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HomeMy WebLinkAboutTROP STL ROOF WIND PRESSURE AND ATTACHMENT DESIGNFL. Cart. of Auth. #32207 Florida Leading Roof Consulting Source Specification & Design Visual Condition Surveys Roof Asset Management Programs • Quality Assurance Inspections ROOF WIND PRESSURE & ATTACHMENT DESIGN CLIENT: SUTTER ROOFING CO. Page 1 of 3 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 := 204 FT. SLOPE: "r" ( RISE in 12) r := 6 ENCLOSURE CLASS.: ENCLOSED BLDG. RISK. CATEGORY: If 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: 0.613 + 0.6W Neglect Deadload. (Sec.2.4.1), is Wind Uplift, 0.6W EDGE ZONE MULTIPLIER: z-0.40 = I T2 W410 = 20.4 Use Multiplier a := 20.4 METAL ROOF: _ 22-GAUGE STEEL CORRUGATED PANELS CALCULATE VELOCITY PRESSURE qz := 0.00256-Kz-Kzt•Kd-V2 qz = 59.025 PSF SLOPE 0 atan(r 12) = 26.565-deg D := 0.60 DATE: 11-16-2020 RE -CS W 19-273-corrugated2 EXPOSURE C z min = 15 ft. PRESSURE COEFFICIENT 2 9.5 Kz := 2.01. 900� Kz = 1.06 GABLE 7 < ,0 < 27 deg COMPONENTS & CLADDING: EXTERNAL COEFFICIENT GCp From Figure 30.4-513 INTERNAL COEFFICIENT: GCpi From Figure 26.11 -1 CALCULATE UPLIFT PRESSURES: ( perASCE 7-10 ) P:= Dqz-[(-GCp) + (CCpi)] 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 FL Cert. of Auth. #32207 Florida's Leading Roof Consulting Source Svecification & Design! Vi,%W Condition Sw-veys • Roof Asset Management Programs • Quality Assurance Inspections ROOF WIND PRESSURE & ATTACHMENT DESIGN TYPE OF ROOF SYSTEM: 22-GAUGE STEEL 7/8" CORRUGATED PANELS Page 2 of 3 DATE: 11-16-2020 RE -CS I #:19-273-corruga ted2 ROOF SYSTEM ENGINEERING DATA: Mfg/Type: 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: FSl := 6 IN PS2 := 30IN FS3:= 15 IN TYPE OF FASTENER: #12-24 x 1-1/4" BLAZER TEK-5 SCREW TO STEEL JOIST 1/4 x 14 x 7/8" DPI/LAP w/VRT LAP SCREWS SUPPORT MATERIAL: 118"-1/4" STEEL JOIST CONSTRUCTION TYPE: REROOF METAL ROOF: 22-GAUGE STEEL CORRUGATED PANELS DESIGN FASTENER VALU ES ( fy ); w-6 ft] := DPI 144) =—130,181 w•6 fv2 = DP2 144 =—264.669 NOTE: PANELS ARE, 22 GA -STEEL, NOT 24 GAUGE AS PER THE APPROVAL.. A SUBSTITUTION HAS BEEN MADE USING THE 22 GA. PANEL UNDER THER PREMISE THAT THE RESULTING ATTACHMENT IS STRONGER THAN A 24 GA_ PANEL, WHEREAS EITHER MEETS OR EXCEEDS THE REQUIRED CRITERIA. RATIONAL ANALYSIS AS PER FBC 2017: Sec 1512.2.3 DESIGN FASTENER SPACING: TRIAL CALCULATIONS: DFS :_ 1}PFS PI -FIELD DPI = —78.6 > P1 = —38248 60" JOIST SPACING 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 AT6" Q.C. PARALLEL TO ROOF SLOPE. ALONG PANEL RIB INTO STEEL JOISTS SPACING OF 5.0' O.C. MAXIMUM. SPACE SIDELAP FASTENERS AT30" Q.C. PERIMETER ( Zone 2 ): ATTACH FASTENERS AT6" O.C. PARALLEL TO ROOF SLOPE. ALONG PANEL RIB INTO STEEL JOISTS SPACING OF 5.0' O.C. MAXIMUM.. SPACE SIDELAP FASTENERS AT 15" O.C. CORNER (ZONE 3 )-. ATTACH FASTENERS AT6" O.C. PARALLELTO ROOF SLOPE. ALONG PANEL RIB INTO STEEL PURLINS SPACED ATOF 2.0' Q.C. MAXIMUM. SPACE SIDELAP FASTENERS AT 15" Q.C. DIMENSION OF EDGE ZONES: PERIMETER WIDTH: u = 20.4 ft. CORNER LENGTH: a = 20.4 ft. The Roof Code Provisions in Chapter 15 of the Florida Building Code 2017 & Factory Mutual 1-49 Apply To This Work. PANEL & FASTENER DETAILS METAL ROOF: _ 22-GAUGE STEEL CORRUGATED PANELS Page 3 of 3 DATE: 11-16-2020 RE-CSW 19.273-corrugated2 3 lam'" i W*�t `f - = - t tG MR" PCOMai mw DECK FASTENER TO STEEL JOIST St. VERIV sums cap mew TfthSFA._ Cola 1,Q(>3 r6 alit ,spay SIDE LAP FASTENER The Roof Code Provisions in Chapter 15 of the Florida Building Code 2017 & Factory Mutual 149 Apply To This Work. Digitally signed by �F Donald J Flood Date: gB�ONAI�� 2020.11.13 22:46:19 -05'00'