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Home My WebLink AboutTYPICAL VYNIL SKIRTING4 VERTICAL VINYL SRIRTJl ( Compontntg & insta.Ilation SCANNED BY St. Lucie County ` ,b 0, ... xvrAcycc o ws" 341ACH 5GR6iwS 16"Amer t t Op URONT SNAPS 0"0 70P BACK �� I�E9• SGij6Mli AND PANEc, cvT� I i ,.,..PANEL-------+• ` -i m4 mm Pee Forr S@ CuQ g - 4W U614TILA- OM `tOP.84&k AND E3l1TTdM Rhtt;; wt '�'! tl�reN StREta/S lis•' Ot 1 -Ls 446 AGGes's�eiE REe'nOV►nriG "rOp,,-- t04T- Alin f LS.IJL Cr] UP ON ak1wat. ) / 11L IS ArrAcNEo ' 0 GRO�wYs WALL FLOOR 5:up?0 � 1 �s Rt - - 02/02/2018 Certification of Engineered Flood gs In accordance with "NFIP, IEMA TB" 2-08, and ASC"BJ$I4-05' I hereby certify that the Crawl Space Door Systems flood vents 816CS,1220CS,, 1232CS, 1616CS, 1624CS, 1632CS, 2032CS, 2424CS, , and 436CS are designed in accordance with the requirements of the NFIP "Flood .Insurance Manual'„(2011) to provide automatic equ ization of hydrostatic flood forces by allowing for the entry and exit of floodwaters, when properly Installed and sized as set fort ,� below. This certification follows the design requirements and specifications established in FEMA Technical Bulletin 1-08, "Openings in Foundation Walls and Walls of Enclosures Below Elevated Buildings In Special Flood Hazard Areas", and the ASCE Standard for "Flood Resistant Design and Construction" (ASCE/SEI 24-05). The actual vent opening measurements were determined and �certifiied by h lt' fi'clstopher :f�tark .Carley, Vir rri�a.:i 1; 4:6066 . 62. �at6"uiataons :ire'baW! sed a sprJ O� 40.e1 �1 ��s, and "Review of certification of Engineered Flood Openings, dated January 16, 2012" prepared by Dr..'Georg Reichard, Associate Professor of Building Construction, Virginia Tech. Design Characteristics Section 2.6.2.2 of ASCE 24 provides an equation to determine the required net area of engineered openings (A,) for a given enc_ loted area Q. This equation is based on the hydraulic formula for the flow rate across sharp edged orifices. I have utilized this equation to cE culate 1) the respected.flow rate through the individual openings between louvers; 2) the flow rate through the main frame operng in case the louver is blown out during a flood event; and, 31 fhe flow raise of w3$i r fl6Wfiri thRotigit lorivei kifadPs following hydraulic short tube theory. The ultimate maximum total enclosed area (A,) that can be serviced by a single vent has then been determined by utilizing the lowest flow rate of the three assessed scenarios for each vent and is listed in Table 1. These values are based on the following assumpfions: • �In absence of reliable data, the rates of rise and fall have been ssumed with 5 feet/hour; • L he (maximum) difference between the exterior and interior loodwater levels has been assumed with 1 foot during base load conditions; o factor of safety of 5 has been assumed, which is consistent ith design pracikes relaieif'to' protecfT&i o€11f a an propertjr; • he net area of openings (AJ as provided by the manufacturer. and *) Model H x W [in] A. [in') AL. [ft2j ❑ 816CS 8 x 16 106 205 El1220CS 12 x 20 237 Soo [) ,1232CS 32.x 32 39¢ A4 0 1616CS 16 x 16 184 395 ❑ . 15240, 16 x 24. 312 670 1632CS 16 x 32 408 835 104 2032CS 20 x 32 630 1240 2424CS ' ' 24 x 24 570 1230 101 ❑ 2436CS 24 x 36 852 1765 This certification will be voided if the following installation reqL frements and limitations are not enforced: Table 1 Maximum total enclosed area (A•) that can be • iThere shall be a minimum of two openings on different sides of served by each individual model based on the each enclose' 8 area; given net ea of engineered openings (A,) • he bottom of each required opening shall be no more than 1ft bvve the adjacent ground level; • o temporary' (e.g. during cold weather) or permanent solid cover may be placed into or over the flood vent that would block hhe automatic entry or exit of floodwaters at any time; • Where analysis indicates rates of rise and fall greater than 5 ft/hr, the total enclosed area as given in Table 1 shall be reduced accordingly to account for the higher rates of rise and fall. Ce> , fytiigbei sl& ProWs—ia ial Name, Title Steve A. Gecl, President, Geci & Associates Engineers, Inc. y `i. • • •:• fv `�� Address 2950 -N 12`n Avenue, Pensacola, FL 32503 Florida Professional En sneer, Lic se o. 33658 No. 33658 License �ti► " o •• �. g • signature /17- STATE OF • Q IdJ entificat on oftBuilding and ]nstalled Flood dents (By Others). ��h, NA� The, flood vent models marked in Table 1*) are being installed at the following building: Buiiding Address �v flood'. ent (No covey) One-pi9ce ventplate with easy to nsert vermin screen Li nd fixed louver. Made o durable PVC/AB5 plastic �no rust or rot) with a IN rei rdant treatment. FEMA c'Ompliant, engi- neered' ertified. No. cover to allow� the automatic entry and exit of floodwaters. Quick and easy to install, Adprotection k ODEL tixW fin) Net Area (in') Eclosed Area _. ❑ �16CS 8 x 16 105 205 : ❑ 1�z20CS 12 x 20 235 5, 500 1;232CS 12 x 32 305 4 645 1;616CS 16 x 16 . 180 395 ❑ r624CS 16 x 24 310 670 1132CS 16 x 32 405 835 ❑ ''032CS 20 x 32 630 1240 K ' 424CS 24 x 24 570 1230 w6CS 24 x 36 850 1765 `ll Crawlspaee boors & Vents Crawlspace Louverslkree s .engineered FEA Flood 'dents