HomeMy WebLinkAboutEngineering TURQU01 E Engineering, LLC
Structural Engineering,. Design & Testing, CA#28948, NOA#18-11,14i06
901 Forest Hill Blvd.,W Palm Beach,FL 33405/Ph.(561)804-9908,1 Fax(561):804=9907/e-mail,turqinc@ad1.q6m
.April:Q1,:2020
TO." Port St Lucie County,/Building Department DV
FROM: Riza N. ALTAKP.E.. 8*:P\W3--03ty
SUBJECT: Roof Tile Calculations &
ADDRESS: HOLMES Residence.1,2005 NW Laurel QW, ,0_-a1W9P,,,FFL94 , 0
CONTRACTOR: Roofing Systems of Florida, Inc. E ,COMPLIANCE
PERMIT#: 2003-0316 _r R a
STL CiE COUNTY
Bocc
Dear Sir;
The subject residence is proposed to.be roofed using Boral"Barcelona 900" cQricreteloof
-tiles. The purpose of this letteris to determine,the-method of tile i.rittallation..
The site-specific data are as follows:
Roof Two=story high, Mean Roof Height = 23 ft, Roof Slope = 5112, Hip & Gable'Roofj
Wind Velocity= 1'&4 MPH (Ultimate), Risk Category= H, Exposure D,.
As per. 2017 Florida Building Code,: (RAS) 12T., Table 2, Risk ,Category, U, Exposure
Catego,ry'V'i ASCE IA& using ASID Wind Load.Factorof 0.6;the Roof Design Pressures
for 6/12 slope are determined as follows;
Field.-Pi = -41 psf, Perimeter Rwide),P2= -72 psf Corners'(4!X4')-,P3 =,-1.06 psf
Borai "Barcelona 900" concrete.roof tiles will be installed as per#FL 28328-111'
or'NOA#19-0408.,09
Aerodynamic-_Multiplier%= 0.301 ft3 (Table 2,page 4/7)
Restoring. Moment due to Gravity Mg-,=',6.76 ft-lbf(for:5112 pitch from,Table 3, page 4/7)
Required Uplift Moment Mr = (P3Xfig) - Mg = [106xO..30l] - 6.76. 25.15ft=lbf' req'd ,
Max. Uplift Resistance Mf allowed using,two#8 screws per Barcelona tile;'is-stated as
Mf(Table4, page 5/7) = 412 ft-lbf;
Mf= 43.2 ft-lbf .5> 26.15 ft-lbf = Mr Min. Required,
Therefore, this letter certifies that installation of Boral "Barcelona, 900" Concrete, Roof
Tile's:(#FL 28328-R1 I NOA,#19-0408.02.) using two (2) QUickDri,ve screws por tile' in all,roof
zones, conforms.to requirements of 2017 Florida Building Code' RAS 127 which specifies
1,64 MPH ultimate wind velocity for Risk Category II.in"Exposure D area.
The, hip and ridgetiles will be installed, over Eastern-Metal #FL5374=114,Hip.and Ridge
Reinforcement Metal attachments using ICP AH-160 2-Component #FL6;132r'R8 foam
adhesive.
if you have any questions regarding this.matter'br,L.maybe of further
do not hesitate to call me. Sincerely,
No 385521
Riza N. ALTAN, P.E. #38521
Consulting Engineer • STATE OF I
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610NAL