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FLOOD PUR STANLESS STEEL ���� � FA-316 & FAAL
FLOOD ONRY S TANNI LESS STEEL & POWDER COATED MODELS F®-3 6 & FOAL
FA-316 & FAAL
Rough Opening Diagram
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USING CONCRETE FASTENERS
THRU THE HOLES PROVIDED LN i ........
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Rough Opening Diagram
56 West Main Street, Kings Park, NY 11754 800-USA-1993 (800-872-1993) - 63 1-269-1872
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-¢ `= Certification of Engineered Flood Openings
rOUHq TION ROOD ac N`R In accordance with NFIP, FEMA Technical Bulletin 1-08 and ASCEISE124-05
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Certification Statement
I hereby certify that.the flood vents manufactured by USA Foundation Flood Air Vents(Modei Noes FO 316, FA-316. FOAL, FAAL, RFPC and RFSS) are designed
in accordance with the requirements of the 2011 NFIP `Flood Insurance Manual" to provide automatic equali2xition of hydrostatic flood loads on exterior walls by
allowing the automatic entry and ad of floodwaters during floods up to and including the base 100-year flood_ The flood vents must be installed and sized properly
as set forth by the requirements below. This certification follows the design requirements and specifications that are established in FEMA Technical Bulletin 1.08
and ASCE/SEI 24405.
Design Characteristics
I hereby certify that I have measured the flood vent models listed below_ I have also giariaated the maamnum total enclosed area that can be served by each
indiMdual model based on the net area of the opening using the equation taken from ASCFISI7 24-05. Section 2-622 and the following design assumptions listed
below.
Design Assumptions:
1_ The rates of rise and fag have been assumed
to be 5 feet per hour_
2. The maadmum ddference between the miterior
and interior floodwater levels have been
assumed to be 1 foot during base flood
conditions_
3_ A factor of safety of 5 has been used in the
design.
Area of Engineered Openings perASCE 24, Section 262.2
A =(0.0333)[7ic]R(Ae) -> Ae=Ao/1(0.0333)[1/c]R]
Where.
A. =
Total Net Area of Openings Required (in)
0.033 =
Coefficient Corresponding to a Factor of Safety of 5.0 (inz-hrnt)
c =
Opening Coefficient (Non -Dimensional: see ASCE 24. Table 2-2)
R =
Worst Case Rate of Rise and Fall (ft/hr)
A. =
Total Enclosed Area (flz)
Maximum Area Coverage in Square Feet per Vent for each Model
Model
Height
Width
AR
Constant
a
R
On-)
[in.)
(in?)
(id-hr/fl3)
(ft/hr)
06
FO316
7-00
15.50
108.50
0.0330
0A00
5
263
FA316
7A0
15:50
: _10B.50
0.0330", ..
0.400
:. < ..
263
FOAL W
7i00 ':
15:50'- .
108_SD
Od)330 -
0.400
_$;;::. -
5
FOAL-8
-.7.00
i 50 ,:= .
108-50
AW30
0.400
5
FOAL G
%00
15.30
10850
00330 .
�. ,,0.400
', 5
FAAL W
7.00
1550
108.50 ; -
00330 _
'0A00
5
FAAL B
=.T00
=1550
108.50
0.0330
0 400. ,.
> 5 -
d232
FAALG
7:00 :-
15.SD
108.50
D:D330
:a:i:04D0
5 ';'.
RFPC
, 7.00
13.75
9625
0.0330
0.398
._.:
5
RFSS
7.00
13.75
95 25
0.0330
0.398'Note:
5
/Q..) it lho
mavim•••n r..1nl anwlr,�n.r
.,.,.., a..-' _--
� ... ,ur raver frrurvrauar mower cased on the net area of the opening (A R)
• rs �.aRa��•• r�aarrnrrr,s Foundation Flood Atr Penis and Conn
Engineering Consultants, Inc do ana larimaons are not enforced_ WA
good vents. not recommend or authorize any modficalkm to the flood vents and will not be held Gable for improper installation or modification of the
FEMA/ NFIP Limitations and Installation Requirements:
1: A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided-
2. The bottom of all openings shall be no higher than one foot above grade that is immediately under each opening.
3. Openings may be equipped with screens, louvers, valves or other coverings or devices provided that they permit the automatic entry and exit of floodwaters_
4. it is recommended that openings be reasonably distributed around the perimeter of the enclosed area unless there is dear justification for putting all openings
on just one orhvo sides (such as in townhouses or buildings set into sloping sites).
5- Where analysis indicates rates of rise and fag greater than 5 feet per hour, the total enclosed area shall be reduced a6cordinniv.
I TRIM SAMPLE
s: SAMPLE
e Type: SAMPLE
SAMPLE
e Number SAMPLE
and Installation Address:
SAMPLE
Number SAMPLE
Urn total enclosed area that can be served for EACH individual vent
232 Square Feet
Professional Engineering Seal