HomeMy WebLinkAboutANDOCHICK ENGINEERINGENGINEERING & TESTING, INC.
Phone: (866) 781-6889 •Fax: (866) 784-8550
trrcu,.florid aengineeringandte s ting.com
250 S.W. 13"' Avenue
Pompano Beach, FL 33069
DATE: 5/27/20 JOB ORDER #: 20-2048Rev.
CLIENT: Onshore RoofinE
ADDRESS: 4401 S.E. Commerce Avenue Stuart Florida 34997
PROJECT: Andochicic Residence Sloped Tile Roof Deck
ADDRESS: 13008 NW Harbor Ridee Palm City, Florida
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONS
Proieet Information:
Mean Roof Height = 30' Exposure: C Basic/Ultimate Wind Speed: V„i,=170 mpli
Length = 60' Category: II Nominal Wind Speed: Vasd=V1,*110.6
Width = 40' Slope: 6/12 (asd = allowable strength design)
Parapet Wall: N/A Residential K� = 0.98, KA = 1.0, Kd = 0.85
Desien Calculations:
Velocity Pressure: q = 0.00256*KX�,KdV2
Velocity Pressure (,d,): q=0.00256(0.98)(1.0)(0.85)(170)2] = 61.63 psf
Velocity Pressure (asd): q=0.00256(0.98)(1.0)(0.85)(170*40.6)2] = 36.98 psf
Width of Pressure Coefficient:
Effective Wind Area: <10ft2
0.1(40') = 4.0'
0.4(30') = 12.0' } use: 4'0"
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) GCP1 = -0.9 1) GCP; = 0.18
2) GCP2 = -1.7
3) GCP3 = -2.6
Design Pressures Based on Vasd:
1)
Field
PI = 36.98*[(-0.9)—(0.18)]=-39.9psf
2)
Perimeter
P2 = 36.98*[( -1.7)
— (0.18)]
= -69.5 psf
3)
Corners
P3 = 36.98*[(-2.6)—(0.18)]=-102.8psf
Attachment Requirements Per RAS 127:
The system is acceptable as approved based on the requirements of Florida Product Approval #
FL7804-R10 for adhering the Entegra Estate "S" low/medium profile clay/concrete tile with
independent large single paddy ICP 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., I-
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 IA of the FRSA/TRI
April 2012 for the required uplift moment and required design pressure, respectively..
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Page 2,5127/20, Job Order #20-2048 Revised
Onsbore Roofing - Adochick Residence
13008 NW Harbor Ridge; Palm City, Florida: FLO A
Per Table 2A of the FRSA/TRI April 2012 for Tile:
Required Aerodynamic Uplift Moment (Ma) = 37.5ft-Ibf; for Zone 3, Exposure C, basic wind
speed of 170mph, mean roof height of 30', and roof pitch of 6/12 or less
Per Table I of ICPAdhesivePolyset Product Approval # FL 6332-R8:
Allowable Overturning Moment = 67ft-Ibf; for a low/medium profile clay/concrete tile adhered
with independent large (2"x10", approx. 54grams) single paddy ICP Adhesive
Required Aerodynamic Uplift Moment < Allowable Overturning Moment
37.5ft-lbf < 67ft-Ibf ACCEPTABLE
Per Table IA of the FRSAITRIApri12012 for Underlayment:
Required Design Pressure = 102.8psf; for mean roof height of 30', 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
102.8psf < 105psf ACCEPTABLE
therefore, the system is acceptable as approved for ALL roof zones for adhering the Entegra Estate "S"
low/medium profile clay/concrete tile with independent large singe paddy ICP 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 # FL7804-R10 and
FRSA/TRI.
Notes:
• Corners and perimeter area dimension shall not be less than a = 4'0"
• 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.
• Wad 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 insp��g4,gd by our field engineer (or authorized representative) or a building
department ins 21r )R�vg "ppliance with specifications.
Sincerely, °�P 0 k1 ,ys;,�s�';;
* No 42--
-- -00.7.14 0=
Mark A. Mesfat(9, P.I,.. "y/E n, *
Florida Engin
Florida Reg. T
Certificate of