HomeMy WebLinkAboutEngineering PAUL WELCH INC.
Mechanical Electrical Civil Engineering
1984 S.W. Biltmore St. Suite#114
Port Saint Lucie, FL 34984
Phone (772) 785 - 9888
E-mail pwelchinc@aol.com
March 16,2017
Re: Padovano Re-Roof
10851 S Ocean Dr. 17
Jensen Beach, FL 34957
SCOPE OF WORK:
Install new Metal Roof(Extreme Metal Fabricators, LLC "5-V Crimp"FL #17022.1) at above .
referenced address over new underlayment, and existing plywood sheathing.
DESIGN CRITERIA:
FBC 2014
ASCE7-10
PROJECT DATA:
BUILDING HIEGHT= 10'-0"
A=3'
MEAN ROOF HIEGHT=<20'
ROOF ANGLE=4:12
SHAPE=PITCHED GABLE
ADJUSTMENT FACTOR= 1.00
IMPROTANCE FACTOR= 1.00
WIND VELOCITY V ult= 165MPH
WIND VELOCITY_V asd= 128 MPH
EXPOSURE=D
ENCLOSURE CLASS =ENCLOSED BUILDING
INTERNAL PRESSURE COEFFICIENT=-0.18
APPLIED UPLIFT DESIGN PRESSURES PER ASCE(PSF):
ZONE 1 (Field) =-40.3
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ZONE 2 (Perimeter/Ridge) _-68.0
ZONE 3 Corners =-99.8 c x'`F* t'Paul Welch Inc.
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� Pag Welch P T. Reg.No. 29945
16, 2017
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METAL ROOFING ATTACHMENT REQUIREMENTS:
Metal roofing to be attached with corrosion resistant Hex-Head wood screws#10 z 1
minimum with weather sealing washers(minimum 3/16"penetration through deck). Fasteners
shall be placed through the panel ribs at 12"on center across panel width and spacing along the
ribs as follows:
ZONE :l (Field):FASTENER SPACING= W O.C.
ZONE 2(Perimeter/Ridge):FASTENER SPACING= 16"O.C.
ZONE 3 (Comers):FASTENER SPACING=8" O.C.
NOTE:PROVIDE LAP SEALANT FOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT. :12 HORZ.
Design up1lrt'Pfessure for attachment as per above:
Product Design Pressure: Zones 1 &2: -93.5PSF/Zone 3: -101PSF
Therefore O.K.
UNDERLAYMENT:
Underlayment shall be in accordance with manufacturer's guidelines,FBC 1507.4.5.1,and FBC
15074.5.2.Underlayment shall be Approved 30#Roofing Felt.
DECK INSTALLATION:
Re-nail all plywood sheathing(15/32"thick minimum)with 8D ring-shank nails at 4"O.C.
perimeter and 6"O.C. field for all zones.
All work to be in compliance with product approval (FL# 17022.1),manufacturer's
specifications, and the Florida Building Code 2014.
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NOTE: PROVIDE LAP SEALANT FOR ALL ROOFttPA i �LAP&TOR:ROOF
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