HomeMy WebLinkAboutDESIGN PRESSURE CALCULATIONSc
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ENGINEERING &. TESTING, INC.
RECEIVED
Phone: (866) 781-6889 *Fax: (866) 78=L-8550
www.noridaengineeringandtesting.com
AUG 2 7 2018 250 S.W. ISh Avenue
Pompano Beach, FL'33069
I ST. Lucie County, Permitting)
DATE: 8/15/18 JOB ORDER #: 18-3551
CLIENT: All Area Roofing CANNED
ADDRESS: 3921 S. US Highway 1 Fort Pierce, Florida 34982 �b,_ p _ By
PROJECT: Dixon Residence 5V Crimp 26ga. Steel Roof Panels
ADDRESS: 3301 Avenue O Fort Pierce, Florida
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONS
Project Information:
Mean Height =15' Max. Exposure: C Basic/Ultimate Wind Speed: V,,it=170 mph
Length = 52' Category: II Nominal Wind Speed: Va,d=V„it*q0.6
Width = 34' Slope: 3/12 = 14' (asd = allowable strength design)
Parapet Wall: N/A Residential KZ = 0.85, Kzt = 1.0, Kd = 0.85
Design Calculations:
Velocity Pressure: q = 0.00256*KX7tKdV2
Velocity Pressure („it): q=0.00256(0.85)(1.0)(0.85)(170)2] = 53.45 psf
Velocity Pressure (aid): q=0.00256(0.85)(1.0)(0.85)(170*40.6)2] = 32.07 psf
Width of Pressure Coefficient: 0.1(34') = 3.4' "Y
0.4(10') = 4.0' ) use: FILE COP
Effective Wind Area: <1 W
External Pressure Coefficient:
1)
GCP1
= -0.9
2)
GCP2
= -1.7
3)
GCP3
= -2.6
Design Pressures Based on Vasd:
Internal Pressure Coefficient:
1) GCPi = 0.18
1) Field
P 1 = 32.07* [(-0.9) —
(0.18)]
_ -34.6 psf
2) Perimeter
P2 = 32.07* [(-1.7) —
(0.18)]
_. -60.3 psf
3) Corners
P3 = 32.07*[(-2.6) —
(0.18)]
_ -89.2 psf
Quality Q�3AyV Aswerance
i
Page 2, 8/15/18, Job Order #11_ �. 351
All Area Roofing FLO A
Dixon Residence
5V Crimp 26ga. Steel Roof Panels
3301 Avenue O; Fort Pierce, Florida:
Attachment Requirements:
Based on the requirements of Florida Product Approval # 17022.1 with maximum design
pressures of-93.5psf (Method 2); the following are our recommended fastening patterns
to attach the 5V Crimp 26 ga. Steel Roof Panels to the min. 15/32" plywood or wood
plank deck with # 10 x 1-1/2" Hex -Washer Head wood screws to penetrate 3/16" min.
thru deck or 5/8" embedment into wood plank:
Area
Field, Perimeter & Corner (Method 2)
Design Pressure
-93.5psf
Fastener Row Spacing (Max.)
16" O.C.
Fastener Spacing (Along Panel Width)
12" o.c.
Fastener
# 10 x 1-1/2" Hex -Washer Head wood
screw to penetrate 3/16" min. thru deck
or 5/8" embedment into wood plank
Notes: Corners and perimeter (edge, hip, & ridge) area dimension shall not be less
than a = 3'6" (Zone 2: Perimeter (including along ridges) is a 316" wide
strip, Zone 3: Corners are 3'6" x 3'6")
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 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 compl` illyAh®/,�
specifications. ��� p►RK Z
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Sincerely, fib; ,L ���F•,
.� O % °
• Is "' N04
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Mark A. Mesiano, Pd �0 •�O,Q 0.o O
Florida Engineering 1 4nc. -IK
Florida Reg. No. 48202A, FNGINE'��
Certificate of Authorization dI fflO \`