapse and lateral
movement.
(3)
All manufactured homes to be placed or substantially improved on sites in an existing manufactured home park or subdivision within special flood hazard areas on the community's FIRM that are not subject to the provisions of § 74-20A(2) be elevated so that either:
(a)
The lowest floor of the manufactured home is
at or above the base flood elevation; or
(b)
The manufactured home chassis is supported by
reinforced piers or other foundation elements of at least equivalent
strength that are no less than 36 inches in height above grade and
be securely anchored to an adequately anchored foundation system to
resist flotation, collapse and lateral movement.
(4)
Recreational vehicles.
(a)
All recreational vehicles placed on sites within
Zone AE shall either:
[1]
Be on the site for fewer than 180 consecutive
days;
[2]
Be fully licensed and ready for highway use;
or
[3]
Meet all standards of Section 60.3(b)(1) of
the National Flood Insurance Program Regulations and the elevation
and anchoring requirements for manufactured homes in Paragraph (c)(6)
of Section 60.3.
(b)
A recreational vehicle is ready for highway
use if it is on its wheels or jacking system, is attached to the site
only by quick-disconnect type utilities and security devices and has
no permanently attached additions.
B.
Construction materials and 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 minimize flood
damage.
(3)
All new construction or substantial improvements shall
have electrical, heating, ventilation, plumbing and air-conditioning
equipment and other service facilities that are designed and/or located
so as to prevent water from entering or accumulating within the components
during conditions of flooding.
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 replacement sanitary sewage systems shall
be designed to minimize or eliminate infiltration of floodwaters into
the systems and discharge from the systems into floodwaters.
(3)
On-site waste disposal systems shall be located to
avoid impairment to them or contamination from them during 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.
(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).
(5)
Residential subdivisions shall not be approved unless
the applicant can demonstrate that lands sufficient to meet the lot
area, frontage and yard requirements of the Zoning Ordinance[1] exist on each proposed lot in areas outside the special
flood hazard area.
[1]
Editor's Note: The Zoning Ordinance is on
file in the city offices.
In all areas of special flood hazards where base flood elevation data has been provided as set forth in § 74-8, Basis for establishing the areas of special flood hazard, or § 74-16B, Use of other base flood data, the following provisions are required.
A.
Residential construction. New construction and substantial
improvement of any residential structure shall have the lowest floor,
including basement, elevated to or above base flood elevation.
[Amended 7-10-2019 by Ord. No. 2019-08]
B.
Nonresidential construction. New construction and
substantial improvement of any commercial, industrial or other nonresidential
structure shall either have the lowest floor, including basement,
elevated to the level of the base flood elevation or, together with
attendant utility and sanitary facilities, shall:
C.
Residential and nonresidential construction. For all
new construction and substantial improvements, fully enclosed areas
below the lowest floor that are subject to flooding are permitted,
provided that the enclosed areas meet the following requirements:
(1)
The enclosed area is unfinished or flood resistant,
used solely for parking of vehicles, building access or storage.
(2)
The area is not a basement.
(3)
Shall be designed to automatically equalize hydrostatic
flood forces on exterior walls by allowing for the entry and exit
of floodwater. Designs for meeting this requirement must either be
certified by a registered professional engineer or architect or must
meet or exceed the following minimum criteria: A minimum of two openings
having a total net area of not less than one square inch for every
square foot of enclosed area subject to flooding shall be provided.
The bottom of all openings shall be no higher than one foot above
grade. Openings may be equipped with screens, louvers or other coverings
or devices, provided that they permit the automatic entry and exit
of floodwater.
Located within areas of special flood hazard established in § 74-8 are areas designated as floodways. Since the floodway is an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles and erosion potential, the following provisions apply:
A.
Prohibit encroachments, including fill, new construction,
substantial improvements and other development unless certification
by a registered professional engineer or architect is provided demonstrating
that encroachments shall not result in any increase in flood levels
during the occurrence of the base flood discharge.
C.
Prohibit the placement of manufactured homes.
