HomeMy WebLinkAboutEngineeringPAUL 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
December 12, 2016
Re: Eubanks Re -Roof
10851 S Ocean Dr. #85
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 = <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
ZONE 2 (Perimeter/ Ridge) = -68.0
ZONE 3 (Comers) = -99.8
10851 Ocean Dr. #85 Jensen Beach, FL
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
December 12, 2016
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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 (Comers): 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 or UDL 25 plus NOA# 13-
0730.01.
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# 13-0730.01.),
manufacturer's specifications, and the Florida Building Code 2014.
10851 Ocean Dr. #85 Jensen Beach, FL
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
December 12, 2016
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Axt
ROOF ZONE PLAN
A=3'
0,0,0= ZONE DESIGNATION (TYPICAL)
NOTE: PROVIDE LAP SEALANT FOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT. :12 HORZ.
10851 Ocean Dr. #85 Jensen Beach, FL
a
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
December 12, 2016
3 of