Resolution 243-20151
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i 11"INFAT 1011A.1011,00
WHEREAS, Monroe County is currently a participating community in the National
Flood Insurance Program (NFIP) and is working on internal County policies to improve upon its
interpretation of NFIP regulations; and
WHEREAS, Monroe County desires to become eligible to enter FEMA's Community
Rating System (CRS); and
WHEREAS, Monroe County Code Section 122-2(c), in part, requires that in interpreting
other provisions of this chapter, the building official shall be guided by the current edition of
FEMA's 44 CFR, and FEMA's interpretive letters, policy statements and technical bulletins as
adopted by resolution from time to time by the board of county commissioners;
WO Jj I Jj I Q3 0) C I DIP, 4
M11 20 UNI RM 30011JON *A W PREA I I
Section 1. Pursuant to Monroe County Code Section 122-2(c), the Board hereby adopts
Monroe County "Floodproofing Non-Residential Structures: Permitting and Inspection
Requirements Policy" dated October 1, 2015, A copy of which is attached hereto.
Section 2. The Clerk of the Board is hereby directed to forward one (1) certified copy of
this Resolution ♦ the Building Department.
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PASSED AND ADOPTED by the Board of County Commissioners of Monroe Counti
Florida, at a regular meeting held • the 16 1h • September, 2015.
Mayor Danny L. Kolhage Yes
.... . .... . . .......
Mayorpro tem Heather Carruthers _It_a__
Commissioner Sylvia Murphy Y es
................................................................
Commissioner Geor+-
• • David Rice y as .................................
.&#AAF OF C011PITT MW-J
OF MONROE COUNTY, FLORIDA
BY:
MayoWanrkLt. Kolhage
qb-ftts Xy) MONROE COUNTY ATTORNEY
ROVED Alf FORM;
STEVENT. WILLIAMS
AS'.','�!S7,`,NTr TYATTORNEY
Date P
--e2azfz�r_
County It f Monroe
Building Department
Murray E. Nelson Government Center
102050 Overseas Highway
Key Largo, Florida 33037
Voice: (305) 853-8800
FAX: (305) 853-8818
Board of Couniy Co mmissioners
Mayor Danny L. Kolhage, Dist. I
Mayor Pro Tern Heather Carruthers, Dist. 3
George Neugent, Dist. 2
David Rice, Dist. 4
Sylvia Murphy, Dist. 5
We strive to be caring, professional, and fair.
Date: October 1, 2015
•
Em
From: Wes Maltby, Interim Monroe County Building Official
Re: Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Policy
Regulatory References: The following are useful excerpts from directly relevant floodproofing
regulations. They are not intended as all-encompassing reproductions of these regulations. In all
cases, the original regulations should be consulted.
05
Section 122-2 (c)
In interpreting other provisions of this chapter, the building official shall be guided by the current
edition of FEMA's 44 CFR, and FEMA's interpretive letters, policy statements and technical bulletins
as adopted by resolution from time to time by the board of county commissioners.
Section 122-3(e)
Within 21 calendar days of establishment of the lowest floor elevation, or upon placement of the lowest
horizontal structural members of the lowest floor, whichever is applicable, it shall be the duty of the
permit holder to submit to the building official a certification of the elevation of the lowest floor within
A zones or the lowest portion of the lowest horizontal structural members of the lowest floor within V
zones, whichever is applicable, as built in relation to mean sea level. Such certification shall be
prepared by or under the direct supervision of a registered land surveyor or professional engineer and
certified by the same. When floodproofing is used for a building within A zones, the certification shall
be prepared by or under the direct supervision of a professional engineer or architect and certified by
same. Any work done within the 21 -day period and prior to submission of the certification shall be at
the permit holder's risk. The building official shall review the floor elevation survey data submitted.
Deficiencies detected by such review shall be corrected by the permit holder immediately and prior to
Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Page 1 of 6
further progressive work being permitted to proceed. Failure to submit the survey or failure to make the
corrections required hereby shall be causes to issue a stop-work order for the project.
New construction and substantial improvements of any commercial, industrial or other nonresidential
structures within zone AE on the community's flood insurance rate map (FIRM) shall 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. Elevating above
base flood elevation may decrease the cost of flood insurance. Where a nonresidential structure is
intended to be made watertight below the base flood level, 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 for meeting the applicable provisions contained herein. A record of such floodproofing
certification which shall include the specific elevation (in relation to mean sea level) to which such
structures are floodproofed shall be provided to the building department. Wet floodproofing is not
acceptable. New construction or cumulative substantial improvements of any commercial, industrial or
other nonresidential structures within zones V1-30, VE or V shall have the bottom of the lowest
horizontal structural member of the lowest floor, elevated to or above the base flood elevation.
2014 Florida Building Code
1.3. For dry floodproofed nonresidential buildings, construction documents shall
include a statement that the dry floodproofing is designed in accordance with
ASCE 24.
Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Page 2 of 6
I VMR�" �jiw
' See Table 1-1 for structure category descriptions.
b Wet or dry floodproofing shall extend to the same level.
' Dry floodproofing of residential buildings and residential and residential portions of mixed-use buildings shall
not be permitted.
6.1 Scope
This section addresses design and construction requirements for floodproofing new construction and
substantial improvements in flood hazard areas.
Design of floodproofing measures shall take into consideration and account for the flood loads and
combination of loads in Section 1.6, and for nature of flood-related hazards; frequency, depth, and
duration of flooding; rate of floodwater rise and fall; floodwater temperature; soil characteristics;
flood-borne contaminants and debris: flood warning time; access to and from floodproofed areas;
structure occupancy and use; and functional dependence.
6.2.1 Dry Flood
proofmg Limitations;
Dry floodproofing of nonresidential structures and nonresidential areas of mixed-use structures shall
not be allowed unless such structures are located outside of High Risk Flood Hazard Areas, Coastal
High Hazard Areas, and Coastal A Zones. Dry floodproofing of residential structures or residential
areas of mixed-use structures shall not be permitted.
Dry floodproofing shall be limited to the following:
1. Where flood velocities adjacent to the structure are less than or equal to 5 Mee during the
design flood; and
2. If human intervention is proposed, where conformance with the limitations of Section 6.2.3
is provided.
Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Page 3 of 6
.6.2.3 Limits on Human Intervention:
Dry floodproofing measures that require human intervention to activate or implement prior to or during
a flood shall be permitted only when all of the following conditions are satisfied:
1. The flood warning time (alerting potential flood victims of pending flood situation) shall be a
minimum of 12 hours, unless the community operates a flood warning system and implements
an emergency plan to ensure safe evacuation of flood hazard areas, in which case human
intervention is allowed only if the community can provide a minimum flood warning time equal
to or longer than the cumulative
a. time to notify person(s) responsible for installation of floodproofing measures, plus
b. time for responsible persons to travel to structure to be floodproofed, plus
c. time to install, activate, or implement tloodproofing measures, plus
d. time to evacuate all occupants from the flood hazard area;
2. All removable shields or covers for openings such as windows, doors, and other openings in
walls shall be designed to resist flood loads specified in Section 1.6; and
3. Where removable shields are to be used, a flood emergency plan shall be approved by the
authority having jurisdiction and shall specify, at a minimum, the following information:
storage location(s) of the shields; the method of installation; conditions activating installation;
maintenance of shields and attachment devices; periodic practice of installing shields; testing
sump pumps and other drainage measures; and inspecting necessary material and equipment to
activate or implement t 1 oodproofing. The flood emergency plan shall be permanently posted in
at least two conspicuous locations within the structure.
Code of Federal Regulations
Title 44, Section 60.3(c)(4)
Provide that where a non-residential structure is intended to be made watertight below the base flood
level, (i) 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 for meeting the applicable
provisions of paragraph (c)(3)(ii) or (c)(8)(ii) of this section, and (ii) a record of such certificates which
includes the specific elevation (in relation to mean sea level) to which such structures are floodproofed
shall be maintained with the official designated by the community under §59.22(a)(9)
FEMA Publications and Technical Bulletins
FEMA P-936 Floodproofing Non-Residential Buildings (2013)
FEMA Technical Bulletin 3-93 Non-Residential Floodproofing — Requirements and Certification
Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Page 4 of 6
Monroe County, following National Flood Insurance Program requirements, has the responsibility to
determine if documents submitted as part of a plan to floodproof a non-residential structure meet the
standards pursuant to Monroe County Land Development Code, Chapter 122 - Floodplain
Management, the Florida Building Code, and FEMA 44 CFR, and together with guidance provide in
FEMA TB 3-93 and FEMA P-936, will implement the following checklist on October 1, 2015 to do so.
_[Ory it 1000 R01-WITTV I � A OTT-WW1
Permitted in AE Zone ONLY JASCE 24]
Construction Drawings,/Documents:
Site plan requirements: flood zone(s), BFE(s) & DFE(s) plotted on plans.
[FBC 107.3.5(1)]
BFE(s) on building cross-section. [FBC Section 1612, 1612.5(1.1) & 107.3.5(8)]
Flood design data (including elevation of floodproofing, specified in ASCE 24 Table 6-1) on
building cross-section, along with finished first Floor (AE-Zones) or lowest horizontal cross-
member of the lowest floor (VE-zones), & height of lowest adjacent grade alongside building.
[FBC 1603.1(5) & 1603.1.7]
Soil/fill adjacent to structure compacted & protected against erosion and scour. [ASCE 24]
Building walls & floors impermeable to passage of water. Flood load calculations required.
[ASCE 24]
List of materials showing those below elevation of floodproofing as specified in ASCE 24
Table 6-1 — not protected by floodproofing — will be resistant to flood damage. [ASCE 24]
Utilities: Identification & appropriate height above BFE of attendant utilities/machinery.
[ASCE 24]
Flood panel preliminary designs, showing type of panels and general installation method.
Electrical, if not located within flood roofed protected portion of buildinW.
g-- —
Electric meters above elevation specified in Table 7-1. [ASCE 24]
Disconnect switches circuit breakers above elevation specified in Table 7-1. [ASCE 24]
Maximum 120V voltage below elevation specified in Table 7-1. [ASCE 24]
Submersible-type wiring/conduits/cables/switches/receptacles/fixtures. [ASCE 24]
Powered from common distribution panel above and accessible from above elevation
specified in Table 7-1. [ASCE 24]
Sewerage backflow prevention for all sanitation connections below the elevation in Table 7.1.
[ASCE 24]
Statement that dry floodproofing is designed in accordance with ASCE 24 & ASCE 7,
[FBC 1612.5(1.3) & ASCE 24]
Floodproofing Non-Residential Structures: Permitting and Inspection Requirements Page 5 of (4
11. Under Construction Phase
21 Day/Building Under Construction Elevation Certificate.
[Monroe County Land Development Code 122-3(e)]
1 1", '' �f
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