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PAUL WELCH INC. FILE
Mechanical Electrical Civil Engineering `
1984 S.W. Biltmore St. Suite#114 I �� ��✓�
Port Saint Lucie,FL 34984
Phone(772) 785 -9888
Email pwelchinc@aol.com
July 14,2015
Re: Zavala-Corona Re-Roof
401 N 37th Street
Fort Pierce, FL 34947
SCOPE OF WORK:
Remove existing roofing and install new 5-V Crimp Metal Roof(Union Corrugating Company
FL# 7271.5) at above referenced residence 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=<15'
ROOF ANGLE=4:12
SHAPE=PITCHED GABLE
RvIPROTANCE FACTOR= 1.00
WIND VELOCITY V ult= 160 MPH
WIND VELOCITY V asd= 124 MPH
EXPOSURE=C
ENCLOSURE CLASS =ENCLOSED BUILDING
INTERNAL PRESSURE COEFFICIENT=-0.18
APPLIED UPLIFT DESIGN PRESSURES ON SLOPED ROOF (Psf):
ZONE 1 (Field)=-38.7
ZONE 2 (Perimeter/Ridge)_-64.9
ZONE 3 (Corners)_-97.7
"Paul Welch Inc.
' Paul Welch-P.E. Reg. No. 29945
July 14, 2015
401 N 37th Street Fort Pierce,FL 34947 1 of 3
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ATTACHMENT REOUM— MENTS:
Metal roofing to be attached with#9- 15 x 2"long(minimum 114"penetration through plywood
sheathing)wood screws with weather sealing washers spacing as follows:
ZONE 1 (Field):
Fasteners in ribs(Pattern 2 per product approval)at 12" O.C.
ZONE 2(Perimeter/Ridge):
Fasteners in ribs(Pattern 2 per product approval)at 12" O.C.
ZONE 3(Corners):
Fasteners in ribs(Pattern 2 per product approval)at 12" O.C.
Also Provide Fasteners at 6" O.C. in the flat of the panel and ribs at panel ends all
perimeter of the roof eve.
Zones 1,2 &3 Design uplift Pressure: -113.1 psf
Zones 1,2&3: 113.1 >97.7>64.9>38.7 Therefore Q.K.
UNDERLAYMENT INSTALLATION:
Underlayment shall be Unless otherwise noted, required underlayment shall conform to ASTM
D 226,Type I or Type II, or ASTM D 4869 Type I or Type II or ASTM D 6757. nderlayment
shall be one layer applied in the following manner. Underlayment shall be applied shingle
fashion,parallel to and starting from the eave and lapped 2 inches(51 mm), fastened sufficiently
to hold in place. Distortions in the underlayment shall not interfere Metal Roof Panel
installation.
DECD INSTALLATION:
Re-nail all plywood sheathing(19/32"thick minimum)with 8D ring-shank nails at 4"Q.C.
perimeter and 6"Q.C. field for all zones.
All work to be in compliance with product approval (FL#7271.5),manufacturer's
specifications,and the Florida Building Code 2014.
Submitted by:
PAUL WELCH IN .
Paul Welch,P.E.
Reg.No 29945
PW:pj
401 N 37th Street Fort Pierce,FL 34947 2 of 3
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ROOF ZONE PLAN
A=3'
(D,0, ZONE DF'FSIIGNA770N(TYPICAL)
Note:All Zones Require Some Attachments
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Paul Wel&P-R-Reg.Na 29945
July
-2015
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401 N 37th Street Fort'Pierce,FL 34947