HomeMy WebLinkAboutEngineering FLO A R€- 0 IF—L11EED` ENGINEERING & TESTING, INC.
APR 13 2096 Phone: (866) 781-6889*Fax: (866) 784-8550
W197w.floridaengineeringandtesting.com
PERMITTING 250 S.W.13"'Avenue
' St. Lucie County, FL Pompano Beach,FL 33069
DATE: 3/30/16 JOB ORDER#: 16-1054
CLIENT: Freedom Roofers, LLC
ADDRESS: 5575 US 1 - Suite# 1 & 2 Vero Beach,FL 32967
PROJECT: Toth Residence Flat Non-Insulated Wood Roof Deck
ADDRESS: 361 NE Bracken Road Port Saint Lucie,Florida
FBC 2014/ASCE 7-10 DESIGN PRESSURE CALCULATIONS
Project Information:
Height= 8' Exposure: C Basic/Ultimate Wind Speed: V,,It=170 mph
Length= 17' Category: II Nominal Wind Speed: Vad=V,,It*40.6
Width= 15' Slope: <7° (asd=allowable strength design)
Parapet Wall: <3' Residential KZ=0.85,Kzt= 1.0, Kd=0.85
Design Calculations:
Velocity Pressure: q= 0.00256*KZK�tKdV2
Velocity Pressure (,I): q--0.00256(0.85)(1.0)(0.85)(170)2] = 53.45 psf
Velocity Pressure (.d): q=0.00256(0.85)(1.0)(0.85)(170* 0.6)2] =32.07 psf
Width of Pressure Coefficient: 0.1(15') = 1.5'
0.4(8) = 3.2' ) use: 3'0"
Effective Wind Area: <1 Of 2
For parapet height three feet(3') or larger, zone three (3) shall be treated as zone two (2).
External Pressure Coefficient: Internal Pressure Coefficient:
1) GCP1 = -1.0 1) GCPi = 0.18
2) GCP2 = -1.8
3) GCP3 = -2.8
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Page 2,3/30/16,Job Order#16-1054 2"
Freedom Roofers,LLC-Toth Residence FILO A
Flat Non-Insulated Wood Roof Deck
361 NE Bracken Road;Port Saint Lucie,FL:
Design Pressures Based on Vasd:
1) Field P1 = 32.07*[(-1.0)—(0.18)] = -37.8 psf
2) Perimeter P2 = 32.07*[(-1.8)—(0.18)] = -63.5 psf
3) Corners P3 = 32.07*[(-2.8)—(0.18)] = -95.6 psf
Attachment Requirements Per RAS-117:
Based on the requirements of Florida Product Approval FL#9487.1, Appendix 1, System
W-12, pg 3 of 3, with a maximum design pressure of -135.0psf, the following are our
- -- - --recommended-fastening-patterns-to attach the_proposed_-EasyNailBase_base_sheet to_-the_
min 15/32" plywood at max. 24" spans deck utilizing approved OMG # 12 or # 14HD
fasteners with OMG 3 in. Galvalume Steel Plate or Tru-Fast DP or HD with MP-3Plates:
Field: 6" o.c. @ 4" laps and 4 staggered rows 6" o.c.
Perimeter: 6" o.c. @ 4" laps and 4 staggered rows 6" o.c.
Corners: 6" o.c. @ 4" laps and 4 staggered rows 6" o.c.
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 2014 Edition.
Wind load calculations based on ASCE 7-10, FBC 2014 and information
provided by client. Client is responsible for verifying existing conditions
as it pertains to the above provided product approval.
All work shall be inspected by our field engineer (or authorized
representative) or a building department inspector to verify compliance
with specifications.
Sincerely,;,
Mark';A.-Me9 an-;.P-.E"
F1orida,Erigine'0 g'&. 'estjng; Inc.
Cbi f,f ca t&of Au&ki- i:or No. 6923