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Home My WebLink AboutICC-ES EVALUATION REPORTDIVISION: 08 00 00—OPENINGS SECTION: 08 95 43--VENTS/FOUNDATION FLOOD VENTS REPORT HOLDER: FLOOD FLAPS", LLC POST OFFICE BOX 1003 ISLE OF PALMS, SOUTH CAROLINA 29451 EVALUATION SUBJECT: FLOOD FLAPS® AUTOMATIC FLOOD VENTS: MODELS FFWF12; FFNF12; FFWF08; FFNF08; FFWF05; FFNF05 ICC : ICC _ ICC C PMG C Law Look for the trusted marks of Conformity! ff2014 Recipient of Prestigious Western States Seismic Policy Council (WSSPQ Award in Excellence" A Subsidiary of ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not cam specially addressed nor are they to be construed as an endorsement of the subject of the report or a t recommendation for its use There is no warranty by ICC Evaluation Service, LLC, express or implied as 999 to anyfnding or other matter in this repor4 or as to any product covered by the report. Copyright 0 2017 ICC Evaluation Service, LLC. All rights reserved. IMES Evaluation Report ESR-3560 Reissued September 2017 This report is subject to renewal September 2018. www.icc-es.org 1 (800) 423-6587 1 (562) 699-0543 A Subsidiary of the Intemational Code Council® DIVISION: 08 00 00—OPENINGS Section: 08 95 43—VentslFoundation Flood Vents REPORT HOLDER: FLOOD FLAPS®, LLC POST OFFICE BOX 1003 ISLE OF PALMS, SOUTH CAROLINA 29451 (843) 881-0190 www.floodfaps.com infofd►_floodfiaps.com . EVALUATION SUBJECT: FLOOD FLAPS® AUTOMATIC FLOOD VENTS: MODELS FFYVFI2; FFNF12; FFWF08; FFNF08; FFWF05; FFNF05 1.0 EVALUATION SCOPE Compliance with the following codes: ■ 2015, 2012 and 2009 International Building Code® (IBC) ■ 2015, 2012 and 2009 Intemaffonal Residential Code® (IRC) Properties evaluated: ■ Physical operation ■ Water flow ■ Weathering 2.0 USES Flood Flaps® automatic flood vents are used to provide for the equalization of hydrostatic food forces on exterior walls. Certain models also allow natural ventilation. 3.0 DESCRIPTION 3.1 General: Flood Flaps® automatic flood vents are engineered mechanically operated flood vents (FVs) that automatically allow flood waters to enter and exit enclosed areas. The FVs are constructed of ABS plastic which serves as the FV's housing, and a front grill that contains an anodized metal screen imbedded in polypropylene plastic. On contact with rising flood water, the grill will disengage from its secured position, allowing flood water and debris to flow through in either direction. The FVs are available in two series as described in Section 3.3. The sealed series models contain two rubber flaps that dose the FV to the passage of air when using with conditioned areas or sealed crawl spaces. In the same manner as the grill, the two rubber flaps are pushed open by water pressure, allowing water and debris to flow through the FV in ether direction. See Figure 1 for an illustration of the Flood Flaps® automatic FV. 32 Engineered Opening: The Flood Flaps' automatic FVs comply with the design principle noted in Sections 2.722 and 2.7.3 of ASCEISEI 24-14 [Section 2.6.22 of ASCEISEI 24-05 (2012 and 2009 IBC and IRC)] for a rate of rise and fall of 5 feet per hour (0.423 mm/s). In order to comply with the engineered opening requirement of ASCEISEI 24, Flood Flaps® automatic FVs must be installed in accordance with Section 4.0. 3.3 Flood Vent Series Models: Flood Flaps® automatic FVs are available in two series with multiple models and sizes as described in Table 1. The sealed series models, designated FFWF, include two rubber flaps for the prevention of air flow. The multi- purpose series, designated FFNF, omits the rubber flaps. 3A Natural Ventilation: Flood Flaps® automatic FV models FFNF12, FFNF08, . FFNF05, and FFNF02 have metal screens with 14 inch by r/4 inch (6 mm b ► 6 mm) openings and provide 37 square inches (0.02 m) of net free opening to supply natural ventilation for under -floor ventilation. Flood Flaps automatic FV models FFWF12, FFWF08, and FFWF05 have not been evaluated for use as openings for under- floor ventilation. 4.0 DESIGN AND INSTALLATION Flood Flaps® automatic FVs are designed to be installed into walls of existing or new construction. Installation of the FVs must be in accordance with the manufaacturees instructions, the applicable code and this report Flood Flaps® automatic FVs can be installed in wood, masonry and concrete walls up to a thicimess of 12 inches (305 mm). In order to comply with the engineered opening design principle noted in Sections 2.7. 2 and 2.7.3 df ASCEISEI 24-14 [Section 2.62.2 of ASCEISEI 24-0.5 (2012 and 2009 IBC and IRC)], the Flood Flaps® FVs must be installed as follows: ■ With a minimum of two openings on dti%rent sides of each enclosed area., ' 1CC-ES6vakntion Repartr we imt to be oonswcwd= repwmnft awhuics or any other aMburef not spe ftcaf1y a*W=ed nor are dwy to be aons&ued as an ertdmse=d ojrbesubjed 0fdke nVQHOra►ecomm Mai mrfor its use AM is no tva»mrty byICCEvvhwbn Service; LLC apress or implied as toanyjbx igorotha wager inddrnpaMorastomrypnodwrcovaedbythe rrport aunew Copyright 0 2017 ICC Evaluation service, LLC. All rights reserved. Page 1 of 3 ESR-3560 1 Most WxklyAccepted and Trusted Page 2 of 3 ;! With a minimum of one Fro, ery 220 square : feet (20 m2) of enclosed area. ■ Below the base flood elevation. ■ With the bottom of the FV located a maximum of 12 inches (305 mm) above grade. 5.0 CONDMONS OF USE The Flood Flaps® automatic flood vents described in this report empty with, or are suitable albematives to what is specified in, those codes listed in Section 1.0 of this report, subject to the following conditions: 5.1 The Flood Flaps® automatic FVs must be installed in accordance with this report, the applicable code and the manufacturer's installation instructions. In the event of a conflict, the instructions in this report govern. 5.2 The Flood 1 .&,- __tomatic FVs must not be used in place of "breakaway walls' in coastal high hazard areas, but are permitted for use in conjunction with breakaway walls in other areas. 6.0 EVIDENCE SUBMITTED Data in accordance with the ICGES Acceptance Criteria for Mechanically Operated Flood Vents (AC364), dated August 2015. 7.0 IDENTIFICATION The Flood Flaps® models recognized in this report are identified by a label bearing the manufacturer's name, the model number, and the evaluation report number (ESR-3560). TABLE 1--FLOOD FLAP AUTOMATIC FLOOD VENT MODEL SIZES MODEL NUMBER MODEL DESIGNATION ROUGH OPENING (WKM X Height) (inches) VENTSIZE (C H X D) ) ENCLOSED AREA COVERAGE (ft) NET FREE AREA OPENING' (in) FFWF12 Sealed Series 16 x 8 15 /e X 7314 X 12 220 NA FFNF12 Multi -Purpose 16 x 8 1 5551a X 734 X 12 220 37 FFWF08 Sealed Series 16 x 8 1 /8 x /4 x 8 220 NA FFNF08 Multi -Purpose 16 x 8 1 /a x 71, x 8 220 37 FFWF05 Sealed Series 16 x 8 1 /a x /4 x 5 220 NA FFNF05 For 51: 1 inch;; 25 Mufti -Purpose A mar 1 e = n ncm .., 16 x 8 WAS x 14 x 5 220 37 'For underfloor ventilation only. �.v�vavu I amai Wlaa and Trusted - _ Page 3 of 3 FFWF FIGURE 1—FLOOD FLAPS® AUTOMATIC FLOOD VENT FFNF08 FFNF05 FIGURE 2—FLOOD FLAPS® AUTOMATIC FLOOD VENT SERIES MODELS i" DEPTH ' St' DEPTH 511 FIGURE 3—FLOOD FLAPS® AUTOMATIC FLOOD VENTS MULTIPLE DEPTH OFFERINGS DEPTH —OpftpI nsta I lati'OA nstructl ons ftF ap 6P ftwftw Flood Flaps LLC Date: Rev.7/1/2015 Unmatched Value -Superior Performance Trim Flange Models: FFWF12 I FFWF08 I FFWF05 FFNF12 I FFNF08 I FFNF05 • FOLLOW ALL LOCAL BUILDING CODES AND ALL FEMA/NFIP INSTALLATION REQUIREMENTS AND REGULATIONS • REVIEW THESE INSTRUCTIONS BEFORE INSTALLATION . INSPECT VENTS FOR DAMAGE AND TO MAKE SURE THE GRILL IS PROPERLY CENTERED BETWEEN THE RAISED TABS ON THE BOTTOM . RUBBER FLAPS SHOULD BE POSITIONED IN THEIR CHANNELS 1. VERIFY DIMENSIONS OF ROUGH OPENING .6" L X 8" H); MAKE SURE FLOOD VENT FITS OPENING 2. APPLY HEAVY DUTY ADHESIVE TO BOTTOM AND SIDES OF FLOOD OPENING 3. APPLY EXTERIOR GRADE CAULK AROUND WALL SIDE OF TRIM FLANGE (CLEAR CAULK RECOMMENDED) AND SLIDE FLOOD VENT INTO THE OPENING. 4. APPLY PRESSURE AROUND ENTIRE FLOOD VENT TO ENSURE A TIGHT/SECURE INSTALLATION Flood Flaps LLC 0 3594 Holmgren St 0 Mt. Pleasant SC 0 29466 0 www.floodflaps.com r !CC ESR-M&''7 Flood Flaps Frequently Asked Questions Codes FEMA, NFIP, and Building Code requirements • Regulations require that enclosed areas surrounded by solid walls that extend below the BFE have flood openings. o Several examples of enclosures that require openings are described below: ■ Solid perimeter foundation walls (crawlspaces or under -floor spaces) ■ Solid perimeter foundation walls (below -grade crawlspaces) ■ Solid perimeter foundation walls (with full -height under -floor spaces) ■ Garages attached to elevated buildings ■ Enclosed areas under buildings elevated on open foundations in A zones ■ Enclosed areas with breakaway walls under buildings elevated on open foundations in A zones ■ Solid perimeter foundation walls on which manufactured homes are installed ■ Accessory structures (detached garages and storage sheds) • Each enclosed area is required to have a minimum of two openings on exterior walls to allow floodwaters to enter directly. In order to meet the requirement, the openings must be located so that the portion of the opening intended to allow for inflow and outflow is below the BFE. o Openings that are entirely above the BFE (or any portion of an opening that is above the BFE) will not serve the intended purpose during base flood conditions and thus are not counted towards the compliance with the flood opening requirements. • The openings should be installed on at least two sides of each enclosed area to decrease the chances that all openings could be blocked with floating debris and to allow for more even filling by floodwater and draining of the enclosed area. • The bottom of each opening is to be located no higher than 1 foot above the grade that is immediately under each opening. o Finished exterior grade - Care should be taken when placing backfill, topsoil, and landscaping materials around the outside of enclosures, especially solid perimeter foundation walls. If the finished exterior grade is higher than the interior grade on all sides of the building, then the enclosed area becomes a basement as defined by the NFIP. o Final interior grade - The trench that is excavated to construct footings and foundation walls must be backfilled completely, otherwise a basement is created. If the interior grade is higher than the. exterior grade, the openings are to be no higher than 1--foot above the interior grade. • Any screens, grates, grilles, fixed louvers, or other covers or devices must not block or impede the automatic flow of floodwaters into and out of the enclosed area. • Stacked vent devices maybe installed. If the BFE does not reach the top of the opening, only the portion that is below the BFE will count as contributing to the required net open area. Helpful References: • FEMA Technical Bulletin 1: Openings in Foundation Walls of Enclosures • American Society of Civil Engineers: Flood Resistant Design and Construction (ASCE 24-14) 3594 Holmgren St. • Mount Pleasant, SC • 29466 • (843) 881-0190