HomeMy WebLinkAboutDESIGN PRESSURE CALCULATIONSSGANNEU
By ENGINEERING & TESTING INC.
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RECEIVED Phone: (866) 781.-6889•Fas: (866) 784-8550
www.florid.aengineering,indtesting.com
250 S.W. 131h Avenue
APR 2 0 2018 Pompano Beach, FL 33069
DATE: 4/17/18 sT. Lucie
CLIENT:
ADDRESS: 3921 S.
PROJECT:
ADDRESS:
Residence
7e Drive Fort Pi
#: 18-1506
FL 34982
I
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONS
Proiect Information:
Mean Roof Height = 20' Exposure: D Basic/Ultimate Wind Speed: Vi1t=170 mph
Length = 25' Categol y: II Nominal Wind Speed: Vasd=V„lt*40.6
Width = 25' Slope. ! 6/12 (asd = allowable strength design)
Parapet Wall: N/A Residential KZ = 1.08, Kzt = 1.0, Kd = 0.85
Note: The most conservative dimensions were utilized.f or the design calculations below.
Design Calculations:
Velocity Pressure: q = 0.00256*K,LKdV2
Velocity Pressure („ lt): q=0.00256Q.08)(1.0)(0.85)(170)2] = 67.92 psf
Velocity Pressure (asd): q=0.00256(i .08)(1.0)(0.85)(170*�0.6)2] = 40.75 psf
Width of Pressure Coefficient: 0.h(25') = 2.5'
0.4(20') = 8.0' } use: 3'0"
Effective Wind Area: <10f 2
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
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` Page 2, 4/17/18, Job Order
All Area Roofing FLO A
Kline Residence - Sloped Tile Roof Deck!
2508 Harbour Cove Drive; Fort Pierce, FL:
i N )
Design Pressures Based on Vasd:
1) Field
Pt = 40.75 * [(-0.9)
— (0.18)]
= -44.0 psf
2) Perimeter
P2 = 40.75*[(-1.7)
— (0.18)]
= -76.6 psf
3) Corners
P3
= 40.75*[(-2.6)
— (0.18)]
= -113.3 psf
Per
Tile System: Moment Based
Aerodynamic Multiplier: 0.205 ft3
Restoring moment due to gravity:
Deck Application - Table 2
= 6.54 ft-lbf (Table 23
Attachment resistance expressed as a moment: Mf = 40.4 ft-lbf 3M 2-Component Foam
Roof Tile Adhesive AH-160 Set (Table 6, Single Medium Paddy 24g)
1) Field : Mr, = ( 44.0*0.205) — 6.54 ft. lb = 2.5 ft. lb. < 40.4 ft. lb = PASS
2) Perimeter: Mr2 = ( 76.6*0.205) — 6.54 ft. lb = 9.2 ft. lb. < 40.4 ft. lb = PASS
3) Corners : Mr3 = (113.3*0.205) — 6.54 ft. lb = 16.7 ft. lb. < 40.4 ft. lb = PASS
System is acceptable as approved with single medium paddy (24g) placement of the 3M
2-Component Foam Roof Tile Adhesive AH-160 based on the requirements of NOA #
16-0112.07.
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.
I
All work shall be inspected by our field engineer (or authorized
representative) or a building department inspector to verify com iance
with specifications.AN
Sincerely,
Mark A. Mesiano? STATE of
Florida Engineerin'�� " • ` .
Florida Reg. No. 48Y(22
Certificate of AuthorizaNR'�\��