HomeMy WebLinkAboutARNOLD ENGINEERINGF1,0tt1X3A
ENGINEERING & TESTING, INC.
Phone: (866) 781-6889 *Fax: (866) 784-8550
www.floiidaengmeeringandtesting.com
250 S.W.13`h Avenue
Pompano Beach, FL 33069
DATE: 5/22/20 JOB ORDER #: 20-2098
CLIENT: Onshore Roofing
ADDRESS: 4401 S.E. Commerce Avenue Stuart, Florida 34997
PROJECT: Anderson Residence Sloped Tile Roof Deck
ADDRESS: 8007 Plantation Lakes Drive Port Saint Lucie, Florida
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONS
Proiect Information:
Mean Roof Height = 20' Exposure: C Basic/Ultimate Wind Speed: VWc=170 mph
Length = 81' Category: II Nominal Wind Speed: Vasa=Vuit*40.6
Width = 76' Slope: 6/12 (asd = allowable strength design)
Parapet Wall: N/A Residential KZ = 0.90, Kzt = 1.0, Ka = 0.85
Design Calculations:
Velocity Pressure: q = 0.00256*Kj<�.KaV2
Velocity Pressure (ult): q=0.00256(0.90)(1.0)(0.85)(170)2] = 56.60 psf
Velocity Pressure (.d): q=0.00256(0.90)(1.0)(0.85)(170*40.6)2] = 33.96 psf
Width of Pressure Coefficient:
Effective Wind Area: <1 Oft
0.1(761) = 7.6'
0.4(20') = 8.0' } use: 8'0"
For hip roofs with a roof slope of 25 degrees or less, zone three (3) shall be treated as zone two (2).
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 Vasd:
1)
Field
P1
= 33.96*[( -0.9) - (0.18)] = -36.7 psf
2)
Perimeter
P2
= 33.96*[( -1.7) - (0.18)] = -63.8 psf
3)
Corners
P3
= 33.96*[( -2.6) - (0.18)] = -94.4 psf
Attachment Requirements Per RAS 127:
The system is acceptable as approved based on the requirements of Florida Product Approval #
FL7473R8 for adhering the Eagle Bel Air flat profile clay/concrete tile with independent large
single paddy ICP AH -160 foam adhesive to the self adhered Polystick TU Max (back -nailed
within the selvedge -edge side laps using 12 ga. x 1-1/4" ring shank nails through 32 ga., 1-5/8"
diameter tin caps spaced 12" o.c.) to the min. 15/32" plywood deck (primed with WB -3000).
Section 6.3.3 of the tile product approval references Tables 2A or 2B and lA of the FRSA/TRI
April 2012 for the required uplift moment and required design pressure, respectively.
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Quality Q QA i8!.4murance
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f Page 2, 5/22/20, Job Order #20-2098
Onshore Roofing- Anderson Residence FLO A
8007 Plantation Lakes Drive; Port Saint Lucie, FL:
Per Table 2A of the FRSAITRIApril2012 for Tile:
Required Aerodynamic Uplift Moment (Ma) = 34.4ft-lbf; for Zone 3, Exposure C, basic wind
speed of 170mph, mean roof height of 20', and roof pitch of 6/12 or less
Per Table 1 of lCPAdhesive Polyset AH -160 Product Approval # FL 6332-R8:
Allowable Overturning Moment = 112ft-lbf; for a flat profile clay/concrete tile adhered with
independent large (2"x10", approx. 45grams) single paddy ICP AH -160 Adhesive
Required Aerodynamic Uplift Moment < Allowable Overturning Moment
34.4ft-lbf < 112ft-lbf ACCEPTABLE
Per Table IA of the FRSA%TRI April 2012 for Underlayment:
Required Design Pressure = 94.4psf; for mean roof height of 20', exposure C, basic wind speed of
170mph, category II building having a 2:12 and greater pitch
Per Page 6 Option 4 of Polyglass Roof Underlayments Product Approval # FL 5259-R29:
Maximum Design Pressure = 105psf, for self adhering the Polystick TU Max (back -nailed within
the selvedge -edge side laps using 12 ga. x 1-1/4" ring shank nails through 32 ga., 1-5/8" diameter
tin caps spaced 12" o.c.) to the min. 15/32" plywood deck (primed with WB -3000)
Required Design Pressure < Maximum Design Pressure
94.4psf < 105psf ACCEPTABLE
therefore, the system is acceptable as approved for ALL roof zones for adhering the Eagle Bel Air flat
profile clay/concrete tile with independent large single paddy ICP AH -160 foam adhesive to the self
adhered Polystick TU Max (back -nailed within the selvedge -edge side laps using 12 ga. x 1-1/4" ring
shank nails through 32 ga., 1-5/8" diameter tin caps spaced 12" o.c.) to the min. 15/32" plywood deck
(primed with WB -3000) based on the requirements of Florida Product Approval # FL6332-118 and
FRSA/TRI.
Notes:
• Comers and perimeter area dimension shall not be less than a = 8'0"
• 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.
• Wnd 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 :}ppr&mlw,,,,
• All work shall be iengmeer (or authorized representative) or a building
department inspe, vi specifications.
Sincerely, = •' No. 48202
Mark A. Mesiano, PX -P ' •,FLnp !QP.•\�tc�
Florida Engineering & $Inc,: • G
Florida Reg. No. 48202 ;.'jONA!_
Certificate of Authorization No.1592� "'