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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 6,2017
Re: Ward Re-Roof
939 Nettles Blvd.
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
ASCE?-10
PROJECT DATA:
BUILDING HIEGHT= 10'-0"
A=3'
MEAN ROOF HIEGHT=<15'
ROOF ANGLE=3:12
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'l (Field)=-40.3
ZONE2 (Perimeter/Ridge)_ -68.0
ZONE 3 (Corners) _-99.8 Paul Welch Inc.
Pa:u-Welch.P.E. Reg.No. 2994.5
=March 6,2017
939 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 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 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: -10IPSF
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 Tri-Built underlayment NOA# 15-1123.06.
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), (NOA# 15-1123.06.),
manufacturer's specifications, and the Florida Building Code 2014.
Paul Welch Inc.
Paul Welch P.E. Reg.No.29945
March 6,2017
939 Nettles Blvd Jensen Beach,FL 2 of 3
Z 3 6AP,lti..2
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s4 _
1
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601.1
ROOF ZONE PLAN
A=3'
(1)=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
March 6,2017
939 Nettles Blvd Jensen Beach,FL 3 of,3