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HomeMy WebLinkAboutroof wind pressureI. 00 Ito b FL Cert. of Aut6. 932207 Florida's Leading Roof Consulting S=ce ST. LUCIE COUNTY BUILDING DIVISION REVIEWED FOR COMPWAAICE REVIEWED BY DATE O PLANS AND PERMIT MUST BE KEPT ON JOB OR NO INSPECTION WILL BE MADE ROOF WIND PRESSURE & ATTACHMENT DESIGN CLIENT: SUTTER ROOFING CO. PROJECT NAME: TROPICANA FEED MILL -WAREHOUSE PROJECT ADDRESS: 6500 GLADES CUT-OFF ROAD FORT PIERCE, FLORIDA 34981 PROJECT DATA: MEAN HEIGHT: z:= 43 FT SHAPE: GABLE WIDTH: W = 104 FT. SLOPE: "r" ( RISE in 12) r:= 6 ENCLOSURE CLASS.: ENCLOSED BLDG. RISK. CATEGORY: II REGION: GULF SHORELINE WIND VELOCITY: V 160 MPH EXPOSURE: C TOPO. FACTOR: H / Lh < 0.05 USE Kzt 1.0 DIRECTIONAL FACTOR: Kd:= 0.85 DESIGN CRITERIA: FLORIDA BUILDING CODE EDITION 2017 WIND DESIGN perASCE 7-10 Method 2: Analytical Procedure Attachments as per Factory Mutual FM 1-29 DESIGN SCOPE: ROOF CLADDING ATTACHMENT Basic Combinations Sec 2.4.1 Load Combination #7: 0.6D + 0.6W Neglect Deadload. (Sec.2.4.1), is Wind Uplift, 0.6W EDGE ZONE MULTIPLIER: z•0.40 = 17.2 W-0.10 = 10.4 Use Multiplier a := 10.4 METAL ROOF: _ 22-GAUGE STEEL CORRUGATED PANELS CALCULATE VELOCITY PRESSURE qz:= 0.00256•Kz•Kzt•Kd•V2 qz=59.025 PSF D:=0.60 SLOPE 0 r atan 2) 2 — 26.565-deg COMPONENTS 8, CLADDING: 1 Page 1 of 3 DATE: 12/04/2019 RE -CS I #:19-273-corrugated EXPOSURE C zmin=15ft. PRESSURE COEFFICIENT Kz = 1.06 2 z 9.5 900 GABLE 7 < 8 < 27 deg EXTERNAL COEFFICIENT: GCp From Figure 30.4-5B INTERNAL COEFFICIENT: GCpi From Figure 26.11 -1 CALCULATE UPLIFT PRESSURES: (per ASCE7-1o) P:= Dqr[(—GCp) + (GCpi)] FIELD PI := D.qz-[(-0.9) + (-0.18)) PERIMETER P2 := D•qz;[(-1.7) + (-0:18)] CORNER P3 := D•qz•[(-2.6) + (-0;18)] UPLIFT PRESSURES: PI =—38.248 psf P2 = —66.58 psf P3 =—98.454 psf U� - gj tt 'Ili ,i FL. Cart. of Autlu 932207 Florida's Leading Roof Consulting Source Soarfi t' &Des' •V' al C"ditiSu,,eys•Roof AtMa tP1 �•Ou 1'tyAssu Insoerfi ROOF WIND PRESSURE & ATTACHMENT DESIGN TYPE OF ROOF SYSTEM: 22-GAUGE STEEL 7/8" CORRUGATED PANELS Mfgrrype: PETERSEN ALUMINUM CORP Florida Product Approval: #23953.1 22 GAUGE CORRUGATED STEEL 39.75" WIDE PANEL DESIGN PRESSURES: DPI:=-78.6 PSF 5-FOOT JOIST SPACING DP2 := —159.8 PSF 2-FOOT PURLIN SPACING PANEL WIDTH: w:= 39.75 IN FASTENER SPACING: FSI := 6 IN FS2 := 301N FS3 := 151N TYPE OF FASTENER: #12-24 x 1.114" BLAZER TEK-5 SCREW TO STEEL JOIST 114 x 14 x 718" DPIILAP wNRT LAP SCREWS SUPPORT MATERIAL: 11W-1/4" STEEL JOIST CONSTRUCTION TYPE: REROOF Page 2 of 3 DATE: 12/04/2019 RE -CS IM 19-273-corrugated METAL ROOF: 22-GAUGE STEEL CORRUGATED PANELS DESIGN FASTENER VALUES (fv ): w6 fvl := DPI -I 144) 130.181 i rw 6 fv2 := DP2.1 144) _—264.669 NOTE: PANELS ARE 22 GASTEEL, NOT24 GAUGE AS PERTHE APPROVAL. A SUBSTITUTION HAS BEEN MADE USING THE 22GA. PANEL UNDER THEIR PREMISE THAT THE RESULTING ATTACH MENTIS STRONGERTHANA 24GA.PANEL, WHEREAS EITHER MEETS OR EXCEEDS THE REQUIRED CRITERIA. RATIONAL ANALYSIS AS PER FBC 2017: Sec 1512.2.3 DESIGN FASTENER SPACING: TRIAL CALCULATIONS: DP.FS P1-FIELD DPI =-78.6 > PI=-38.248 60"JOIST SPACING DFS := P P2- EDGE DPI = —78.6 > P2 = —66.58 60" JOIST SPACING P3- CORNER DP2 = —159.8 > P3 =—98.45� 24- PURLIN SPACING ATTACH TO 22 GAUGE CORRUGATED STEEL PANELS AS FOLLOWS: FIELD ( Zone 1 ): ATTACH FASTENERS A 6" O.C..PARALLELTO ROOF_SL._ OPE. ALONG PANEL RIB INTO STEE�,JOISTS SPACING OF 5.0' O.CFMAXIMUM.�� SPACE SIDELAP FASTENERS AT.30" O.CC , PERIMETER (Zone 2 ): ATTACH FASTENERS AT6" O.C. PARALLELTO ROOF SLOPE. ALONG PANEL RIB INTO STEEL JOISTS SPACIINGfOL F 5 0"O:C: MAXIMUM.. SPACE SIDELAP FASTENERS AT15'=O.C: � ` CORNER (ZONE 3 ): ATTACH FASTENERS AT-O PARALLEL TO ROOF SLOPE.__ ALONGPANELRIB INTO STEEL PURL/NSSPACED ATOF•2.0'tO.C.MAXIMUM, SPACE SIDELAP FASTENERS AT15'_O.C... DIMENSION OF EDGE ZONES: PERIMETER WIDTH: a = 10.4 ft. CORNER LENGTH: a = 10.4 ft. The Roof Code Provisions in Chapter 15 of the Florida Building Code 2017 8 Factory Mutual 1-49 Apply To This Work. I '- j 14,1 R. Cert. of Auth. #32207 Florida's Leading Roof Consulting Source ' Smifiti &Design • V' 1 Cn d'0 S • Roof AsseVVEnagm.tlh e • OualiNAssura 'colti� PANEL & FASTENER DETAILS METAL ROOF: Page 3 of 3 _ 22-GAUGE STEEL CORRUGATED PANELS DATE: 12/04/2019 RE' CSI#:19-273-corrugated 71{0" CORRUGATED �S9'itY+°iN�Tlfii,�I�Bfidn3FCpB a� eiwsu�e H3 _ _ lit5¢ pt�l f rt>p I tl I . DECK FASTE3+IEP, , .E -' f0 STE_EL JOfST _ BLAm'tPSlalrtzss Cap Head rit5ealingVtasht`r 114057i%iV1CSTSVWSC yM9� 135: TRF.SFliL" Cba�t1 1103Hts Salt Splay , SIDE LAP FASTENER' The Roof Code Provisions in Chapter 15 of the Florida Building Code 2017 & Factory Mutual 1-09 Apply To This Work. Digitally by signed Donald J 1Flood .� Date: 2019:1>2:05+ 09:01:16 ° -05'00'