HomeMy WebLinkAbout1986-21ORDINANCE NO. 86- 21
AN ORDINANCE OF THE BOARD OF COUNTY COMMISSIONERS OF
INDIAN RIVER. COUNTY, FLORIDA ESTABLISHING A COASTAL
CONSTRUCTION BUILDING ZONE BOUNDARY 5,000 FEET LANDWARD
OF THE COASTAL CONSTRUCTION CONTROL LINE LOCATED IN THE
UNINCORPORATED PORTION OF THE BARRIER ISLAND IN INDIAN
RIVER COUNTY, FLORIDA, ESTABLISHING MINIMUM STANDARDS
FOR THE DESIGN AND CONSTRUCTION OF BUILDINGS AND
STRUCTURES ON, THE COASTAL •BARRIER ISLAND .AND IN THE
COASTAL BUILDINGY ZONE; PROVIDING FOR INCORPORATION IN
CODE, SEVERABILITY AND EFFECTIVE DATE.
WHEREAS, it `is the express intent of the Florida
Legislature and of the Board of County Commissioners of Indian
River County that the sensitive portions of the coastal area shall
be managed through .the imposition of strict construction
standards; and
WHEREAS, the Coastal Zone Protection Act of 1985 [Sections
161.52-161.58, Florida Statutes (1985)] requires all local
governments with jurisdictions fronting the Gulf of Mexico,
Atlantic Ocean, Florida Bay, or Straits of Florida to establish
certain minimum construction standards applicable to the "Coastal
Building Zone" and the coastal barrier islands; and
WHEREAS, within this designated zone increased minimum
standards for construction of major habitable structures will
apply:
NOW, THEREFORE BE IT ORDAINED BY INDIAN RIVER COUNTY BOARD
OF COUNTY COMMISSIONERS that:
The provisions contained herein shall constitute the Coastal
Construction Code for construction within the coastal building
zone in Indian River County and shall be referred to as the
"Coastal Code."
The Board of County Commissioners has authority to
adopt this ordinance through its general non -charter county powers
pursuant to. Article VIII of the Florida Constitution and Chapters
125, 161, 163, 252.38, and 380 of the Florida Statutes, and all
other applicable laws of the State of Florida.
The purpose of the Coastal Code is to provide minimum
standards for the design and construction of buildings and
structures other than coastal protective structures and to reduce
the harmful effects of hurricanes and other natural disasters
occurring along the coastal areas of Indian River County. The
Coastal Code is site specific to the coastal building zone as
defined herein and is not applicable to other locations. In the
event of a conflict between this Article and other articles or
chapters of this Code, the requirements resulting in more
restrictive design shall apply. No provisions in this Article
shall be construed to permit any construction in any area
prohibited by local city, county or state regulation.
SECTION 4.
The boundary of the coastal building zone shall be
described as:
ALL THAT PORTION OF THE UPLANDS OF INDIAN RIVER COUNTY, FLORIDA
LYING 51000 FEET WESTWARD OF THE FOLLOWING DESCRIBED LINE.
DESCRIPTION OF THE COASTAL CONSTRUCTION CONTROL LINE (CCCL) IS
ESTABLISHED IN COMPLIANCE WITH SECTION 161.053 OF THE FLORIDA
STATUTES, SAID CONTROL LINE LYING ALONG THE ATLANTIC COAST FROM
THE MEAN HIGH WATER LINE OF THE SOUTHERN BANK OF SEBASTIAN
INLET SOUTH TO THE INDIAN RIVER AND ST. LUCIE COUNTY LINE.
SAID COASTAL CONSTRUCTION CONTROL LINE IS RELATED TO A SERIES
OF "PERMANENT REFERENCE MONUMENTS" (P.R.M.) DESIGNATED AND
HEREINAFTER REFERRED TO- AS "88-78-A01 THROUGH 88-78-A38",
"94-77-A40 AND 94-77-A39" FOR MONUMENTS ESTABLISHED BY THE
DEPARTMENT OF NATURAL RESOURCES, STATE OF FLORIDA OR REFERRED
TO BY STATION NAME FOR MONUMENTS ESTABLISHED BY THE NATIONAL
GEODETIC SURVEY (N.G.S.) OR BY THE U.S. CORPS OF ENGINEERS
(U.S.C.E.).
COMMENCE AT P.R.M. 88-78-A04, THENCE N61°54'34"E A DISTANCE OF
92.937 FEET TO THE POINT OF BEGINNING; THENCE N25°48'35"W TO
THE POINT OF INTERSECTION WITH THE MEAN HIGH WATER LINE OF THE
SOUTHERN BANK OF SEBASTIAN INLET; SAID POINT BEING THE
NORTHERLY TERMINUS OF THE COASTAL CONSTRUCTION CONTROL LINE FOR
INDIAN RIVER COUNTY, THENCE RETURN ALONG THE SAME COURSE TO
THE POINT OF BEGINNING;
THENCE S25048'35"E A DISTANCE OF 985.09 FEET TO A POINT,
THENCE-S26024'56"E A DISTANCE OF 972.65 FEET TO A POINT,
THENCE S26009'5411E A DISTANCE OF 992.01 FEET TO A POINT,
THENCE S26015'53"E A DISTANCE OF 965.73 FEET TO A POINT,
THENCE S26027'40"E A DISTANCE OF 1044.65 FEET TO A POINT, SAID
POINT BEING N13003'41"E A DISTANCE OF 364.721 FEET FROM P.R.M.
88-78-AO5.
THENCE S26025'29"E A DISTANCE OF '942.15 FEET TO A POINT,
THENCE S26001'12"E A DISTANCE OF 1087.25 FEET TO A POINT,
THENCE S25025'04"E A DISTANCE OF 923.32 FEET TO A POINT,
THENCE S25038'32"E A DISTANCE OF 1080.35 FEET TO A POINT,
THENCE S25049'46"E A DISTANCE OF 1065.83 FEET TO A POINT, SAID
POINT BEING N88002'27"E A DISTANCE OF 238.599 FEET FROM P.R.M.
88-78-A06.
THENCE S25033'52"E A DISTANCE OF 828.20 FEET TO A POINT,
THENCE S24053'45"E A DISTANCE OF 998.98 FEET TO A POINT,
THENCE S25015'38"E A DISTANCE OF 988.05 FEET TO A POINT,
THENCE S24005'55"E A DISTANCE OF 974.13 FEET TO A POINT, SAID
POINT BEING N05058'26"E A DISTANCE OF 239.786 FEET FROM P.R.M.
88-78-A07.
THENCE S23038'48"E A DISTANCE OF 1012.21 FEET TO A POINT,
THENCE S24038'11"E A DISTANCE OF 976.75 FEET TO A POINT,
THENCE S26°20'20"E A DISTANCE OF 968.57 FEET TO A POINT,
THENCE S26000'58"E A DISTANCE OF 1033.56 FEET TO A POINT, SAID
POINT BEING N47026124"E A DISTANCE OF 675.967 FEET FROM P.R.M.
88-78-A08.
THENCE S23038'46"E A DISTANCE OF 955.08 FEET TO A POINT,
THENCE S22043'22"E A DISTANCE OF 989.02 FEET TO A POINT,
THENCE S26011'35"E A DISTANCE OF 1019.91 FEET TO A POINT,
THENCE S25024'59"E A DISTANCE OF 1028.84 FEET TO A POINT,
THENCE S25025'02"E A DISTANCE OF 995.08 FEET TO A POINT, SAID
POINT BEING N11046'54"E A DISTANCE OF 712.224 FEET FROM P.R.M.
88-78-A09.
THENCE S25019'37"E A DISTANCE OF 1118.89 FEET TO A POINT,
THENCE S26058'18"E A DISTANCE OF 966.74 FEET TO A POINT,
THENCE S28005'39"E A DISTANCE OF 755.47 FEET TO A POINT,
THENCE S28043'55"E A DISTANCE•OF 1046.03 FEET TO A POINT,
THENCE S28012'23"E A DISTANCE OF 956.49 FEET TO A POINT,
THENCE S27002'48"E A DISTANCE OF 1019.16 FEET TO A POINT, SAID
POINT'BEING N24057'03"E A DISTANCE OF 604.425 FEET FROM P.R.M.
88-78-A10.
THENCE S26002'34"E A DISTANCE OF 936.46 FEET TO A POINT,
THENCE S25055'08"E A DISTANCE OF 959.22 FEET TO A POINT,
THENCE S24050'53"E A DISTANCE OF 990.21 FEET TO A POINT,
THENCE S24024'27"E A DISTANCE OF 961.15 FEET TO A POINT,
THENCE S24006'30"E A DISTANCE OF 1054.60 FEET TO A POINT, SAID
POINT BEING S70°56'11"E A DISTANCE OF 705.700 FEET FROM P.R.M.
88-78-All.
THENCE'S23043'13"E A DISTANCE OF - 886.39 FEET TO A POINT,
THENCE S24046'24"E A DISTANCE OF 958.21 FEET TO A•POINT,
THENCE S23027'45"E A DISTANCE OF 950.89 FEET TO A.-POINT, SAID
POINT 'BEING N53007'36"E A DISTANCE OF 512.466 FEET FROM P.R.M.
88-78-Al2.
THENCE S24009'25"E A DISTANCE OF 989.38 FEET TO A POINT,
THENCE S24009'1711E A DISTANCE OF 1016.49 FEET TO A POINT,
THENCE S26014'00"E A DISTANCE OF°1064,.85 FEET TO A POINT, SAID
POINT BEING S75006'33"E A DISTANCE OF 673.213 FEET FROM.P.R'.M,
88-78-A13.
THENCE S32011'26"E A DISTANCE OF 1001.21 FEET TO A POINT,
THENCE S28019'24"E A DISTANCE OF 1048.28 FEET TO A POINT,
THENCE S28030'46"E A DISTANCE OF 1001.26 FEET TO A POINT, SAID
POINT BEING S77019'32"E A DISTANCE OF 557.656 FEET FROM P.R.M.
88-78-A14.
THENCE S26040'17"E A DISTANCE OF 1023.37 FEET TO A POINT,
THENCE S23048'04"E A DISTANCE OF 917.94 FEET TO-A POINT,
THENCE S2302528"E A DISTANCE OF 974.08 FEET TO A POINT,
THENCE S26015'09"E A-DISTANCE OF 982.47 FEET TO A POINT,
THENCE S23044'18"E A DISTANCE OF 994.80 FEET TO A POINT, SAID
POINT BEING N74030'52"E A DISTANCE OF 405.713 FEET FROM P.R.M.
88-78-A15.
THENCE S20029'48"E A DISTANCE OF 1034.00 FEET TO A POINT,
THENCE S19049'21"E A DISTANCE OF 1020.12 FEET TO A POINT,
THENCE S18010'31"E A DISTANCE OF 984.78 FEET TO A POINT,
THENCE S17012'19"E A DISTANCE OF 1039.34 FEET TO A POINT, SAID
POINT BEING N53037'59"E A DISTANCE OF 621.574 FEET FROM P.R.M.
88-78-A16.
THENCE S11032'42"E A DISTANCE OF 1008.33 FEET TO A POINT,
THENCE S13014'48"E A DISTANCE OF 970018 FEET TO A POINT,
THENCE S15031'12"E A DISTANCE OF 995.23 FEET TO A POINT,
THENCE S17048'16"E A DISTANCE OF 928.62 FEET TO A POINT, SAID
POINT BEING N28045'45"E A DISTANCE OF 531.851 FEET FROM P.R.M.
88-78-A17.
THENCE S14037'08"E A DISTANCE OF 986.88 FEET TO A POINT,
THENCE S15006'52"E A DISTANCE OF 989.92 FEET TO A POINT,
THENCE S18050'42"E A DISTANCE OF 1157.11 FEET TO A POINT,_
THENCE S21018'23"E A DISTANCE OF 962.27 FEET TO A POINT,
THENCE S16051'47"E A DISTANCE OF 1004.65 FEET TO A POINT, SAID
POINT BEING S70034'11"E A DISTANCE OF 765.357 FEET FROM P.R.M.
88-78-A18.
THENCE S1504231"E A DISTANCE OF 987.77 FEET TO A POINT,
THENCE S16001'30"E A DISTANCE OF 1086.70 FEET TO A POINT, SAID
POINT BEING N70021'42"E A DISTANCE OF 1132.723 FEET FROM P.R.M.
88-78-A19.
THENCE S18046'41"E A DISTANCE OF 941.92 FEET TO A POINT,
THENCE S18002'42"E A DISTANCE OF 1026.15 FEET TO A POINT,
THENCE S19048'41"E A DISTANCE OF 923.01 FEET TO A POINT,
THENCE S17048'27"E A DISTANCE OF 979.56 FEET TO A POINT,
THENCE S19018'16"E A DISTANCE OF 1137.33 FEET TO A POINT, SAID
POINT BEING N57018'50"E A DISTANCE OF 971.626 FEET FROM P.R.M.
88-78-A20.
THENCE S19053'42"E A DISTANCE OF 1033.94 FEET TO A POINT,
THENCE S13054'00"E A DISTANCE OF 1106.41 FEET TO A POINT,
THENCE S12001'21"E A DISTANCEOF985.29 FEET TO A POINT,
THENCE S16022'57"E A DISTANCE OF 940.87 FEET TO A POINT, SAID
POINT BEING S81000'40"E A DISTANCE OF 850.643 FEET FROM P.R.M.
88-78-A21.
-3-
THENCE S15032'29"E A DISTANCE OF 1067.62 FEET TO A POINT, SAID
POINT BEING N32045'12"E A DISTANCE OF 370.130 FEET FROM P.R.M.
88-78-A22.
THENCE S14046'13"E A DISTANCE OF 1150.53 FEET TO A POINT,
THENCE S17039'15"E A DISTANCE OF 887.84 FEET TO A POINT,
THENCE S18014'52"E A DISTANCE OF 994.54 FEET TO A POINT, SAID
POINT BEING N79010'06"E A DISTANCE OF 310.588 FEET FROM P.R.M.
88-78-A23.
THENCE S10021'07"E A DISTANCE OF 1031.15 FEET TO A POINT, SAID
POINT•BEING S87044'04"E A DISTANCE OF 1042.062 FEET FROM P.R.M.
88-78-A24.
THENCE S11050'19"E A DISTANCE OF- 935.03 FEET TO A POINT,
.THENCE S18013'27"E A DISTANCE OF 1182.35.FEET TO A POINT, SAID
POINT BEING N70045'06"E A DISTANCE OF 1156.120 FEET FROM P.R.M.
88-78-A25.
THENCE S16041'16"E A DISTANCE OF 893.43 FEET TO A POINT,
THENCE S14020'12"E A DISTANCE OF 979.91 FEET TO A POINT,
THENCE S15000'01"E A DISTANCE OF 947.25 FEET TO A POINT,
THENCE S14032'48"E A DISTANCE OF 1138.03 FEET TO A POINT,
THENCE S15052'55"E A DISTANCE OF 812.35 FEET TO A POINT, SAID
POINT BEING N86028'45"E A DISTANCE OF 2399.437 FEET FROM P.R.M.
88-.78-A26.
THENCE S15034'51."E A DISTANCE OF 1143.01 FEET TO A POINT, SAID
POINT BEING N81031'08"E A DISTANCE OF 2512.615 FEET FROM P.R.M.
88-78-A27.
THENCE-S12035'22"E A DISTANCE OF 821.55 FEET TO A POINT,
THENCE S03032'32"W A DISTANCE OF 1088.24 FEET TO A POINT,
THENCE S01058'19"E A DISTANCE OF 806.10 FEET TO A POINT,
THENCE S06048'14"E A DISTANCE OF. 876.63 FEET TOA POINT, SAID
POINT BEING N77013'29"E A DISTANCE OF 1669.359 FEET FROM P.R.M.
88-78-A28
THENCE S12056'35"E A DISTANCE OF 980.67 FEET TO A POINT,
THENCE S16058'05"E A DISTANCE OF 1076.82 FEET TO A POINT_,
THENCE S20042'52"E A.DISTANCE:OF 973.68 FEET TO A POINT,
THENCE S22033'49"E A DISTANCE OF 1032.52 FEET TO A POINT, SAID
POINT BEING N77018'23"E A DISTANCE OF 1186.041 FEET FROM P.R.M.
88-78-A29.
THENCE S24018'55"E A DISTANCE OF 973.30 FEET TO A POINT,
THENCE S28001'09"E A DISTANCE OF 961.56 FEET TO A POINT, SAID
POINT BEING N58024'51"E A DISTANCE OF 1116.894 FEET FROM P.R.M.
88-78-A30.
THENCE S33041'27"E A DISTANCE OF 1014.93 FEET TO A POINT,
THENCE S37°25'09"E A DISTANCE OF 889.85 FEET TO A POINT,
THENCE S34003'43"E A DISTANCE OF 1063.03 FEET TO A POINT, SAID
POINT BEING N87001'58"E.A DISTANCE OF 1970.248 FEET FROM P.R.M.
88-78-A31.
THENCE S36054'45"E A DISTANCE OF 1094.46 FEET TO A POINT, SAID
POINT BEING N78.046'28"E A DISTANCE OF 1762.191 FEET FROM P.R.M.
88-78-A32.
THENCE S37019'51"E A DISTANCE OF 968.06 FEET TO A POINT,
THENCE S32022'40"E A DISTANCE OF 1000.15 FEET TO A POINT, SAID
POINT BEING N71020'02"E A DISTANCE OF 1241.068 FEET FROM P.R.M.
88-78-A33.
THENCE S28031'38"E A DISTANCE OF 889.'87 FEET TO A POINT, SAID
POINT BEING N48052'18"E A DISTANCE OF 1207.025 FEET FROM P.R.M.
88-78-A34.
THENCE S22044'33"E A DISTANCE OF 1112.43 FEET TO A POINT,
THENCE S18045'29"E A DISTANCE OF 916.54 FEET TO A POINT,
THENCE S11008'45"E A DISTANCE OF 1223.06 FEET TO A POINT,
THENCE S10009'17"E A DISTANCE OF 769.67 FEET TO A POINT, SAID
POINT BEING S81008'42"E A DISTANCE OF 1108.663 FEET FROM P.R.M.
88-78-A35.
THENCE S11016'12"E A DISTANCE OF 826.02 FEET TO A POINT,
.THENCE S1001$'06"E A DISTANCE OF 944.91 FEET TO A POINT, SAID
POINT BEING S81024'29"E A DISTANCE 1183.360 FEET FROM P.R.M.
88-78-A36.
THENCE S11036'24"E A DISTANCE OF 1067.16 FEET TO A POINT, SAID
POINT BEING S87038'35"E A DISTANCE OF 985.112 FEET FROM P.R.M.
88-78-A37.
THENCE S10039'02"E A DISTANCE OF '917.23 FEET TO A POINT,
THENCE S11009'24"E A DISTANCE OF 965.16 FEET TO A POINT, SAID
POINT BEING S86036'06"E A DISTANCE OF 948.700
88-78-A38.
THENCE S09020'49"E A DISTANCE OF 1172.90 FEET
POINT BEING S82044'03"E A DISTANCE OF 836.104
RIOMAR 2,
THENCE S10052'29"E A DISTANCE OF 698.17 FEET
THENCE S11021'40"E A DISTANCE OF 1323.24 FEET
POINT BEING N47000'11"E A DISTANCE OF 801.625
94-77-A40.
THENCE S14021'44"E A DISTANCE OF 899.82 FEET
THENCE S15005'00"E A DISTANCE OF 917.94 FEET
THENCE S14058'11"E A DISTANCE OF 1101.11 FEET
POINT BEING N62013'11" A DISTANCE OF 479.316
94-77-A39.
THENCE S16000'16"E A DISTANCE OF 970.48 FEET
POINT BEING S44016'16"E A DISTANCE OF 990.810
94-77-A39.
FEET FROM P.R.M.
TO A POINT, SAID
FEET FROM N.G.S.
TO A POINT,
TO A POINT, SAID
FEET FROM P.R.M.
TO A POINT,
TO A POINT,
TO A POINT, SAID
FEET FROM P.R.M.
TO A POINT, SAID
FEET FROM P.R.M.
THENCE S16033'15"E TO THE POINT OF INTERSECTION WITH THE.INDIAN
RIVER AND ST. LUCIE COUNTY.LINE, SAID POINT BEING THE SOUTHERLY
TERMINUS OF THE COASTAL CONSTRUCTION CONTROL LINE FOR INDIAN
RIVER COUNTY,
SECTION 5 - EXISTING:STRUC.TURES
The requirements of this Chapter shall not apply to existing
structures, structures under construction, or structures for which
a valid and unexpired building permit was issued prior to the
adoption of the Coastal Code.
The requirements of this Coastal Code shall apply to the
following types of construction in the coastal building zone in
Indian River County:
(a) The new construction of, or improvement to major
structures, nonhabitable major structures, and minor structures as
defined herein.
(b) Construction which would change or alter the
character of the shoreline (e.g. excavation, grading, paving).
The Coastal Code does not apply to minor work in the nature of
normal beach cleaning or debris removal.
For structures located. partially_ in the coastal building
zone, the requirements of the Coastal Code shall apply to the
entire structure.
Structures or construction extending seaward of the mean high
waterline which are regulated by 'Section 161.041, Florida Statutes
(e.g., groins, jetties, moles, breakwaters, seawalls, revetments,
beach nourishment, inlet dredging, etc.) are specifically exempt
from the provisions of this Chapter. In addition, the Coastal
Code does not apply to piers, pipelines, or outfalls which are
regulated pursuant to the provisions of Section 161.053,, Florida
Statutes.
Applications for building permits for -all construction in the
coastal building zone shall be certified by an architect or
professional engineer registered in the State of Florida except
single-family residences and accessory structures of normal or
usual design as determined .by the Building Official. Such
certification shall state that the design plans and specifications
for the construction are in compliance with the criteria
established by this Coastal Code.
The following terms are defined for general use in the
Coastal Code:
(a) "BEACH" means the zone of unconsolidated material
that extends landward from the mean low waterline to the place
where there is marked change in material or physiographic form, or
to the line..of permanent vegetation, usually the effective limit
of storm waves. "BEACH" is alternatively termed "SHORE."
(b) "BREAKAWAY BUILDING WALL" OR "FRANGIBLE BUILDING
WALL" means a partition independent of supporting structural
members that will withstand design wind forces, but will fail
under hydrostatic, wave, and run-up forces associated with the
design storm surge. Under such conditions, the wall shall fail in
amanner such that it breaks up into components that will minimize
the potential for damage to life or adjacent property.
(c) "BUILDING SUPPORT STRUCTURE,'means any structure
which supports floor, wall or column loads, and transmits them to
the foundation. The term shall include beams, grade beams, or
joists, and- includes the lowest horizontal structural member
exclusive of piles, columns, or footings.
(d) "COASTAL BARRIER ISLAND" shall be defined as a
geological feature which is completely surrounded by marine waters
and fronts the Atlantic Ocean.
(e) "COASTAL BUILDING ZONE shall mean the land area as
measured 5000 feet landward from the "coastal construction control
line established pursuant to Section 161.053, Florida Statutes.
(f) "COLUMN ACTION" means the potential elastic
instability in piles or columns resulting in axial or lateral
bending of the member due to compressive stress.
(g) "CONSTRUCTION" means the carrying out of any
building, clearing, filling, or excavation or the making of any
material change. in the size or use of any structure or the
appearance of any land, other than coastal protective structures
and beach fill/nourishment. When appropriate to the context,
"construction" refers to the act of construction or the result of
construction.
(h) "DESIGN 'STORM" means the 10.0 -year storm event
including storm surge equivalent to the base flood elevation as
determined by the Federal Emergency Management Agency.
(i) "DUNE" means a mound or ridge of loose sediments,
usually sand -sized, lying landward of the beach, and deposited by
natural or artificial means.
(j) "MAJOR STRUCTURE" includes but is not limited to
residential buildings including mobile homes, commercial,
institutional, industrial, and other construction having the
potential for substantial impact on coastal zones.
(k) "MEAN HIGH WATERLINE" means the intersection of the
tidal plane of mean high water with the shore. Mean high water is
the average height of high waters over a 19 -year period. (See
Section 177.27(15), F.S.)
(1) "MINOR STRUCTURE" includes but is not limited to
pile -supported, elevated dune and beach walkover structures; beach
access ramps and walkways; stairways; pile -supported, elevated
viewing platforms, gazebos, and boardwalks; lifeguard support
stands; public and private bathhouses; sidewalks, driveways,
parking areas, shuffleboard courts, tennis courts, handball
courts, racquetball courts, and other uncovered paved areas, earth
retaining walls; sand fences, privacy fences, ornamental walls,
ornamental garden structures, aviaries, and other ornamental
construction. It shall be characteristic of minor structures that
they are considered to be expendable under design wind, wave, and
storm forces.
-6-
W "NONHABITABLE MAJOR STRUCTURE" includes but is not
limited to swimming pools; parking garages; pipelines, piers;
canals, lakes, ditches, water and sewage treatment plants,
electrical power plants; transmission and distribution lines,
transformer pads, vaults, and substations, roads, bridges,
streets, and Highways; underground storage tanks; communications
buildings and towers, flagpoles and signs over 15 feet in height.
(n) "NGVD" mean National Geodetic Vertical Datum - a
geodetic datum* established by the National Ocean Service and
frequently'referred to as the 1929 Mean -Sea Level Datum.
Construction within the -coastal building zone shall meet the
requirements of this Chapter. All structures shall be designed so
as to minimize damage to life, property, and the natural
environment. Assistance in determining the design parameters to
minimize such damage may be found in the reference documents
listed in Section 16 entitled "References."
All major structures shall be anchored to their foundations
in such a manner as to prevent flotation, collapse, or lateral
displacement.
Foundation design and construction shall consider all
anticipated loads resulting from,design storm conditions,including
wave, hydrodynamic, hydrostatic, and wind loads acting
simultaneously with dead loads. Erosion computations for
foundation design shall account for all vertical and lateral
erosion and scour -producing forces, including localized scour due
to the presence of structural components.
1. Pile Foundations - shall be required for buildings
located in Federal Emergency Management Agency
Flood Insurance Rage Map "V" (velocity) zones.
(A) Pile dimensions, spacing, and embedment shall be
designed consistent with the requirements of the
site, taking into account all vertical, lateral,
erosion and scour -producing forces.
(B) Piles shall be driven to a penetration which
achieves adequate bearing capacity taking into
consideration the anticipated loss of soil above
the design grade.
(C) In addition to the normal foundation analysis, the
pile foundation analysis shall consider piles in
column action, where appropriate, from the bottom
of the support structure to the design grade.
(D) Consideration shall also be given to the degree of
exposure to wave attack and the resulting impact
loads on lateral or diagonal bracing between piles.
2. Monolithic Foundations - may be permitted in Federal
Emergency Management Agency Flood Insurance Rate
Map "A" or "B" Zones.
(A) Monolithic foundations may be used if soil
conditions permit and if located at an elevation
which minimizes their effect on the beach and
adjacent properties. Due consideration shall be
given to their vulnerability to erosion under
design storm conditions.
(B) In.the event that a monolithic foundation is used,
the maximum elevation of the top of the slab is to
be below the design scour depth (See Chapter 5.28,
Shore Protection Manual, U.S. Army Corps of
Engineers, 4th Edition, 1984) unless positive
methods are provided to prevent scour.
(C) Other types of spread footings such as running
footers or pads may be permitted when positive
methods are provided to prevent scour.
No substantial walls or partitions shall be constructed
below the level of the first finished floor. This does not
preclude the construction of:
1. Stairways,
2. Shearwalls essentially perpendicular to breaking waves,
3. Shearwalls essentially parallel to breaking waves which
do not exceed a maximum of 20% of the building length;
4. Wind or sand screens constructed of fabric or wire mesh,
5. Light open lattice partitions with individual wooden
lattice strips no greater than 3/4" thick or 3" wide;
6. Elevator shafts,
7. Breakaway or frangible building walls, or
8. Substantial building walls constructed above the wave
action and storm surge expected under design storm conditions.
(c) Building and Floor Elevations
The minimum elevation for the underside of the building
support .structure (excluding foundation) shall be above the
elevation of the design breaking wave crests or wave uprush
superimposed on the storm surge with dynamic wave set up expected
under design storm conditions. The elevation of the storm surge
with dynamic wave set up shall be the elevation established by the
Indian River County Stormwater Management and Flood Protection
Ordinance.
(d) Erosion and Design Grade
The elevation of the soil surface to be used in the design of
foundations, calculation of pile reactions, and bearing capacities
shall not be greater than that which would result from the erosion
reasonably anticipated. as a result of design storm conditions.
Calculation of the design grade shall take into account localized
scour due to the presence of structural components. Erosion
computations for foundation design shall consider all vertical and
lateral erosion and scour -producing forces.
(e) Wave Force Desi
1. Calculations for wave forces resulting' -from design storm
conditions are building foundations 'and superstructures may be
based upon the minimum criteria and methods prescribed in the
Naval Facilities Engineering Command •Design Manual, NAVFAC DM -26,
U.S. Department of Navy, Shore: Protection Manual, U.S. Department
of the Army Corps of Engineers; U.S. Department of the Army
Coastal Engineering Research Center Technical Papers and Reports;
the Technical and Design Memoranda of the Division of Beaches and
Shores, Florida Department of Natural Resources; or other
professionally recognized methodologies which produce equivalent
design criteria.
2. Breaking, broken, and nonbreaking waves shall be
considered as they may be applicable. Design wave loading
analysis shall consider vertical uplift pressures and all lateral
pressures to include impact as well as dynamic loading and the
harmonic intensification resulting from repetitive waves.
(f) Hydrostatic Loads
Calculations for hydrostatic loads shall consider the
maximum water pressure resulting from a fully peaked, breaking
wave superimposed upon the design storm surge with dynamic wave
set up. Both free and hydrostatic loads shall be considered.
Hydrostatic loads which are confined shall be determined using the
maximum elevation to which the confined water would freely rise if
unconfined. Vertical hydrostatic loads shall be considered both
vertically downward.and upward on horizontal or inclined surfaces
of major structures (e.g. floors, slabs, roofs, walls). Lateral
hydrostatic loads shall be considered as forces acting
horizontally above and below grade on vertical or inclined
surfaces. Hydrostatic loads on irregular or curved geometric
surfaces shall be determined by considering the separate vertical
and horizontal components acting simultaneously under the
distribution of the hydrostatic pressures.
(g) Hydrodynamic Loads
Hydrodynamic loads shall consider the maximum water
pressures resulting from the motion of the water mass associated
with the design storm. Full intensity loading shall be applied on
all structural surfaces above the design grade which would affect
the flow velocities.
(h) Design Conditions - General
1. Foundations for all major structures shall be designed
for the horizontal and vertical pressures generated by wave forces
between the elevation of the design breaking wave crests or wave
uprush superimposed upon the storm surge and the- stable soil
elevation of the site.
2. All major structures shall be designed to withstand 140
mph windspeeds. Horizontal wind velocity pressures shall not be
less than the values given below:
BASIC WIND VELOCITY DESIGN PRESSURE
(Pounds Per Square Foot)
Standard Building Code*/
Height Pressure
feet (psf )
0-30 41
31-50 54
51-100 65
101-200 79
201-300 92
301-400 101
401-500 109
501-800 121
801-1000 133
over 1000 137
*/ The above table is based upon the formula P=.00256xV2x[H/30]
277, where P = pressure in pounds/square foot
V = 140 MPH
H = height above grade in feet
3. Appropriate shape factors shall be applied for resistance
against overturning and uplift as required elsewhere in this Code.
Internal pressures on internal walls, ceilings, and floors
resulting from damaged windows or doors shall also be considered
in the design unless the specified windows and doors have been
tested by an approved testing agencyand have been shown to be
capable of withstanding the design pressures required herein.
4. Mobile homes shall conform to the Federal Mobile Home
Construction and Safety Standards of the Uniform Standards Code
ANSI book 1A-119.1, pursuant to §320.823, Florida Statutes, in
addition to the other requirements contained in this Chapter.
Nonhabitable major structures need not meet the specific
structural requirements of Section 10, except that they shall be
designed to produce the minimum adverse impact on the beach and
dune system and shall comply with the applicable standards of
construction found all
in this Code. All sewage treatment
and public water supply systems shall be flood -proofed to prevent
infiltration of surface water anticipated under design storm
conditions. Underground utilities., excluding.pad transformers and
vaults, shall be flood -proofed to prevent infiltration of surface
water expected under design storm conditions or shall otherwise be
designed to function when submerged under such storm conditions.
SECTION 13 - STRUCTURAL REQUIREMENTS FOR MINOR STRUCTURES
Minor structures need not meet the specific structural
requirements of Section 41.38, except that they shall be designed
to produce the minimum adverse impact on the beach and dune system
and shall comply with the applicable standards of construction
found elsewhere in this Code.
Construction, except for elevated walkways, lifeguard support
stands, piers, beach access ramps, gazebos, etc., shall be located
a sufficient distance landward of the beach to permit natural
shoreline fluctuations and to preserve dune stability.
Construction, including excavation, may occur to the extent that
the natural storm buffering and protection capability of the dune
is not diminished.
Where the public has established an accessway through private
lands to lands seaward of the mean high tide or waterline by
prescription, prescriptive easement, or any other legal means,
development or construction shall not interfere with such right of
access unless a comparable alternative accessway is provided. The
developer shall have the right to improve, consolidate, or
relocate such public accessways so long as they are:
(a) Of substantially similar quality and convenience to
the public;
(b) Approved by the local government; and
(c) Consistent with the coastal management element of
the local comprehensive plan adopted pursuant to
Section 163.3178, Florida Statutes.
Assistance in determining the design parameters and
methodologies necessary to comply with the requirements of this
Chapter may be obtained from:
Shore Protection Manual, U.S. Army Corps of Engineers, 4th
Edition*, 1984.
U.S. Department of the Army; Coastal Engineering Research
Center's Technical Papers and Reports.
Florida Department of Natural Resources, Division of Beaches
and Shores Technical and Design Memoranda,
Naval Facilities Engineering Command Design Manual, NAVFAC
DM -26, U.S. Department.of the Navy.
This ordinance shall be incorporated into the Code of
Ordinances of Indian River County and the word "ordinance" may be
changed to "section," "article," or other appropriate word and the
sections of this ordinance may be renumbered or relettered to
accomplish such purposes.
If any Section., or if�any sentence, paragraph, phrase, or
word of this ordinance is for any reason held to be
unconstitutional, inoperative, or void, such holding shall not
affect the remaining portions of this ordinance, and it shall be
construed to have been the legislative intent to pass the
ordinance without such unconstitutional, invalid or inoperative
part.
SECTION 19 - EFFECTIVE DATE
This ordinance shall become effective upon receipt from --
the Secretary of State of the State of Florida of official
acknowledgment that this ordinance has been filed with the
Department of State.
Approved and adopted by -the Board of County
Commissioners of Indian River County, Florida, on this 26 day
of February , 1986.
BOARD OF COUNTY COMMISSIONERS OF
INDIAN RIVER COUNTY, FLORIDA
By. / C
DON C. SC LOCK: JR., hairman
Acknowledgment by the Department of State of the State of Florida,
this 10th day of March Ir 1986.
Effective date: Acknowledgment from the Department of State
received on this 17th day of March , 1986, at10LA.M:/P.M.
and filed in the Office of the Clerk of the Board or" County
Commissioners of Indian River County, Florida.
APPROVED AS TO FORM
AND LEGAL SUFFICIENCY:
BRUCE BARKETT,
Assistant County Attorney
a