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HomeMy WebLinkAboutCertification Of Engineered Flood OpeningsJ Certification of Engineered Flood Openings In accordance with NFIP, FEMA TB 1-08, and ASCE/SEI 24-05 I hereby certify that the Crawl Space Door Systems flood vents 816CS, 1226CS, 1232CS, 1616CS, 1624CS, 1632CS, 2032CS, 2424CS, and 2436CS are designed in accordance with the requirementsof`the NFIP "Flood Insurance Manual" (2011) to provide automatic equalization of hydrostatic flood forces by allowing for the entry and exit of floodwaters, when properly installed and sized as set forth below. This certification follows the design requirements and sp .ifications established in FEMA Technical Bull tin 1-08, "Openings in Foundation Walls and Walls of Enclosures Below Elevated uildings in Special Flood Hazard Areas"; a d the ASCE Standard for "Flood Resistant Design and Construction" (ASCE/SEI 24-05). a actual vent opening measurements w e determined and certified by Mr. Christopher Mark Loney; Virginia PE No. 029000. Ca ulations are based on the spreads ` et formulas, and "Review of certification of Engineered Flood Openings, dated January 16, 201 " prepared by Dr. Georg Reichar , Associate Professor of Building Construction, Virginia Tech. Design Characteristics Y� Z Section 2.6.2.2 of ASCE 24 provides an equation to determine the required net area f engineered o nings (A.) for a given enclosed area (A): This equation is based on the hydraulic formula for the flow rate across sh p edged or ices. I have utilized this equation to calculate 1) the respected flow rate through the individual openings between lout/ s; 2) t flow rate through the main frame opening in case the louver is blown out during a flood event; and 3) the flow rate of wa r wing through louver blades following hydraulic short tube theory: The ultimate maximum total enclosed area (Q that can. be erviced by a single vent has then been determined by utilizing the lowest flow rate of the three assessed scenarios for each.ven n is listed in Table 1. These values are based on the following assumptions: • In absence of reliable data, the rates of rise and fall have been assumed with 5 feet/hour; • The (maximum.) difference between the exterior and interior floodwater levels has been assumed with 1 foot during base flood conditions; • A factor of safety of 5 has been assumed, which is consistent with design practices related to protection of life.and property; • The net area of openings (AJ as provided by the manufacturer. Installation Requirements and Limitations This certification will be voided if the following install ion requirements and limitations are not enforced: Table 1 Maximum total enclosed area e) that can be • There shall be a minimum of two openings on different ides of served by each individual mode based on the. each enclosed area; given net area of engineered openin s (A.) • The bottom of each required opening shall be no m re than 1ft above the adjacent ground level; • No temporary (e.g. during cold weather) or per anent solid cover may be placed into or over the flood vent tha\be block the automatic entry or exit of floodwaters at a y'time; • Where analysis indicates rates of rise and .fall greater than 5 ft/hr, the total enclosed area as given in Table 1 shduced accordingly to account for the higher rates.of rise and fall. Certifying Design Professional ���II1111/ *) Mod x W [ I Ao [in'] AL [ft'i ❑ 8 CS 8 x 106 205 ❑/1616CS 20eS 12 x 2 237 Soo ❑232CS' 12 x 32 306 645. ❑ 16 x 16 184 395 1624CS 16 x 24 312 670 El 1632CS 16 x 32 408 835 0 2032CS 20 x 32 30 1240 ❑ 2424CS 24 x 24 0 1230 ❑ 2436CS 24 x 36 85 1765 Name, Title Steve A. Geci, President, Geci & Associates Engineers,'Inc. ci�,`�(, • ...;• %7 W .• BEN •. °b� No. :* " •* � ^ • � �� Address 2950 N 12`h Avenue, Pensacola, FL 32503AV License Florida Professional Engineer, Lice se o. 33658 9 _ �,� Si nature � � :MATE OF�� Identification of the Building and Installed F1ood'Vents '(By Others) '�X% NAL The flood vent models marked in Table 1*) are being:installed at the following building: Building Address J, GENERAL NOTES: I- TI-ItALUM. Ait OTANOD 66OWI) ON tio.m., vocumrtlZ AFM DV50410 1.4 ACCQRD'ANCI. IN HIGH VIIl.00TYI-ILIRMCA-lt o#Tfie FBC 5th EDITION (901,4) FOR CieStMPUPP06CS Alr,STAND 5CI ICOVI C. 'd- MNO LOADS AM DETORMWED IN ACCOFWANCE W? Tiff: ASCE 1, 10; S� WO INCRFA59 IN ALLOWAfte 5#X*55,HA5 WN CON51WRED IN Tliff 0r5fGH, OF THE59,6TAWM POR Tfil MAI, 001,11) PRF59URE 5f'tQWN IN IIII!, Air, omm 56.ir0utt� $• ftir:mAximum 5t2E Atio WEIGHT Of AC UNIT5 15 519)Vvm. IN t1ir tvc $TAt)D sciieDuM G- prnR to rac, FoR m1140TAND MCAR fflrofil, TflF CONTRACTOR SMALL VgFtIFY f'XI5tlNG 51'TWCTUPE 4RITH $UPfRIMP05W LOAD 511ALLVERIPY CAPACITY OF FXt5Tmr.'I5TRUCTUP9TO aUPVORT NC'� 5T440 WADS BHOV�N IN AC STAND 561MULC (tAD�f #,2): ,a- All:AlELDING SMALL Be vearo%meo %�j SS% PILLeR ALWy. UtjiLC55 otmgwvisww*' U. 4UMINUM MIEN 19.1NACCOAPANCVW/ TrIC P,f3,C. 59qlOPI 1620,6 LAr W T� T"' I ARE QU?r-ot'll"ImlofJ5 011? R �;i�AC No LOA051%11 CoiIorip'tjItjrtill 1 ! , tM7 FMVIDE VIBRATION ISOLATOR F05 PETYrEvill I - VP ALUM. M; 014 THl!�t,DOQVMI:Nt5 ARC f7r'5lGWW IN AMMPAIld YOMI.W vCWCIrY 'HUFRICANU2010; I"AMINOW) CP THP r LTG STH EDITION (9.6 1 4 tfIF PPOV1510M) .OP THC A5CE- 10. 2, LPAD-Pt . NOR CRITMiki WND1.011011 W17.10 - W ST" WITION M 14) vaor-1 Ty "140 mmukel, 180 mpti, urmun; I upoupt V 152 51IMT 513Ar UFOOM IV ISM SHfft 5.3D) r,o: 0,90 6cf-S'l VOALAT1101,1.0,05, Ott- 1.5 TIOR MUTT LOAM .3, 4U.M. ALLOWAMr!EME55Vfj (ALUMINUM ALLOY D516NATIONCGOG I -TQ A) compAimlyr raD STRguall. rvya9 F3f (I) 135 ral b) I Di'SILE mo 5100m). fTy- .9 rv,(,) 135 ral G) MIKE 1ATIMATE $7016M.Nd 42 K51 .6) 6h9AR M0 $MENGTH, F51'- 20 r4l_ M 00sT f5u- 27,01 ATE V) POF MUBM t7 MAY, 51=6 WAR I' OP A 4 - I'MPR0FO!XD AWMEXY LAYPOMWI! 13-110P AX. 4PPF' OX. PVCNew 0149AM, s' lMv%Tlml Or' V59. IAX. Ots"n, I vMPL011051 expMRI-vt - 0 WWI 1 % WIDA wosupx Cr oiuponl- (m.ipsnum .VMDIRTo TUNIEL TEST MT AVAIM, of mu, WT ofor WNW 1.1%, V1,14,10II W"!WCO Lt. (47YWX30'I Mvlpow - mom w T 1 iR, CONTRACTOR 5HAL4 VOWY 0NHC`CTIQq OFVC1.4IFqtt'TO rpwog pom N'Or 10.OM Tft, 4 WARRAVY. SMALL COMPLY WITIV 0 E,M.A. aYYGIPICATIt4N5 FOR 14 COABTAL APPMOINON 0 %OVIVA1.P10 TOUPOSUni . '0A . WA5TAL CONDITION -S M ALL APPLY T 0 Ulj t L u) I w � for, At t. o- r'PO.',,) TO 0 110 W N E W P, A'pl J Ca UP TO 660 FT bizA� mmisira wmut)I CIPAUTIVS. INUNNE) APP�IWIOIJ 1-5 WUIVALrkll To Urown Pla STAND 5y ION FROTOCOL.-: I- .4,114V R*TWATe 4 OVEOLL vIDr,.ijKIQQI it VA IM YOU A1112 NAMING TO'015TALL tl,Wl aTANU, b. Atso UJI. ING WTiON A5 COA5TAL (FCA YPQBUPZ -D') OR 114LAND =P05UPT' 11 COA5TAk CON1517 0 L APPLY TO poll.01.11S LdCATE!D PROM TO 5110ftl UIN P611 A 015TAI, UP TO 600 FT OIZ 2U T"RI BLOG filllCfl T WIHICHMIZ 1-5 GMATCR OR AD DEMO) OY. 2. ONCf-, TI if! OWRALL Mm. 05 MURNIUMD. GO TO SHW 1543A -j 53-3B. .4 5MMY Tic C0RFXsroT$Qi.,4G STAND Mkvlf; Iwo AuD Aimmok. m —1 DmiS 1-U6110 9 ,4 4 . /65emmy NO. s A55DAWX No10 LFGf) STAND' 1611 of LCG5 STAND'tr (04 TP SPAC9 UWTATIOt4 A559MCjY No 5110 LEG WAI 6 NOT 5119WO ABOVE. PI. P9119R'1`0 Stigti- 09. �5_1 IPft,15TAUA ION PIACPAM, 3 HA MIA 5DING A5,"I'MMY 140. P, -3 t LEGS TA 1 ID, ALUM, 5TAND%N0TI!5- -VNIIJVAM, V.1 r - 11 flog Tile, C011PRIUKAflMo 5HOW11CM5.1.Awn or 72r Cm% w1wrEff owr(i "Ital ;wlly kh1q, OR it to Mcce f{ I (,I Halt( A .2 2 i; MINa, I Miff, KwIff W141 Qz) If, h lit"V ttl ik f., r p owl"'I fillft 10 iNt %R .9.jj We?'Xj'Al W. AW[n (60,1 .1C. AlI.Ql TY11. DRAW A55PMULYMAIL. U,VQ02 Mv or ROW NW15;1. CO.' .1;*17,11,11W.IX �,. q !) it! ENL, 9,uc/; Sri si A ANG10, •MKIIAM, -No % % .2 ANGLE f,.,x "Tc. k, toll TIM FRAME ELEVATION 1�11 PLATF OFTAIL CONN. DRUIL ii NTW; B/L (A55EM5LY 1 21314 f- 5) _N11 v FN UA51-1' PLAT 6TIM19NM3 MR _! F)—, . PP nClittt fit(. rx-,Av,e 014 1)(21", 'fir APplif"I"AIMN, flip 1: lip, 4 I.-- 1BLE # I r REQUIRED DESIGN PRE55URE5 ON A/C UNiTS BASED ON 6LDG. HEIGHT (0.G W) (51TE SPECIE P�CPOSURE "C" (INLAND) V- 180 MPH t1t,Irllf l l ckmrf!AI)t 10 1(t• Or m"' 1174t1 lt3G �+1,, 'Haul Pt nPY•2Hr"APT"'�tsl't Hfi .t?P737ft.It+'Atl F(,f ft Hr..Lai YJI[�t{.^77 IT GONFdHi'f771 GPI'/J! P,t)ft FXlp1T 'tf_?,3 Pt '1T1PtaH,11. '9 i't" iu..f:54: +x;},1i ilflf:d 1..5 t•}T .F"JG.t 1;Jl' f•fA,•[Fj6' If.l',3 f^]t' tu2 f":fF IG4.`+t^-,b 7i1:1 t;o1' 17a,2,1,0P Ivs rar t•T 1 60.5 F2:," L {J f`,r •8.? 11:I- 1 717 PTte 71+.r l:P I6f .S t•F)f- � L13.J 1'wY -0A'TPJP _ TABLE-12. NO 5TAN0..5CHERULE eXPOSURE "CI' (INLAND) ('); V-- 180 MPH O Buddincl Hal hk•9 100, nJ T,F sa2Y 1 fI •+, U71 t) t/tl?• 't751 c (IJ fs!7C• t 1m} rul:K a!:; 1 It T III llt .113 M '-.Toy ' HC+rrii (nk Ut:iT r1gxJ1,'tts, 157!ti#1T Carol L1A} tt."^,)9UPrlFtR:ACtfO:i9d••- ) it j � trp•a1 r u'yryf rs (r,,..+t 17 11/"1 wJ) CYr T4a ) ) L1-Aril 3, te':t "I Co. ), t;H: 15.--t0 ) H r.1.,Ttlf f I,fixi,!!tt1.l85 rt .irrltl."1'9K'1:ftnr.1 t.01d 3,G E It 11 t J -WE tfIVA 1101 M-L It VAC IOUT) IfIr .tT471t1 f:YWetf CAN tlC tl:t F:C A:h TO A; PY ALI IN3 ?/-V Y tl'14It.+, ,. 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IA+ twm) 1} t{ih Y im ttt CHIT %ir t.;,' A CM) t 1) I {4k'P;5% `JP I UAM 13A5t' PLAT f �:pNN, Df?YAiL OU �if;C1..Jt�IST;i t• r/ •+ Afa1 t nt rut;.o- frr+l ipta '1 �; 3 —M N CONNECTION MAiL• 55 A11) I t•1 rn agg:Ui rrti rr.} z a, ;.Is 10D aRDIA1 r :5 "V13W Fi. OgN3ltci 3 el a t1 Anl'jf:,frR ILI ivol 1 Afi cujl`ItLlion Til>dm-i;?)•T PJi VNts2 5f.;C$6C„(15,(kxN11iT%S' .A it TABLE N2:A/C STAND SCHEDULE EXPOSURE T" COA5TAL M ; Vd 180 MPH 0 < building Hel htt O' ,IiU rY 1TVU li �v. b-, rl i,,0 { i, .f!'!D - ttLF�. 'trrllrT ri fit 11! MAX 4it7 r•Flfltt f:nl Umv rnAX.M1ttf. ,V.Cfin7- tI'FT htA� Vnll'J :iUYY1J8T ittnCikr:l� 1••1 r jf,I �1 , is IhTip) v (t^�I'�3' Af {"•. n+) . . r.PY1 Ar4 I 11:.7RN1 rkr/sS Ey)A 'i? t•••'. Ci191jj7 A g ;N.tF - -11 I;Ct : Utlp. 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