HomeMy WebLinkAboutDESIGN PRESSURE CALCULATIONSDATE:
4/18/18
CLIENT:
Tradewinds
ADDRESS:
PO Box 132(
PROJECT:
Starshine Pr
ADDRESS:
373 NE Bra(
SCANNED
RECEIVED
APR 2 0 018
ST. WOP cownty, Permitting
ofing, Inc.
Fort I
erties Flat
n Road I Port c
2017 FBC/ASCE-7 DESIGN
Project Information:
Height = 12' Exposure: C
Length = 17' Category: H
Width = 11' Slope: < 7°
Parapet Wall: N/A Residential
Design Calculations:
Velocity Pressure: q = 0.00256*KZKZt]
Velocity Pressure („ lt): q=0.00256(0.8'
Velocity Pressure (.d): q=0.00256(0.8
ENGINEERING & TESTING, INC.
Phone: (866) 781-6889 •Fai.: (866) 784-8550
www.tlo ridaengineeringandtesting.com
250 S.W.13"' Avenue
Pompano Beach, FL 33069
#: 18-1629
Deck
SSURE CALCULATIONS
Basic/Ultimate Wind Speed: V„It=170 mph
Nominal Wind Speed: V.d=Vwt*q0.6
(asd = allowable strength design)
KZ = 0.85, Kzt =1.0, Kd = 0.85
1.0)(0.85)(170)2 = 53.45 psf
;1.0)(0.85)(170*40.6)2 = 32.07 psf
Width of Pressure Coefficient: 0.1(1 F) = 1.1'
0.4(�12') = 4.8' } use: 3'0'
Effective Wind Area: <10ft2
For parapet height three feet (T) or arger, zone three (3) shall be treated as zone two (2).
External Pressure Coefficient: Internal Pressure Coefficient:
1) GCP1 = -1.0 1) GCP; = 0.18
2) GCP2 = -1.8
3) GCP3 = -2.8
Loge 'DNA
v�Q v
�\'��� .flsmcrdnee
Page 2, 4/18/18, Job Order #1'. �.,'` i29
Tradewinds Roofing, Inc.
Starshine Properties
Flat Wood Non -Insulated Deck
373 NE Bracken Road; Port Saint Lucie, FL:
Design Pressures Based on Vasd:
1) Field
P1 = 32.07*1(-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:
FLO A
Based on the requirements of Florida Product Spproval # FL1046-R8, Appendix 1, Page
6 of 22, System No. W-11, with a maximum Design pressure of-52.5psf; the following
are our recommended fastening patterns to attach the proposed two plies of PermaPly 28
or Ventsulation base sheet to the minimum 19/32" plywood deck utilizing approved 11
ga. annular ring shank nails and 32ga., 1-5/8" diameter tin caps:
Field: 9" o.c. @ 4" laps and 2
Perimeter: 9" o.c. @ 4" laps and 3
Corners: 9" o.c. @ 4" laps and 4
Notes: Corners and perimeter area
rows 12" o.c.
rows 9" o.c.
rows 9" o.c.
shall not be less than a = 3'0"
Contractor to verify that the fastening patterns meet manufacturer's
requirements for issuance of a arranty (as applicable).
All work shall be in compli ce 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 11 responsible for verifying existing/proposed
conditions/decks as it pertains to the above provided product approval.
All work shall be
representative) or a
with specifications.
ielIed by our field engineer (or authorized
ing department inspector to verify compliance
\;
\%%11111 I/11i,Z
N K A
Sincerely,,y c�cFy r`
Cq
�WC
° 0
o
Mark A. Mesian'`. p� e
Florida Engineerin,sIt
g, Ino.� e�
Florida Reg. No. 48Y(d2s,QONGMe"a� 0%%
Certificate of Authorization RU. 6923