HomeMy WebLinkAboutLETTER-SCOPE OF WORKSCANNED)
BY
PAUL WELCH INC.
Mechanical /Electrical Civil Engineering
1984 S. . Biltmore St. Suite# 114
Poreaint Lucie, FL 34984
one (772) 785 - 9888
E-, ail pwelchinc@aol.com
March ' 8, 2018
Re: Brandenburg Re -Roof
1287 Nettles Blvd.
Jensen Beach, FL 349
SCOPE OF WORK:
Install new Metal Roof
referenced address over
eme Metal Fabricators, LLC "5-V Crimp" FL # 17022.1) at above
underlayment, and existing plywood sheathing.
DESIGN CRITERIA:
FBC 2017
ASCE7-10
PROJECT DATA:
BUILDWG-HIEGHT — 10'-0"
A= 3'
MEAN ROOF HIEGHT = <20'
ROOF ANGLE = 54
12
SHAPE = PITCHED GABLE
ADJUSTMENT F�CTOR =1:00
IMPROTANCE FACTOR =1.00
WIND VELOCITY V ult = 165UTH
WIND VELOCITY V asd =128 MPH
EXPOSURE ='D
ENCLOSURE)CLASS = ENCLOSED BUILDING
INTERNAL PRESSURE COEFFICIENT = -0.18
ZONE 1 (Field) _ 40.3
ZONE 2 (Perimeter/ Ridge) _ -68.0
ZONE 3 (gorners) = -99.8
1287 Nettks Blvd. Jensen Beach, FL
Paul Welch Inc.
Paul"Welch P.E. Reg. No. 29945
March 8, 2018
-!l lof3
Metal roofing to be attached with corrosi!�. 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 = 1.6" 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 HORIZ.
Design uplift Pressure for attachment as per above:
Product Design Pressure: Zones 1 & i-93.5PSF / Zone 3:-101PSF
Therefore O.K.
DERLAYMENT:
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
specifications, and the Florida
1287 Nettles Blvd. Jensen
product approval (FL # 17022.1), manufacturer's
.ding Code 2017..
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
March 8, 2018
i 2 of 3
- GAIVUE
1�1
HUI Ok'ZONE PLAN
-4� =3'
(5) I ZONE DESIGNATION (TYPICAL)
NOTE: PROVIDE LAP SEALANTFOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT. :12 HORZ.
Paul Welch Inc.
Paul Welch P.E. Rep No. 29945
March 8, f ,#18
1287 Nettles Blvd. Jensen Beach, FL 3 of 3