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DATE: 6/1.7/16 JOB ORDER#: 16-1915
CLIENT: Freedom Roofers, LLC
ADDRESS: 5575 US 1 - Suite# 1 & 2 Vero Beach,FL 32967
PROJECT: Bill Sunderlin Sloped Roof Deck(Slope: 4/12)
ADDRESS: 130 Del Monte Street Fort Pierce,FL
FBC 2014/ASCE 7-10 DESIGN PRESSURE CALCULATIONS
Project Information:
Mean Height= 15'Max. Exposure: C Basic/Ultimate Wind Speed: Vint=170 mph
Length= 66' Category: II Nominal Wind Speed:V.d=Vint**6
Width= 40' Slope: 4/12 = 18.4° (asd=allowable strength design)
Parapet Wall: N/A Residential Kx= 0.85,Kzt= 1.0,Kd=0.85
Design Calculations:
Velocity Pressure: q = 0.00256*KZKztKdV2
Velocity Pressure (ult): q=0.00256(0.85)(1.0)(0.85)(170)2] = 53.45 psf
Velocity Pressure(ad): q=0.00256(0.85)(1.0)(0.85)(170* 0.6)2] =32.07 psf
Width of Pressure Coefficient: 0.1(40') = 4.0'
0.4(15') = 6.0' } use: 4'0"
Effective Wind Area: <10ft2
External Pressure Coefficient: Internal Pressure Coefficient:
1) GCP 1 = -0.9 1) GCP; = 0.18
2) GCP2 = -1.7
3) GCP3 = -2.6
Design Pressures Based on Vasa:
1) Field PI = 32.07*[(-0.9)—(0.18)] =-34.6 psf
2) Perimeter P2 = 32.07*[(-1.7)—(0.18)] =-60.3 psf
3) Corners P3 = 32.07*[(-2.6)—(0.18)] =-89.2 psf
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Page 2,6/17/16,Job Order#16-1915
Freedom Roofers,LLC-Bill Sunderlin Residence F11,0VbVnA
Sloped Roof Deck(Slope: 4/12)
130 Del Monte Street; Fort Pierce,FL:
Attachment Requirements:
Based on the requirements of Florida Product Approval # 17796.6, Table A with
maximum design pressures of -108.5psf and -156.5psf; the following are our
recommended fastening patterns to attach the 26 ga. 5V Crimp Roof Panel to the
minimum 15/32 or greater thick plywood decking utilizing #9-15 x 1-1/2" WoodZac with
Zac Head with sealing washing through panel rib with 1/4" minimum penetration through
plywood at the following fastener patterns and fastener spacing:
Zone(s) Field(1) , Perimeter(2)&Comers (3)
Max. Total Uplift -108.5 psf
Design Pressure
Fastener Pattern Panel Rib
Fastener Row Spacing 12" o.c.
Notes: Comers and perimeter (edge, hip, & ridge) area dimension shall not be less
than a = 4'0" (Zone 2: Perimeter is a 4'0" wide strip, Zone 3: Corners
are 4'0" x 4'0")
Our engineering attachment analysis is limited to uplift resistance only,
therefore, it does not include waterproofing or aesthetic concerns as
applicable.
Contractor to verify that the fastening patterns meet manufacturer's
requirements for issuance of a warranty (as applicable).
All work shall be in compliance with the local building code product
control notice of acceptance and manufacturer specifications and Florida
Building Code 2014 Edition.
Wind load calculations based on ASCE 7-10, FBC 2014 and information
provided by client. Client is responsible for verifying existing conditions as it
pertains to the above provided product approval.
All work shall be inspected by our field engineer(or authorized
representative)or a building department inspector to verify compliance
with specifications
Sincerely,
Mark A, Mesiano,P.E.
Florida Engineering& Testing, Inc.
Florida Reg.No. 48202
Certificate of Authorization No. 6923