HomeMy WebLinkAboutDESIGN PRESSURE CALCULATIONSENGINEERING & TESTING, INC.
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250 S.W.13's Avenue
Pompano Beach, FL 33069
DATE: 2/19/19 JOB ORDER #: 19-877
CLIENT: All Area Roofing
ADDRESS: 3921 S. US Highway 1 Fort Pierce, Florida 34982
PROJECT: Arnold Residence 5V Crimp 26 Ga. Steel Roof Panels
ADDRESS: 10725 S Ocean Drive # 236 Jensen Beach, Florida
SCANNED
BY
2017 FBC/ASCE-7 DESIGN PRESSURE CALCULATIONSSt. Lucie County
Proiect Information:
Mean Height = Max. 15' Exposure: D Basic/Ultimate Wind Speed: V it=170 mph
Length = 37' Category: 11 Nominal Wind Speed: Vasa=V it*40.6
Width = 24' Slope: 3/12 = 14' (asd = allowable strength design)
Parapet Wall: N/A Residential Kz = 1.03, Kzt = 1.0, Kd = 0.85
Design Calculations:
Velocity Pressure: q = 0.00256*KXeKdV2
Velocity Pressure (att): q--0.00256(1.03)(1.0)(0.85)(170)2] = 64.77 psf
Velocity Pressure (asd): q--0.00256(1.03)(1.0)(0.85)(170*40.6)2] = 38.86 psf
Width of Pressure Coefficient: 0.1(24')
0.4(15')
Effective Wind Area: <1W
External Pressure Coefficient:
1)
GCP1
= -0.9
2)
GCP2
= -1.7
3)
GCP3
= -2.6
Design Pressures Based on Vasa:
= 2.4'
= 6.0' ) use: TO"
Internal Pressure Coefficient:
1) GCPi = 0.18
—Field Pi =-38:86* f(=0-.9) _((Y18j] = -42.0 psf
2) Perimeter P2 = 38.86*[(-1.7) — (0.18)] = -73.1 psf
3) Corners P3 = 38.86*[(-2.6) — (0.18)] = -108.0 psf
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Page 2, 2/19/19, Job Orde...;7-877
All Area Roofing
Arnold Residence - 5V Crimp 26 Ga. Steel Roof Panels
10725 S Ocean Drive # 236; Jensen Beach, Florida:
Attachment Requirements:
Based on the requirements of Florida Product Approval # 17022.1 with maximum design
pressures of-93.5psf and -228psf; the following are our recommended fastening patterns
to attach the 24" wide 5V Crimp 26 ga. Steel Roof Panels to the minimum 15/32" thick
plywood or wood 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 (or sufficient length to meet
requirements):
Area
Field & Perimeter
Corner
Design Pressure
-93.5psf
-228psf
Assembly
Method 2
Method 4
Row Spacing
16" o.c.
611o.c.
Fastener Spacing
12" o.c.
12" o.c.
Fastener Size
# 10 X 1-1/2" Hex -Washer
Head wood screws
# 10 X 1-1/2" Hex -Washer
Head wood screws
Notes: Corners and perimeter (edge, hip, & ridge) area dimension shall not be less
than a = 3'0" (Zone 2: Perimeter (including along ridges) is a 310" wide
strip, Zone 3: Corners are 310" x 31011)
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 compliance with
specifications. \��%kil l I I I///�z�
Sincerely, �K ip aFyF`f��
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Mark A. MesiEc EOF !�
Florida Engineety:
Florida Reg. No. qL EeIGl,�`
Certificate ofAuthorilia}VA23