HomeMy WebLinkAboutLETTER ABOUT ROOFPAUL 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
RECEIVED
iber 12, 2018
SEP 2 5 2018
Walters Re -Roof
512 Nettles Blvd ST. Lucie County, Permitting
Jensen Beach, FL aCANNE®
E OF WORK: Lucie cau"Ry
new Metal Roof (Extreme Metal Fabricators, LLC "5-V Crimp" (FL #17022.1)-at above
iced address over new underlayment, and existing plywood sheathing.
2017
E7-10
= 3'
G HIEGHT = 10'-0"
ROOF HIEGHT = <20'
ANGLE = 4:12
? = PITCHED HIP
;TMENT FACTOR = 1.00
)TANCE FACTOR = 1.00
VELOCITY V ult = 165WH
VELOCITY V asd =128 MPH
;URE=D
E CLASS = ENCLOSED BUILDING
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 Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
September 20, 2018
12 Nettles Blvd Jensen Beach, FL
1 of 3
METAL ROOFING ATTACHMENT REQUIREMENTS:
Metal roofing to be attached with corrosion resistant Hex -Head wood screws #10 z 1 %a"
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:-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" 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 2017.
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
Septeinber 20, 2018
12 Nettles Blvd Jensen Beach, FL 2 of 3
4
L
w
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.
Pahl Welch P.E. Reg. No. 29945
September 20, 2018
512 Nettles Blvd Jensen Beach, FL 3 of 3