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PAUL WELCH INC.
Mechanical Electrical Civil Engineering
1984 S.W. Biltmore St. Suite9114
Port Saint Lucie, FL 34984
Phone(772)785 - 9888
E-mail pwelchinc@aol.com
October 16, 2015 FILE Copy
Re: Residential Re-Roof
1087 Nettles Blvd
Jensen Beach,FL
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
ASCE?-10
PROJECT DATA:
BUILDING HIEGHT= 8'-0"
A=3'
MEAN ROOF HIEGHT=<20'
ROOF ANGLE=4:12
SHAPE=PITCHED GABLE
ADJUSTMENT FACTOR= 1.00
E\d PROTANCE 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
(Comers) -Paul Welch Inc.
_ Pau1�WelclirP.E.'Reg. No. 29945
--October 1'6, 2015
1087 Nettles Blvd Jensen Beach,FL _ _ -_- 1 of 3
METAL ROOFING ATTACHMENT RE S:
Metal roofing to he attached with corrosion resistant Hex-Head wood screws#10 x I Y2"
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 1 (Field):FASTENER SPACING= 16"O.C.
ZONE 2(Perimeter/Ridge):FASTENER SPACING= 16"O.C.
ZONE 3 (Comers): FASTENER SPACING=8"O.C.
Design uplift Pressure for attachment as per above:
Product Design Pressure:Zones 1 &2 : -93.5PSF/Zone 3: -101PSF
Therefore O.K.
UNDEIRLAYMENT:
Underlayment shall be in accordance with manufacturer's guidelines,FBC 1507.4.5.1,and FBC
15074.5.2.
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.
Paul Welch Inc.
Paul Welch P.E. Reg.No. 29945
October 16, 2015
1487 Nettles Blvd Jessen Beach,FL 2 of 3
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ROOF ZONE PLAN
A=3'
ZONE.DESIGNATION(TYPICAL)
Paul Welch Inc.
Paul Welch P.E.Reg.No. 29945
October ib, 2015
1087 Nettles Blvd Jensen Beach,FL 3 of 3