In all areas of special flood hazards the following provisions
are required for all new construction and substantial improvements:
(1)
All
new construction or substantial improvements shall be designed (or
modified) and adequately anchored to prevent flotation, collapse or
lateral movement of the structure resulting from hydrodynamic and
hydrostatic loads, including the effects of buoyancy;
(2)
All
new construction or substantial improvements shall be constructed
by methods and practices that minimize flood damage;
(3)
All
new construction or substantial improvements shall be constructed
with materials resistant to flood damage;
(4)
All
new construction or 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 components
during conditions of flooding;
(5)
All
new and replacement water supply systems shall be designed to minimize
or eliminate infiltration of floodwaters into the systems;
(6)
New
and replacement sanitary sewer systems shall be designed to minimize
or eliminate infiltration of floodwaters into the systems and discharge
from the systems into floodwaters; and
(7)
On-site
waste disposal systems shall be located to avoid impairment to them
or contamination from them during flooding.
(Ordinance 87-01 adopted 2/3/87)
In all areas of special flood hazards where base flood elevation data has been provided as set forth in section 3.10.007, section 3.10.032(8), or section 3.10.053(c), the following provisions are required:
(1)
Residential construction.
New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), elevated to or above the base flood elevation. A registered professional engineer, architect, or land surveyor shall submit a certification to the floodplain administrator that the standard of this subsection as proposed in section 3.10.033(a)(1) is satisfied.
(2)
Nonresidential construction.
New construction and substantial
improvements of any commercial, industrial or other nonresidential
structure shall either have the lowest floor (including basement)
elevated to or above the base flood level or, together with attendant
utility and sanitary facilities, be designed 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 are in accordance with accepted standards of practice
as outlined in this subsection. A record of such certification which
includes the specific elevation (in relation to mean sea level) to
which such structures are floodproofed shall be maintained by the
floodplain administrator.
(3)
Manufactured homes.
(A)
Require that all manufactured homes to be placed within zone A, shall
be installed using methods and practices which minimize flood damage.
For the purpose of this requirement, manufactured homes must be elevated
and anchored to resist flotation, collapse, or lateral movement. Methods
of anchoring may include, but are not limited to, use of over-the-top
or frame ties to ground anchors. This requirement is in addition to
applicable state and local anchoring requirements for resisting wind
forces.
(B)
All manufactured homes shall be in compliance with subsection (1).
(Ordinance 87-01 adopted 2/3/87)
(c)
Base flood elevation data shall be generated for subdivision proposals and other proposed development including manufactured home parks and subdivisions which is greater than 50 lots or 5 acres, whichever is lesser, if not otherwise provided pursuant to section 3.10.007 or section 3.10.032(8) of this article.
(d)
All
subdivision proposals including manufactured home parks and subdivisions
shall have adequate drainage provided to reduce exposure to flood
hazards.
(e)
All
subdivision proposals including manufactured home parks and subdivisions
shall have public utilities and facilities such as sewer, gas, electrical
and water systems located and constructed to minimize or eliminate
flood damage.
(Ordinance 87-01 adopted 2/3/87)
