Item H04BOARD OF COUNTY COMMISSIONERS
AGENDA ITEM SUMMARY
Meeting bate: September 16, 2015 Department: Building
Bulk Item: Yes X No Staff Contact Person/Phone #: Christine Hurley, 2 89-2517
Ed Koconis, 453-8727
AGENDA ITEM WORDING: Approval of a resolution of the Monroe County Board of County
Commissioners adopting FEMA Technical Bulletin 3 "Non -Residential Floodproofing — Requirements
and Certification" dated April 1993 as required pursuant to Monroe County Code Section 122-2(c).
ITEM BACKGROUND: Chapter 122 of the Monroe County Code "Floodplain Management"
includes rules for interpreting flood hazard issues. The building official shall be guided by the current
edition of FEMA's 44 CFR, andFEMA's interpretive letters, policy statements and technical bulletins
as adopted fiom time to time by the board of county commissioners. FEMA's Technical Bulletins
("bulletins") provide guidance concerning the building performance standards of the National Flood
Insurance Program (NFIP), which are contained in Title 44 of the U.S. Code of Federal Regulations.
The bulletins are intended for use primarily by State and local officials responsible for interpreting and
enforcing NFIP regulations and by members of the development community, such as design
professionals and builders. New bulletins, as well as updates to existing bulletins, are issued
periodically as needed. The bulletins do not create regulations; rather they provide specific guidance
for complying with the minimum requirements of existing NFIP regulations. Adopting these
documents as well as internal County policies would serve to allow the County to not only remain in
the NFIP as stated in Section 122-1(b), but also to move forward with the intent of becoming eligible
to enter FEMA's Community Rating System (CRS). The proposed resolution would adopt FEMA
Technical Bulletin 3 "Non -Residential Floodproofing — Requirements and Certification" dated April
1993 as required pursuant to Monroe County Code Section 122-2(c).
PREVIOUS RELEVANT BOCC ACTION:
January 18, 1994 — BOCC approved Ordinance No. 002-1994 adding the language "as adopted by
resolution from time to time by the Board of County Commissioners" to the rules for interpreting flood
hazard issues.
July 15, 2015 — BOCC rejected proposed ordinance amending Section 122-2(c) and directed staff to
continue proposing resolutions for adoption of both new and amended documents to be used by the
building official for guidance on floodplain flnanagement.
CONTRACT/AGREEMENT CHANGES: N/A
STAFF RECOMMENDATION: Approval
TOTAL COST: N/A INDIRECT COST: N/A BUDGETED: Yes No N/A
PREFERENCE:DIFFERENTIAL OF LOCAL
COST TO COUNTY: N/A SOURCE OF FUNDS:
REVENUE PROD . N/A AMOUNT PER MONTH
APPROVED BY: County Atty X W14 OMB/Purchasing Risk Management _
DOCUMENTATION: Included X Not Required.
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MONROE COUNTY,FLORIDA
MONROE COUNTY 130ARD OF r COMMISSIONERS
RESOLUTION
COUNTYA RESOLUTION OF THE MONROE COUNTY 130ARD OF
fADOPTING FEMA TECHNICAL
"NON-RESIDENTIAL ff ''ff
REQUIREMENTS AND CERTIFICATION" DATED APRIL 1993
AS REQUIRED r rE COUNTY CODE
SECTION
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;
NOW, '' fRESOLVED: BOARD OF r
COMMISSIONERS OF ' f'COUNTY,f; 1
Section 1. Pursuant to Monroe County Code Section 122-2(c), the Board hereby adopts
FEMA Technical Bulletin 3 "Non -Residential Floodproofing — Requirements and Certification"
dated April 1993, 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 to the Building Department.
PASSED AND ADOPTED by the Board of County Commissioners of Monroe County,
Florida, at a regular meeting held on the 16"' of September, 2015.
Mayor Danny L. Kolhage
Mayor pro tein Feather Carruthers
Commissioner Sylvia Murphy
Commissioner George Neugent
Commissioner David Rice
BOARD OF COUNTY COMMISSIONERS
OF MONROE COUNTY, FLORIDA
ME
Mayor Danny L. Kolhage
(SEAL)
ATTEST: AMY HEA'VILIN, CLERK
Deputy Clerk
0-y-A
. lechnical
BulletLn
3 3
Non -Residential Floodproofing — Requirements and
Certification
for Buildings Located in Special Flood Hazard Areas
in accordance with the
National Flood Insurance Program
I-AAPLOYEES
ONLY
T_
L
FEDERAL EMERGENCY MANAGEMENT AGENCY
FEDERAL INSURANCE ADMINISRTATION
FIA-T8-3
4193
M333L =3
This index allows the user to quickly locate key words and subjects in this Technical Bulle-
tin. The Technical Bulletin User's Guide (printed separately) provides references to key
words and subjects throughout the Technical Bulletins. For definitions of selected terms,
Z-1
refer to the Glossary at the end of this bulletin.
23220���
A -zone floodproofing 2
Floodproofing, Emergency Operations Plan, minimum acceptable
Floodproofing, Inspection and Maintenance Plan, minimum acceptable
Floodproofing, recognition of for insurance rating purposes 4
High hazard area, safety and access in
Hydrodynamic forces on floodproofed building 8
Hydrostatic forces on floodproofed building 6
Non-residential floodproofing certificate, how to fill out 10
Any comments on the Technical Bulletins should be directed to:
FEMAXIA
Off -ice of Loss Reduction
Technical Standards Division
500 C St., SW, Room 417
Washington, D.C. 20472
Technical Bulletin 3-93 replaces Technical Bulletin 90-3 (draft) "Non -Residential Floodproofing Certification
Requirements. "
Graphic design based on the Japanese print The Great Wave Off Kanagawa, by Katsushika Hokusai (1760-
1849), Asiatic collection, Museum of Fine Arts, Boston,
TECHNICAL BULLETIN 3-93
Non -Residential Floodproofing — Requirements and Certification
for Buildings Located in Special Flood Hazard Areas
in accordance with the National Flood Insurance Program
Introduction
This bulletin describes design, construction, and planning requirements for the floodproofing of
non-residential buildings under the `National Flood Insurance Program (NFIP) regulations and
how to correctly complete the NFIP's Floodproofing Certificate for Non -Residential Structures
form. For the purposes of this bulletin, floodproofing means making a building watertight,
substantially impermeable to floodwaters.
Before a floodproofed building is designed, numerous planning considerations, including flood
warning time, uses of the building, mode of entry to and exit from the building and the site in
general, floodwater velocities, flood depths, debris impact potential, and flood frequency, must
be addressed to ensure that dry floodproofing will be a viable floodplain management tool.
These critical considerations are discussed within this bulletin.
In the FEMA publication "Floodproofing ofNon-residential Structures," floodproofing is
described as a combination of adjustments and/or additions of features to buildings that eliminate
or reduce the potential for flood damage. Examples of such adjustments and additions include
anchoring of the building to resist flotation, collapse, and lateral movement; installation of
watertight closures for doors and windows, reinforcement of walls to withstand floodwater
pressures and impact forces generated by floating debris; use of membranes and other sealants to
reduce seepage of floodwater through walls and wall penetrations; installation of pumps to
control interior water levels; installation of check valves to prevent the entrance of floodwater or
sewage flows through utilities; and the location of electrical, mechanical, utility, and other
valuable damageable equipment and contents above the expected flood level.
Floodproofing components for an individual building may also include floodwalls, small local-
ized levees, or berms around buildings. However, such components, because they are not part of
the building itself, are generally not credited for the flood insurance rating of a building under
the NFIP and are therefore not detailed within this bulletin.
The NFIP allows a new or substantially improved non-residential building in an A zone (Zone A,
AE, A I-A30, AR, AO, or AH) to have a lowest floor below the base flood elevation (BFE),
provided that the building has been designed, constructed, and certified to be floodproofed and to
meet established criteria. Floodproofing of areas below the BFE in residential buildings is not
permitted under the NFIP. In a Coastal High Hazard Area (Zone V, VE, or V I -V3a), construc-
tion or substantial improvement of a building with a lowest floor elevation below the BFE is not
allowed, regardless of any floodproofing techniques employed.
A Floodproofing Certificate for Non -Residential Structures (FEMA Form 81 -65) has been
developed by FEMA for use in the certification of non-residential floodproofing designs. Be-
cause of the increased potential for significant building damage due to the failure of the
floodproofing system, the NFIP requires a design certification for all floodproofed buildings. In
accordance with Section 60.3(c)(4), communities shall require a correctly completed certificate
(or its equivalent) for every floodproofed building within a Special Flood Hazard Area (SFHA)
and shall maintain the completed certificates on file.
A Floodproofing Certificate for Non -Residential Structures is required for the following types of
buildings (in A zones only):
.Floodproofed non-residential buildings (no residential uses).
.Floodproofed mixed -use buildings that are professionally designed with all residential uses
located above the floodproofing design elevation.
FIFA Regulations
The NFIP regulations that specifically apply to the design of floodproofing for non-residential
buildings are within Section 60.3(c)(3), which states that the community shall:
"Require that all new construction and substantial improvements of non-residential struc-
tures within Zones Al -A3I, AP', and AH on the community's FIRM (i) have the lowest
floor (including basement) elevated to or above the base flood level, or (ii) 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 hydrody-
namic loads and effects of buoyancy. "
Section 60.3(c)(8) further states that the community shall:.
"Require within any AO ,zone on the community's FIRIV that all new construction or
substantial improvements of non-residential structures (i) have the lowest floor (including
basement) elevated above the Highest adjacent grade at least as high as the depth number
specified in feet on the community's FIRM (at least two feet if no depth number is speci-
fied), or (ii) together with attendant utility and sanitary facilities, be completely
floodlproofed to that (base flood) level to meet the floodproofing standard specified in
paragraph 60.3(c) (3) (u).. "
Additionally, Section 60.3(c)(4) requires that any floodproofing design be certified in the follow-
ing manner:
"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 andlor
review structural design, speccations, and plans for the construction, and shall certify
that the design and methods of construction are in accordance with the accepted standards
of practice for meeting the applicable provisions of paragraphs (c)(3)(h) 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... "
It should be noted that Technical Bulletins provide guidance on the minimum requirements
of the NFIP regulations. Community or State requirements that exceed those of the NFIP
take precedence. Design professionals should contact the community to determine whether
more restrictive local or State regulations apply to the building or site in question. All
applicable standards of the State or local building code must also be met for any building in
a flood hazard area.
A review of the following factors for the site in question will assist the design professional in
determining whether floodproofing is appropriate. For example, if a site will be surrounded by
rapidly rising, high -velocity floodwaters during a flood, and the available warning time is short,
then the site is unsuitable for a floodproofed building.
Warning Time
The rate -of -rise of floodwaters for the site in question, the established flood warning system (if
any), the flood warning time available, and the reliability of the flood warning must be reviewed
to determine appropriate floodproof design elements. The rate -of -rise or the flood warning time
available through an existing reliable (community -based or regionally based) flood warning
system must be adequate to provide sufficient lead time to evacuate a floodprone building when
flooding threatens. In addition, sufficient warning time must exist to successfully place
floodproofing components, such as removable flood shields or gates, if such components are to
be included in the floodproofing design. Other examples of floodproofing techniques that can
require human intervention are operating sump pumps and closing valves. The amount of time
necessary to put human intervention floodproofing components in place will depend upon tine
number of components, their complexity, and the availability of personnel to place them.
Floodproofed buildings are not appropriate for any site in a flash flood area, because of the
potentially short warning time.
Safety and Access
Safe access to a floodproofed building is a critical factor in the determination of whether
floodproofing is an appropriate design alternative. In 1987, Colorado State University conducted
a study of human stability in flood flow conditions based on the product number of depth of flow
multiplied by the floodwater velocity. Results of this study indicated that any floodplain location
with a product number of 4 or greater represents a significant hazard to individuals. Floodplain
sites with a base flood product number number of 4 or greater (depth in feet multiplied by veloc-
ity in feet per second) will create a hazard for anyone attempting to escape from or gain access to
the site. Such sites are not generally acceptable for floodproofed buildings, unless modifications
are made to the site to reduce the flood hazard.
For any floodproofed building, all roads to be used as evacuation routes must remain passable as
the floodwaters rise. In addition, all roads that provide access to buildings whose dry-
floodproofing components require human intervention must remain passable long enough for the
floodproofing components to be installed and for all personnel to safely evacuate the site. For
sites with an acceptably low hazard (product number less than 4) that are contiguous to land
above the BFE, evacuation and access during times of flooding are generally not critical consid-
crations.
Flood Velocities, Flood Depths, and Debris
For sites with flood velocities in excess of 5 feet per second or base flood depths in excess of 3
feet, the cost of dry-floodproofed construction may be prohibitive. Part 3 of the section of this
bulletin titled "Minimum Engineering Considerations" describes the flood forces that a
floodproofed building must be able to resist. Flood -borne debris can generate impact forces that
may make a dry-floodproofed design technically infeasible and therefore inappropriate. A level
of safety above the BFE, referred to as freeboard, is recommended, as discussed under "Mini-
mum Engineering Considerations. "
Note: 'While buildings need only be protected to the BFE for floodplain management pur-
poses, freeboard is considered for flood insurance rating purposes. Because of the additional
risk associated with any floodproofed building, I foot is subtracted from the elevation to
which a building has been floodproofed, for insurance rating (if the building is floodproofed
at least to the BFE). "Therefore, to receive an insurance rating based on 100-year flood
protection, the building must be floodproofed to an elevation at least I foot above the BFE.
Insurance premiums will be lower if floodproofing exceeds this requirement.
Flood Frequency
A site that has been flooded frequently may not be appropriate for a dry-floodproofed building.
The cumulative wear -and -tear on a building's external components as a result of recurring
inundation may render a dry floodproofing strategy infeasible. The cost of repeated business
interruption and of frequent cleanup activities, as well as the effects of having to repeatedly
implement a flood emergency plan, must be assessed.
If the evaluation of each of the aforementioned factors indicates that dry floodproofing is a
viable floodplain management alternative, then a floodproofing design is developed. For all
floodproofed buildings, the design professional must then produce both a Flood Emergency
Operation Plan and an Inspection and Maintenance Plan for the building.
Flood Emergency Operation Flan
A Flood Emergency Operation Plan is an integral part of any building's floodproofing design
and is critical when the floodproofing requires human intervention such as the installation of
flood gates or flood shields. A Flood Emergency Operation Plan is necessary for any
floodproofed building to ensure that the floodproofing components will operate properly under
all conditions, including power failures. A continuous source of electricity to operate any neces-
sary floodproofing components, such as pumps, will be needed for any floodproofing design. that
includes such components. The design professional must produce the plan. An adequate plan
must include the following:.
1. An established chain of command and responsibility with leadership responsibilities clearly
defined for all aspects of the plan.
2. A procedure for notification of necessary parties when flooding threatens and flood warnings
are issued. Personnel required to be at the building should have a planned and safe means of
ingress and should have no other emergency response duties during a flood event. Alternates
should be assigned in the event that the primary persons responsible are unable to complete
their assigned duties under the plan.
3. A list of specific duties assigned to ensure that all responsibilities are addressed expedi-
tiously. The locations of materials necessary to properly install all floodproofing compo-
nents must be included in the list.
4. An evacuation plan for all personnel —those without duties for the flood emergency as well
as those with. duties for implementing the plan. All possible ingress and egress routes must
be identified.
5. A periodic training and exercise program to beep personnel aware of their duties and respon-
sibilities. Training drills should be held at least once a year and should be coordinated with
community officials. Flood safety precautions should be repeated during each training drill.
Inspection and Maintenance Plan
Every floodproofing design requires some degree of periodic maintenance and inspection to
ensure that all components will operate properly under flood conditions. The necessary inspec-
tion and maintenance activities, including inspection intervals and repair requirements, must be
described in the Inspection and Maintenance Plan. Components that should be inspected as part
of an annual (as a minimum) maintenance and inspection program include the fallowing:
1. Mechanical equipment such as sump pumps and generators.
2. Flood shields and. closures, to ensure that they fit properly and that the gaskets and seals are
in good working order, properly labeled, and stored as indicated in the Flood Emergency
Operation Plan.
3. Wails and wall penetrations, for cracks and potential leaks.
4. Levees and berms, for excessive vegetative growth, cracks, or leafs.
Both the Flood Emergency Operation Plan and the Inspection and Maintenance Plan are neces-
sary at the time that the Non -Residential Floodproofing Certificate is submitted to the commu-
nity. Before issuing a building permit, the community should require that the property owner
sign an agreement stating that the plan will be adhered to. The community should also be as-
sured that the inspection and maintenance activities required by the plan will continue regardless
of changes in the ownership of the floodproofed building. This assurance should be accom-
plished by appropriate deed restrictions. Any lease agreement should also contain clear language
stating the leaseholder's responsibilities for the foodproofed building.
The design professional, a registered professional engineer or architect, roust certify that the
following requirements have been met by the building's design, specifications, and plans:
1. The building roust be watertight (i.e., floodwaters must not enter the building envelope):
a. The building must be watertight to the floodproof design elevation, which is further
defined as being at least the BFE. As previously noted, floodproofing to any elevation
less than 1 foot above the BFE will have a serious negative impact on the flood insurance
rating for the building. Generally a minimum of l foot of freeboard is recommended.
Additional freeboard is warranted for sites where predicted flood depths may be inaccu-
rate, such as sites within large drainage areas and rapidly urbanizing areas.
The building's walls must be "substantially impermeable to the passage of water."
FEMA has adopted the U.S. Army Corps of Engineers (COE) definition of substantially
impermeable from the COE publication "Flood Proofing Regulations." This document
states that a substantially impermeable wall "shall not permit the accumulation of more
than 4 inches of water depth during a 24-hour period if there were no devices provided
for its removal. However, sump pumps shall be required to control this seepage." Flood -
resistant materials, described in Technical Bulletin 2, "Flood -Resistant Materials Re-
quirements," must be used in all areas where such seepage is likely to occur.
2. The building's utilities and sanitary facilities, including heating, air conditioning, electrical,
water supply, and sanitary sewage services, must be located above the BFE, completely
enclosed within the building's watertight walls, or made watertight and capable of resisting
damage during flood conditions.
All of the building's structural components must be capable of resisting specific flood -related
forces. These are the forces that would be exerted upon the building as a result of floodwa-
ters reaching the BFE (at a minimum) or floodproofing design level, and include the follow-
ing:
a. Hydrostatic Flood Force —This is the force that water at rest exerts on any submerged
object. For a floodproofed building design, the calculations of hydrostatic flood forces
roust include saturated soil pressure on any portion of the building that is below grade
(see Figure 1). Guidelines for determining hydrostatic pressure are provided on the
following page.
HYDROSTATIC
PRESSURES
BY WATER DEPTH
HEIGHT (H)
Ph (LBSfSQ.FT.)
(WATER DEPTH]
62.4
2
124.8
3
187.2
4
249.6
5
312.0
6
374.4
7
436.8
8
499.2
9
561.6
10
624.0
Figure 1. Hydrostatic Pressure Diagram
W
Buoyancy Force
Resultant Lateral Force Due to Hydrostatic Pressure from Freestanding Water:
FG, = 1/zwH'
where: FE, is the lateral force from freestanding water (in pounds per linear
foot of surface)
w is the specific weight of water (62.4 pounds per cubic foot)
H is the height of the standing water (to the floodproof design level)
If any portion of the building is below grade, then calculate the Resultant Cumulative
Lateral Force Due to Hydrostatic Pressure from Saturated Soil:
Fsat = '/zSD-+F;,
where: Fs at is the lateral force from saturated sail
5 is the equivalent fluid weight of saturated soil (in pounds per
cubic foot)
D is the depth of saturated soil (in feet)
F, is the lateral force from freestanding water
Mote: See Appendix: C of the FEMA "Design Manual for Retrofitting Flood -Prone Residential Structures"
for further information,
7
b. Buoyancy -This is the vertical force associated with the building's tendency to float
when inundated or surrounded by floodwaters. This force can be calculated as shown
below.
Buoyancy Force:
F, = wAH
where: F,, is the force due to buoyancy
w is the specific weight of water (62.4 pounds per cubic foot)
A is the area of horizontal surface (floor or slab) being acted upon (in
square feet)
H is the depth of building below the floodproofina design level (in feet)
Note: See Appendix C of the FEMA "Design Manual for Retrofitting Ftood-Prone Residential Structures"
for further information.
c. Hydrodynamic Force —This is the force exerted on vertical surfaces exposed to moving
floodwaters. The determination of hydrodynamic force is based on the expected velocity
of the floodwaters with depths to the f`loodproofing design level (BFE or higher). The
projected average base flood velocity within the floodway may be obtained using FEMA
Flood Insurance Studies (FISS) where a. floodway has been identified. It should be noted
that velocities in the flood fringe will generally be less than the floodway velocities
presented in the FIS. Where no FIS velocity data exist, velocities should be determined
using Manning's equation, as found in most hydraulic reference and text books.
Hydrodynamic Force:
F, = C'tn' 2(V )'A
where: F, is the lateral force due to hydrodynamic pressure
C, is the drag coefficient
in is the mass density of water (1.94 slugs per cubic foot)
V is the velocity of the water (in feet per second)
A is the area of the wall affected (in square feet)
Note: See Appendix C of the FEiw [A "resign Manual for Retrofitting Ftood-Prone Residential Structures" for
Further information.
8
d. Debris Impact Force —This is the force associated with flood -borne debris striking the
side of a building. This force presents the greatest unknown to the designer, but a value
must be estimated to develop an effective floodproofing design. Unless more detailed
information is available, such as historical debris flow data, the formula shown below
should be used. This formula assumes a 1-second duration of impact. The weight of the
object is generally estimated at 1,000 pounds but can be reduced to 500 pounds for areas
subject to minor debris flow potential. Any areas subject to severe debris (such as moun-
tainous regions or areas subject to ice floes) are not appropriate sites for floodproofed
buildings unless the designer takes these forces into account in designing and armouring
the building. Armouring often results in designs that are not cost-effective.
Debris Impact Force:
Fi = WV
gt
where: F, is the Impact Force
w is the weight of the object (in pounds)
v is the velocity of the object (in feet per second)
Eg is the acceleration due to gravity (32.2 feet per second)
t is the duration of impact (in seconds)
Note: See Appendix C of the FEMA -Design Manual for Retrofitting Flood -Prone Residential Structures"
for further information.
4. Like all construction that falls under the NHP regulations, the building must meet the re-
quirements of all applicable portions of local and State building codes, including the provi-
sions of the Americans with Disabilities Act; life -safety codes for ingress, egress, and clear-
ing; and venting and combustion air requirements.
The Floodproofing Certificate is required for all non-residential buildings to be floodproofed and
is to be completed by the design professional. The first part of the Certificate contains informat-
ion concerning; the location and ownership of the building.
FEDERAL EMERGENCY MANAGEMENT AGENCY
NATIONAL FLOOD INSURANCE PROGRAM O.M.B. Na. 3067-"u�77
FLOODPROOFING CERTIFICATE
FOR NON-RESIDENTIAL STRUCTURES
The floodprooffng of non-residential buildings maybe permitted as an alternative to elevating to or above the Base Flood Elevation, -
however, a floodprooffng design certification is required. This form is to be used for that certification. Floodproofing of a residential
building does not alter a cummunity's floodplain management elevation requirements or affect the insurance rating unless the
community has been issued an exception by FEMA to allow floodproofnd residential basements. The permitting of a floodproofed
residential basement requires a separate certification specifying that the design complies with the local floodplain management
ordinance.
FOR INSURANCE COMPANY USE
BUILDING OWNER'S NAME
POLICY NUMBER
STREET ADDRESS (including Apt.., Unit, Suite andlor Bldg. Number) OR P.O ROUTE AND BOX NUMBER COMPANY NAIL NUMBER
OTHER DESCRIPTION (Lot and Block Numbers, etc.)
CITY STATE. ZIP CODE
Building location and Ownership information
Section I of the Certificate is the Flood Insurance Rate Map (FIRM) information, including the
BFE used in designing the floodprooffng system. Copies of the FIRM should be available
through the community's floodplain administrator.
FLOODINFORMATION
Provide the following from the proper FIRM:
COMMUNITY NUMBER
PANEL NUMBER
SUFRX
DATE OF FIRM INDEX
FIRM ZONE BASE FLOOD ELEVATION
(in AO Zones use depth)
Section I
Section II requests information regarding the floodproofing design. The first item is the eleva-
tion, referenced to the datum of the FIRM (generally the National Geodetic Vertical Datum of
I929), to which the building is floodproofed. This elevation must be equal to or greater than the
BFE. It is important to note that for insurance rating purposes, the floodproofing design must
provide protection to I foot above the BFE to receive rating credit. If the building is
floodproofed only to the BFE, then the building's insurance rating will result in a higher pre-
rnium. Before a decision is made to floodproof to less than I foot above the BFE, insurance
implications should be carefully considered.
The second item is the height of the floodproofing above the lowest adjacent grade. This infor-
mation is intended to be used by community building officials, FEMA, and NFIP insurance
underwriters to analyze the level of safety that the floodproofing design will provide. Since
floodwaters exert greater pressure on the floodproofed building as the height of the flooding
increases (see Figure I ), floodproofing that exceeds 3 feet in height represents a greater risk and
may result in insurance rates that reflect this increased risk..
Floodproofing Design Elevation Information:
Building is floodproofed to an elevation of _ feet NGVD. (Elevation datum used must be the same as that on
the FIRM.)
Height of floodproofing on the building above the lowest adjacent grade is feet.
(NOTE: for insurance rating purposes, the building's floodproofed design elevation must be at least one foot above the
Base Flood Elevation to receive rating credit if the building is floodproofed only to the Base Flood Elevation, then the
building's insurance rating will result in a higher premium.)
Section II
Section III is the actual certification of the floodproofing design as required in Section 60.3(c)(4)
of the NFIP regulations. It is important to note that design professionals signing this form are
certifying that they have developed and/or reviewed the design plans and specifications and find
them in compliance with accepted standards of practice for dry floodproofing. This certification
is based on the floodproofing design, n t the as -built condition of the building. The person
signing this farm must be a registered professional engineer or architect within the state or
territory where the building will be constructed or substantially improved..
SECTION III CERTIFICATION (By a Registered Professional Engineer or Architect)
Non -Residential Floodproofed Construction Certification,.
l certify that based upon development andfor review of structural design, specifications, and plans for construction that
the design and methods of construction are in accordance with accepted standards of practice for meeting the
following provisions:
The structure, together with attendant utilities and sanitary facilities, is watertight to the floodproofed design
elevation indicated above, with walls that are substantially impermeable to the passage of water.
All structural components are capable of resisting hydrostatic and hydrodynamic flood forces, including the
effects of buoyancy, and anticipated debris impact forces.
I certify that the information on this certificate represents my best effort to interpret the data available. I understand that
any false statement may be punishable by fine or imprisonment under 18 U.S. Code, Section 1001.
CERTIFIER'S NAME LICENSE NUMBER (or Affix Seal)
TITLE COMPANY NAME
ADDRESS CITY STATE ZIP
SIGNATURE
DATE PHONE
Copies should be made of this certificate for: 1) community official, 2) insurance agent/company, 3) building owner.
FEMA Form 81-65
Section III
The NFIP was created by Congress in 1968 to provide federally backed flood insurance cover-
age, because flood insurance was generally unavailable from private insurance companies. The
NFIP is also intended to reduce future flood lasses by identifying floodprone areas and ensuring
that new development in these areas is adequately protected from flood damage. The NFIP is
based on an agreement between the federal government and participating communities that have
been identified as being floodprone. FEMA, through the Federal Insurance Administration
(FIA), makes flood insurance available to the residents of a participating community provided
that the community adopts and enforces adequate floodplain management regulations that meet
the minimum NFIP requirements. The NFIP encourages communities to adopt floodplain man-
agement ordinances that exceed the minimum NFIP criteria. Included in the NFIP requirements,
found under Title 44 of the U.S. Code of Federal Regulations, are minimum building design and
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construction standards for buildings located in SFHAs. Through their floodplain management
ordinances, communities adapt the NFIP design performance standards for new and substantially
improved buildings located in floodprone areas identified on. FIA's FIRMS.
Technical Bulletins
This is one of a series of Technical Bulletins FEMA has produced to provide guidance concern-
ing the building performance standards of the NFIP. These standards are contained in Title 44 of
the U.S. Code of Federal regulations at Section 60.3. The bulletins are intended for use prima-
rily by State and local officials responsible for interpreting and enforcing NFIP regulations and
by members of the development community, such as design professionals and builders. New
bulletins, as well as updates of existing bulletins, are issued periodically, as necessary. The
bulletins do not create regulations; rather they provide specific guidance for complying with the
minimum requirements of existing NFIP regulations. Users of the Technical Bulletins who need
additional guidance concerning NFIP regulatory requirements should contact the Natural haz-
ards Branch of the appropriate FEMA regional office. The "User's Guide to Technical. Bulle-
tins" lists the bulletins issued to date and provides a key word/subject index for the entire series.
Ordering Information
Copies of the Technical Bulletins can be obtained from the appropriate FEMA regional office.
Technical Bulletins can also be ordered from the FEMA publications warehouse. Use of FEMA
Form 60-8 will result in a more timely delivery from the warehouse — the form can be obtained
from FEMA regional offices and your state's Office of Emergency Management. Send publica-
tion requests to FEMA Publications, P.O. Box 70274, Washington, D.C. 20024,
The following publications provide further information concerning non-residential
floodproof ng:
1. "Answers to Questions About Substantially Damaged Buildings," FEMA, May 1991, FEMA-
213.
2. "Block and Brick Wall Integrity Against Water heights and Systems and Materials to Prevent
Flood Waters From Entering Buildings," Carl E. Pace, U.S. Army Corps of Engineers Water-
ways Experiment Station, Vicksburg, Mississippi, 1984.
3. "Commercial -Industrial Flood Audit," New England District, U.S. Army Corps of Engineers,
n.d.
4. "Cooperative Flood Loss Deduction, A Technical Manual for Communities and Industries,"
Flood Doss reduction Associates, 1981.
, "Design Manual for Retrofitting Flood -Prone Residential Structures," FEMA, September
1986, FEMA-1 14.
6. "Floodproofing Non -Residential Structures," FEMA, May 1986, FEMA- 102.
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7. "Flood Proofing Regulations," U.S. Army Corps of Engineers, March 1992, EP 1165-2-314,
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8. "Human Stability in a High Flood Hazard Zone," S.R. AN, R.J. Whittlen, A. Taylor, and D.J.
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Love, Water Resource Bulletin, August 1989.
9. "Sealants, Part I," John P. Cook, Progressive Architecture, December 1974.
10. "Sealants, Part 2," John P. Cook, Progressive Architecture, February 1975.
11. "'Systems and Materials to Prevent Flood Waters from Entering Buildings," U.S. Army Corps
of Engineers, 1984.
12. "Tests of Brick -Veneer Walls and Enclosures for Resistance to Flood Waters," Carl E. Pace,
U.S. Army Corps of Engineers, Lower Mississippi Division, Vicksburg, Mississippi, 1978.
Glossary
Base flood — The flood that has a I -percent probability of being equaled or exceeded in any
given year (also referred to as the 100-year flood).
Base Flood Elevation (BITE) — The height of the base flood, usually in feet, in relation to the
National Geodetic Vertical Datum of 1929 or other datum as specified.
Basement — Any area of a building having its floor subgrade (below ground level) on all sides.
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Coastal High Hazard Area — An area of special flood hazard extending from offshore to the
inland limit of a primary frontal dune along an open coast and any other area subject to high -
velocity wave action from storms or seismic sources.
Federal Emergency Management Agency (FEMA) — The independent federal agency that, in
addition to carrying out other activities, oversees the administration of the National Flood Insur-
ance Program.
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Federal Insurance Administration (FIA) — The component of FEMA directly responsible for
administering the National Flood Insurance Program.
Flood Insurance Rate Map (FIRM) — The insurance and floodplain management map issued
by FEMA, that identifies, on the basis of detailed or approximate analyses, areas of 100-year
flood hazard in a community.
Floodprone area — Any land area susceptible to being inundated by floodwater from any
source.
Lowest floor — The lowest floor of the lowest enclosed area of a building, including a base-
ment. Any NFIP-compliant unfinished or flood -resistant enclosure uscable solely for parking of
vehicles, building access, or storage (in an area other than a basement) is @, considered a
building's lowest floor.
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Special Flood Hazard Area (SFHA) — Area delineated on a Flood Insurance Rate Map as
being subject to inundation by the base flood and designated as Zone A, AE, Al-A30, AR, AO,
AH, V, VE, or Vl-V30.
,Substantial damage Damage of any origin sustained by a structure whereby the cost of
restoring the structure to its before -damaged condition would equal or exceed 50 percent of the
market value of the structure before the damage occurred.
Substantial improvement — Any reconstruction, rehabilitation, addition, or other improvement
of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure
before the "start of construction" of the improvement. This term includes structures that have
incurred "substantial damage," regardless of the actual repair work performed.
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