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BY ENGINEERING & TESTING, INC.
Phone: (866) 781-6889 *Fax: (866) 784-8550
www.floiidaengineering,mdtegting.com
250 S.W.13'h Avenue
Pompano Beach, FL 33069
DATE: 6/27/18 JOB ORDER #: 18-2685
CLIENT: Tradewinds Roofing, Inc.
ADDRESS: PO Box 13208 Fort Pierce, FL 34979
PROJECT: Growever Investment, LLC Flat Wood Non -Insulated Deck
ADDRESS: 228 NE Prima Vista Blvd. Port Saint Lucie, FL
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONS
Proiect Information:
Height = 10' Exposure: C Basic/Ultimate Wind Speed: Vuif=170 mph
Length = 13' Category: II Nominal Wind Speed: Vasd=Vuit*q0.6
Width = 10' Slope: < 7° (asd = allowable strength design)
Parapet Wall: N/A Residential KZ = 0.85, Kzt =1.0, Kd = 0.85
Design Calculations:
Velocity Pressure: q = 0.00256*KKOCdV2
Velocity Pressure (uit): q=0.00256(0.85)(1.0)(0.85)(170)2 = 53.45 psf
Velocity Pressure (,d): q=0.00256(0.85)(1.0)(0.85)(170*40.6)2 = 32.07 psf
Width of Pressure Coefficient: 0.1(10') = 1.0' FILE
0.4(10') = 4.0' )use: TO" COPY
Effective Wind Area: <10ft2 b'' i
For parapet height three feet 3' or larger, zone three 3 shall be treated as zone two
p p g () g () �)•
External Pressure Coefficient:
1)
GCP1 =
-1.0
2)
GCP2 =
-1.8
3)
GCP3 =
-2.8
Internal Pressure Coefficient:
1) GCPi = 0.18
Q w
Quality Sli �Aii .Issurance
A
r Page 2, 6/27/18, Job Order a=,_,A685
Tradewinds Roofing, Inc. FLO A
Growever Investment, LLC
Flat Wood Non -Insulated Deck
228 NE Prima Vista Blvd.; Port Saint Lucie, FL:
Design Pressures Based on Vasd:
1) Field
P1 = 32.07*[(-1.0)
— (0.18)]
_ -37.8 psf
2) Perimeter
P2 = 32.07*[(-1.8)
— (0.18)]
_ -63.5 psf
3) Corners
P3 = 32.07*[(-2.8)
— (0.18)]
_ -95.6 psf
Attachment Requirements Per RAS-117:
Based on the requirements of Florida Product Approval # FL1046-R8, Appendix 1, Page
6 of 22, System No. W-11, with a maximum design pressure of-52.5psf; the following
are our recommended fastening patterns to attach the proposed two plies of PermaPly 28
or Ventsulation base sheet to the minimum 19/32" plywood deck utilizing approved 11
ga. annular ring shank nails and 32ga., 1-518" diameter tin caps:
Field: 9" o.c. @ 4" laps and 2 staggered rows 12" o.c.
Perimeter: 9" o.c. @ 4" laps and 3 staggered rows 9" o.c.
Corners: 9" o.c. @ 4" laps and 4 staggered rows 9" o.c.
Notes: Corners and perimeter area dimension shall not be less than a = 3'0"
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 2017 Edition.
Wind load calculations based on ASCE-7, 2017 FBC and information
provided by client. Client is responsible for verifying existing/proposed
conditions/decks 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.
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Sincerely, ��\\ pJ�`_e
Mo. 4820 �O
Mark A. ]!jejano, P.E
Florida E firing eRing,
Florida Re ® •4 R%'OP' C�'N
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