[Ord. No. FP-1, 4-6-1978; Ord. No. 95-6, 1-12-1995]
Any person who shall violate a provision of this article or
shall fail to comply with any of the requirements thereof, shall be
responsible for a municipal civil infraction.
[Ord. No. FP-1, 4-6-1978; Ord. of 2-5-1987]
In all areas of special flood hazard, the following general
provisions shall apply and shall be required:
(1) All new construction and substantial improvements shall be anchored
to prevent flotation, collapse, or lateral movement of the structure.
(2) All new construction and substantial improvements shall be constructed
with materials and utility equipment resistant to flood damage.
(3) All new construction and substantial improvements shall be constructed
by methods and practices that minimize flood damage.
(4) All new construction and substantial improvements shall be constructed
with 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 compartments
during conditions of flooding.
(5) For all new construction and substantial improvements, any fully
enclosed areas below the lowest floor that are subject to flooding
shall be designed to automatically equalize hydrostatic flood forces
on exterior walls by allowing for the entry and exit of floodwaters.
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. 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.
b. The bottom of all openings shall be no higher than one foot above
grade.
c. Openings may be equipped with screens, louvers, valves, or other
coverings or devices provided that they permit the automatic entry
and exit of floodwaters.
(6) All new and replacement water-supply systems shall be designed to
minimize or eliminate infiltration of floodwaters into the system.
(7) All new and replacement sanitary-sewer systems shall be designed
to minimize or eliminate infiltration of floodwaters into the system
and discharges from the system into floodwaters.
(8) On-site waste-disposal systems shall be located to avoid impairment
to them or contamination from them during flooding.
[Ord. No. FP-1, 4-6-1978; Ord. of 2-5-1987]
In all areas of special flood hazards where base-flood elevation data has been provided as set forth in Section
10-52 or Section 10-89(9), the following specific provisions shall apply and shall be required:
(1) Residential construction. New construction or substantial improvement
of any residential structure shall have the lowest floor, including
basement, elevated to or above base-flood elevation.
(2) Nonresidential construction. New construction or 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, be floodproofed so that below the base-flood
level the structure 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 shall
develop and/or review structural design, specifications, and plans
for the construction, and shall certify that the design and methods
of construction satisfy the standards of this subsection. A record
of such certification, including the specific elevation in relation
to mean sea level to which such structures are floodproofed, shall
be provided to and maintained by the Township zoning inspector.
(3) Manufactured homes. No manufactured home shall be placed in a floodway.
All developers of manufactured home parks or subdivisions located
within an area of special flood hazard shall file an evacuation plan
indicating alternative access and escape routes with the Federal Emergency
Management Agency (FEMA). All manufactured homes to be placed or substantially
improved within such existing manufactured home parks or subdivisions
shall be elevated on a permanent foundation such that the lowest floor
of the manufactured home is at or above the base-flood elevation and
shall be securely anchored to an adequately anchored foundation system.
All manufactured homes shall be anchored to resist flotation, collapse,
or lateral movement by providing over-the-top or frame ties to ground
anchors or by other anchoring techniques provided for in the FEMA
manual entitled "Manufactured Home Installation in Flood Hazard Areas."
Specific requirements shall be as follows:
a. If over-the-top ties are used, they shall be provided at each of
the four corners of the manufactured home with two additional ties
per side at intermediate locations. Manufactured homes less than 50
feet long require only one additional tie per side.
b. If frame ties are used, they shall be provided at each corner of
the manufactured home, with five additional ties per side at intermediate
locations. Manufactured homes less than 50 feet long require only
four additional ties per side.
c. All components of the anchoring system shall be capable of carrying
a force of 4,800 pounds.
d. Any additions to the manufactured home shall be anchored in the same
manner and to the same extent as the principal manufactured home.
(4) New manufactured home parks and subdivisions; expansions to existing
manufactured home parks and subdivisions. With respect to new and
existing manufactured home parks and subdivisions, with respect to
existing manufactured home parks and subdivisions where the repair,
reconstruction, expansion or improvement of the streets, utilities,
and pads equals or exceeds 50% of the value of the streets, utilities,
and pads before the repair, reconstruction, expansion or improvement
has commenced, and with respect to manufactured homes not being placed
in a manufactured home park or subdivision, specific requirements
shall be as follows:
a. Stands or lots shall be elevated on compacted fill, on pilings or
by other elevation techniques provided for in the FEMA manual entitled
"Manufactured Home Installation in Flood Hazard Areas" so that the
lowest floor of the manufactured home is at or above the base-flood
level.
b. Adequate surface drainage and access for a hauler shall be provided.
c. Where pilings are used for elevation purposes, lots shall be large
enough to permit steps, piling foundations shall be placed in stable
soil no more than 10 feet apart, and reinforcement must be provided
for pilings more than six feet above the ground level. With respect
to existing manufactured home parks and subdivisions which are being
expanded or improved, these requirements shall apply only in the expanded
or improved portion.
(5) Subdivision proposals. All subdivision proposals, including proposals
for new manufactured home parks and subdivisions, shall be consistent
with the need to minimize flood damage and shall meet the following
specific requirements:
a. All subdivision proposals shall have public utilities and facilities
such as sewer, gas, electrical, and water systems located and constructed
to minimize flood damage.
b. All subdivision proposals shall have adequate drainage provided to
reduce exposure to flood damage.
c. Base-flood elevation data shall be provided for all subdivision proposals
and other proposed development which contain at least 50 lots or five
acres, whichever is less.
(6) Designated floodways. Located within areas of special flood hazard established in Section
10-52 are areas designated as floodways. Since the floodway is an extremely hazardous area because of the velocity of floodwaters which carry debris, potential projectiles, and erosion potential, encroachments, including fill, new construction, substantial improvements, and other developments shall be prohibited unless certification by a registered professional engineer or architect is provided demonstrating that encroachment will not result in any increase in flood levels during occurrence of the base-flood discharge.
(7) Undesignated floodways. Located within the areas of special flood hazard established in Section
10-52, are areas in which elevation has been designated but no floodway has been delineated. In such areas, no new construction, substantial improvements, or other development, including fill, shall be permitted, unless it is demonstrated that the cumulative effect of the proposed development, when combined with all other existing anticipated development, will not increase the water surface elevation of the base flood more than nine-tenths feet at any point within the community.