HomeMy WebLinkAboutengineering 2DATE:
4/23/20
CLIENT:
Onshore Roi
ADDRESS:
4401 S.E. Cc
PROJECT:
Condos of G
ADDRESS:
9851-9873 P
i
1
ENGINE
lie: (866)
ul»r.flo
I
I
JOB ORDER #:
2017 FBC/ASCE-7 DESIGN PRESSURE
Proiect Information:
Mean Roof Height = 25' Exposure: C Basic/Ultimate Wind f
Length= 230' Category: II Nominal Wind Speed:
Width = 55' Slope: 5/12 (asd = allowable strenl
Parapet Wall: N/A Multi -Unit Res. K: = 0.95, `zt = 1.0,1
REV
Design Calculations: CODE
Velocity Pressure: q = 0.00256*KzK,tKdV2 I
Velocity Pressure (it): q=0.00256(0.95)(1.0)(0.85)(170)2] = 59.7PpTf
Velocity Pressure (.sd): q=0.00256(0.95)(1.0)(0.85)(170*40.6)2],= 35.85 p<
Width of Pressure Coefficient: 0.1(55') = 5.5'
0.4(25') = 10.0') use: 5'6"
Effective Wind Area: <1W 1
For hip roofs with a roof slope of 25 degrees or less, zone three i(3) shall
zone two (2).
External Pressure Coefficient:
-TESTING, INC.
•Fax: (866) 784-8550
eed: V"ic=170 mph
asd=V it*40.6
i design)
= 0.85
EWER FOR
: MPLIANCE
CIE COUNTY
BOCC �i271Zd
1) GCPI = -0.9 1) GCP; = 0.18
2) GCP2 = -1.7
3) GCP3 = -2.6
Design Pressures Based on Vasd:
1) Field P1 = 35.85*[(-0.9)—(0.18)]=-38.7psf
2) Perimeter P2 = 35.85*[(-1.7) — (0.18)] _ -67.4 psf
3) Corners P3 = 35.85*[(-2.6) — (0.18)] _ -99.6 psf,"
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Page 2, 4R320, Job Order #20-1628Rev.
Onshore Roofing
Condos of Golf Villas Bldg. P
9851-9873 Perfect Drive; Port Saint Lucie, FL:
Attachment Requirements Per RAS 127:
i
The system is acceptable
Approval # FL7473-R8 for
shank nails per tile. Sectio
as
n
approved based on the requirements of I
mechanically attaching the Eagle!Roof Tile
6.3.1 of the product approval references TE
and Table 3 of the FRSA/TRI April 2012 for the required uplift in,
windload resistance respectively.
Per Table 2A of the FRSA/TRI April 2012:
Required Aerodynamic Uplift Moment (Ma) = 35.9ft-Ibf; for Zone 3, Ex]
wind speed of 170mph, mean roof height of 25', and roof pitch of 6/12 or
Per Table 3 of the FRSA/TRI April 2012:
Mechanical Roof Tile Resistance Value = 41.2ft-Ibf; for two (2) ring
installed into 19/32" thick plywood deck with the direct deck method
a Product
i two ring
2A or 2B
t and the
C, basic
nails per tile
Required Aerodynamic Uplift Moment < Mechanical Roof Tile Resistanc e Value:
35.9ft-lbf < 41.2ft-Ibf;
therefore, the system is acceptable as approved for ALL roof zones with two (2) ring shank
nails applied direct to deck into a 19/32" thick wood deck based on the requirements of Florida
Product Approval # FL7473-R8 and FRSA/TRI. i
Notes:
• Corners and perimeter area dimension shall not be less than a = 5'6"
• Contractor to verify that the fastening patterns meet manufacturer's
issuance of a warranty (as applicable).
• All work shall be in compliance with the local building code product
acceptance and manufacturer specifications and Florida Building Col
• Wind load calculations based on ASCE-7, 2017 FBC, and informa
client. Client is responsible for verifying existing/proposed cone
pertains to the above provided product approval.
• All work shall be inspected by our field engineer (or authorized rel
building department inspector to verify compliance with specificatiol
REVIEWED FOR sincerely,;
CODE COMPLIANCE Mark Alan
ST. LUCIE CQUIMTY Mesiano
Mark A. Mesiano, P
Florida Engineering
Florida Reg. No. 48'
Certificate of Author
juirements for
itrol notice of
!017 Edition.
i provided by
t1s/decks as it
tentative) or a
Jly signed by Mark
desiano
2020.04.2315:07:47
Testing, Inc.
ition No. 6923