Ordinance 1987-001 Flood Damage Prevention CodeORDINANCE N0. 1-87
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AN ORDINANCE OF THE VILLAGE OF NORTH PALM BEACH, FLORIDA, AMENDING
CHAPTII2 12.5 OF THE VILLAGE OF NORTH PAIM BEACH CODE, THE F7AOD DAMAGE
PREJEN'PION CODE FL~R THE VILLAGE.
BE IT ORDAINID BY THE VILLAGE OOIINCIL OF NORTH PALM BEACH, FIARIDA:
Section 1. The follaving sections of the Village of North Palm Beach
,;Code are hereby amended:
Section 12.5-7 - Basis For Establishing the Area of Special Flood
(Hazard.
The areas of special flood hazard identified by the Federal
I]nergency Managenent Agency in a scientific and engineering report entitled,
"The Flood Insurance Study for the Village of North Palm Beach," dated
April 4, 1983, with acoompanyinq flood insurance rate map, are hereby adopted
by reference and declared to be a part of this chapter. The flood insurance
study is on file at the office of the village clerk, North Palm Beach Village
Hall, U.S. Highway 1, North Palm Beach, Florida.
Section 12.5-42(1) - Residential Construction.
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(1) Residential Construction. New construction and substantial
improvement of any residential stricture shall have the la~est floor,
including basement, elevated to or above the base flood elevation, or 8.5 feet
above MSL or 18 inches above the crown of the road serving the structure,
whichever is the highest elevation.
Section 12.5-42(2)c.
c. A Florida registered professional engineer or architect shall
idevelop the structural design, specifications, and plans for the construction,
Land shall certify that the design and methods of construction are in accordance
'with accepted standards of practice for meeting the applicable provisions of
this sub-section, and a record of such certificates which includes the specific
ilelevation (in relation to mean sea level) to which such structures are
(~floodproofed shall be provided to the official set forth in sub-section
112.5-23(3)b.
Section 12.5-94 -Coastal High Hazard Areas.
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Coastal high hazard areas (V Zones) are located within the areas of
special flood hazard established in Section 12.5-7. These areas have special
flood hazards associated with high velocity waters fran tidal surges and
hurricane wave wash; therefore, the following provisions shall apply:
(1) Location of structures. All buildings or structures shall be
located landward of the reach of the mean high tide.
(2) Construction Methods.
a. Elevation. All buildings or structures shall be elevated so
that the lowest portion of the horizontal structural members, excluding pilings
or colunu~s, of the la,+est floor is located no laver than the base flood
elevation level or 8.5 feet above MSL, whichever is higher, with all space
below the lowest floor's supporting menber open so as not to impede the flora of
water, except for breakaway walls as provided for in sub-section (2)d.
~~ b. Structural Support.
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1. All buildings or structures shall be securely anchored
lon nilinas ~r mlimu~s_
2. The pile or column foundation and the structure attached
thereto shall be anchored to resist flotation, collapse and lateral movement
due to effects of wind and water acting simultaneously on all building
ocxrg~onents. Wind and water loading values shall each have a one percent chance
of being equalled or exceeded in any given year (100-year mean recurrence
interval).
3. There shall be no fill used for structural support.
c. Certification. A Florida registered engineer or architrect
shall develop the structural design, specifications and plans for the construc-
tion 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 this sub-section.
d. Space belay the laaest floor.
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1. All new construction and substantial improvements shall
'have the space belay the lavest floor either free of obstruction or constructed
(with non-supporting breakaway walls, open wood lattice work, or insect screening
intended to collapse under wind and water loads without causing collapse,
~Idisplacement, or other structural damage to the elevated portion of the
(building or supporting foundation system. For the purposes 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. Use of breakaway wall which
exceed a design safe loading resistance of 20 pounds per square foot may lx:
pernutted only if a Florida registered professional engineer or architect
icertifies that the designs proposed meet the follaaing conditions:
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(a) Breakaway wall collapse shall result fran a water
.load less than that which would o6cur 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 simultan-
eously on all building oanponents (structural and non-structural). Maximum
wind and water loading values to be used in this determination shall each have
a one percent change of being equalled or exceeded in any given year (100-year
mean recurrence interval).
(c) Such enclosed space shall be usable solely for
parking of vehicles, building access, or storage.
Section 2. The follaving definitions are added to Section 12.5-5
of the Village of North Palm Beach Code.
"Start of Construction" includes substantial improvement, and means
the date the building permit was issued, provided the actual start of
construction, repair, reconstruction, placement, or other improvement was
within 180 days of the permit date. The actual start means either the first
placement of permanent construction of a structure on a site, such as the
pouring of slab or footings, the installation of piles, L-he construction of
columns, or any work beyond the stage of excavation. Permanent construction
does not include land preparation, such as clearing, grading and filling; nor
does it include the installation of streets and/or walkways; nor does it
include excavation for a basement, footings, piers, or foundations or the
erection of temporary forms; nor does it include the installation on the
property of accessory buildings, such as garages or sheds not occupied as
dwelling units or not part of the main structure.
"Lavest Floor" -The floor of the lowest enclosed area, including
basement, but excluding any unfinished or flood resistant enclosure, useable
solely for vehicle parking, building access, or limited storage.
Section 3. The following sections are added to the Village of North
Palm Beach Code:
I Section 12.5-41(5) Mechanical and Utility Equipment.
Electrical, heating, ventilation, plumbing, and air conditioning
equipment and other service facilities shall be designed and/or located so as
' Ito prevent water from entering or accumulating within the components during
conditions of flooding.
Section 12.5-41(6) Enclosures Below Lowest Floor.
I For all n~v construction and substantial improvements, fully
'enclosed areas belcxv the laaest 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
Ircxluirc~nent must either be certified by a Florida registered professional
~lengineer or architect or must meet or exceed the following minimum criteria:
'a nunimum of two openings having a total net area of not less than one square
''.finch for every square foot of enclosed area subject to flooding shall be
''provided. The bottan of all openings shall be no higher than one foot above
~ grade. Openings may be equipped with screens, louvers, or other coverings or
I devices provided that they permit the autanatic entry and exit of floodwaters.
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' Section 4. Delete the following section of the Village of North
;!Palm Beach Code.
Section 12.5-46.
• Section 12.5-47.
Section 5. Effective date. This Ordinance shall take effect
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immediately upon passage.
PLACID ON FIRST READING THIS 11th DAY OF DECEMBER , 1986.
PLACID ON SECOND, FINAL READING AND PASSID THIS 8th DAY OF
JANUARY 1987•
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(Village Seal)
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"Lavest Floor" -The floor of the lowest enclosed area, including
basement, but excluding any unfinished or flood resistant enclosure, useable
solely for vehicle parking, building access, or limited storage.
Section 3. The following sections are added to the Village of North
Palm Beach Code:
I Section 12.5-41(5) Mechanical and Utility Equipment.
Electrical, heating, ventilation, plumbing, and air conditioning
equipment and other service facilities shall be designed and/or located so as
' Ito prevent water from entering or accumulating within the components during
conditions of flooding.
Section 12.5-41(6) Enclosures Below Lowest Floor.
I For all n~v construction and substantial improvements, fully
'enclosed areas belcxv the laaest 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
Ircxluirc~nent must either be certified by a Florida registered professional
~lengineer or architect or must meet or exceed the following minimum criteria:
'a nunimum of two openings having a total net area of not less than one square
''.finch for every square foot of enclosed area subject to flooding shall be
''provided. The bottan of all openings shall be no higher than one foot above
~ grade. Openings may be equipped with screens, louvers, or other coverings or
I devices provided that they permit the autanatic entry and exit of floodwaters.
~
' Section 4. Delete the following section of the Village of North
;!Palm Beach Code.
Section 12.5-46.
• Section 12.5-47.
Section 5. Effective date. This Ordinance shall take effect
I
immediately upon passage.
PLACID ON FIRST READING THIS 11th DAY OF DECEMBER , 1986.
PLACID ON SECOND, FINAL READING AND PASSID THIS 8th DAY OF
JANUARY 1987•
j
,~
~ R
(Village Seal)
,~, ~~~%~,~.r_e ~ e
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