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PAUL WELCH INC.
Mechanical Electrical Civil Engineering i
1984 S.W.Biltmore St. Suite#114
Port Saint Lucie, FL 34984 �.
Phone(772) 785 - 9888
E-mail pwelchinc@aol.com
February 22,2017
Re: Residential Re-Roof
660 Nettles Blvd.
Jensen Beach, FL 34957
SCOPE OF WORK:
Install new Metal Roof(Extreme Metal Fabricators,LLC "5-V Crimp",FL#1'7022.1)at above
referenced address over new underlayment, and existing plywood sheathing.
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DESIGN.CRITERIA:
FBC 2014
ASCE?-10
PROJECT DATA:
BUILDING HIEGHT= 10'-0"
A=3'
MEAN ROOF HIEGHT=<20'
ROOF ANGLE=4:12
SHAPE=PITCHED GABLE
ADJUSTMENT FACTOR= 1.00 ;!
RVIPROTANCE 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
ZONE 2 (Perimeter/Ridge) _-68.0
ZONE 3 (Corners)_-99.8 Paul Welch Inc.
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Paul Welch P.E. Reg.No.1 29945
February 22,2017
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660 Nettles Blvd.Jensen Beach,FL 1 of 3
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METAL.ROOFING ATTACHMENT REQUIREMENTS:
Metal roofing to be attached with corrosion resistant Hex-Head wood screws#10 x 11/Z"
minimum with weather sealing washers (minimum 3/16"penetration through deck). Fasteners
shallbeplaced through the panel ribs at 12"on center across panel width and spacing along the
ribs as follows:
ZONE 1 (Field): FASTENER SPACING= 16"O.C.
ZONE 2 (Perimeter/Ridge): FASTENER SPACING= 16" O.C:
ZONE 3 (Corners):FASTENER SPACING= 8" O.C.
NOTE: PROVIDE LAP SEALANT FOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT. :12 HORZ.
Design uplift Pressure 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"OC.
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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`-Paul Welch Inc.
Paul Welch P.E. Reg.No.29945
February 22,2017
660 Nettles Blvd.Jensen Beach,FL 2 of 3
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ROOF ZONE PLAN
A=3'
ZONE DESIGNATION(TYPICAL)
NOTE: PROVIDE LAP SEALANT FOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT. :12 HORZ.
Paul Welch Inc.
Paul Welch P:E. Reg.No.29945
- February 22,2017
660 Nettles Blvd.Jensen Beach,FL - 3 60