HomeMy WebLinkAboutLETTER-SCOPE OF WORKX l�N EU
PAUL WELCH INC.
Mechanical ,Electrical , Civil Engineering
1984 S.W. Bilimore St. Suite#114
Port Saint Lucie, FL 34984
Phone (772) 785 - 9888
E-mail nwe'lchinc(@aol.com
March 23, 2018
Re: Bolhouse Re -Roof
2115 Nettles Blvd.
Jensen Beach, FL 34957
RECEIVED
MAR 3 0 2018
ST. Lucie County, Permltting
I
SCOPE OF WORK:
Install new Metal Roof (Extreme Metal Fabricators, LLC "5-V Crimp" FL'#17022.2) at above
referenced address over new underlayment, and existing plywood sheathing. -
DESIGN CRITERIA:
FBC 2017
ASCE7-10 .
PROJECT DATA:
BUILDING HIEGHT = 10'-0"
A= 3'
MEAN ROOF HIEGHT = <20'
ROOF ANGLE = 3:12
SHAPE = PITCHED GABLE
ADJUSTMENT FACTOR = 1.00
EM PROTANCE 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
FILE COPY
APPLIED UPLIFT DESIGN PRESSURES PER ASCE (PSF):
ZONE 1 (Field) = -40.3
ZONE 2 (Perimeter/ Ridge) = -68.0
ZONE 3 (Corners) = -99.8 Paul Welch Inc.
2115 Nettles Blvd. Jensen Beach, FL
Paul Welch P.E. Reg. No. 29945
March 23, 2018
/ 1 of 3
Metal roofing to be attached with corrosion resi
minimum with weather sealing washers (minim
shall be placed through the panel ribs at 10.5 iI
ribs as follows:
ZONE r(Field): FASTENER SPACING = I
ZONE 2 (Perimeter/ Ridge): FASTENER SPI
ZONE 3 (Corners): FASTENER SPACING =
NOTE: PROVIDE LAP SEALANT FOR
SLOPES UNDER 3 VERT.:12 HORZ.
Design uplift Pressure for attachment as per;
Product Design Pressure: Zones 1 & 2: -168.
Therefore O.K.
UNDERLAYMENT•
Underlayment shall be in accordance with maj
15074.5.2. Uiiderlayment shall be Approved 3
ant Hex -Head wood screws #9 z 1 %"
n 3/16" penetration through deck). Fasteners
center across panel width and spacing along the
-O.C.
,ING = 10" O.C.
0" O.C.
ROOF PANEL LAPS FOR -ROOF
/ Zone 3:-168.5PSF
acturer's guidelines, FBC 1507.4.5.1, and FBC
Roofing Felt.
DECK INSTALLATION: I!
Re -nail all plywood sheathing (15/32" thick minunum) with 81) ring -shank nails at 4" O.C.
perimeter and 6" O.C. field for all zones.
I `
All work to be in compliance with product approval (FL # 17022.2), manufacturer's
specifications, and the Florida Building Code 201i,7.
2115 Nettles Blvd Jensen Beach, FL
Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
March 23, 2018
/ 2 of 3
t A
A
G�11�it�G c�t�r�G,
ROOF ZONE PLAN
A=3'
Q 0, g = ZONE DESIGNAIYON (TYPICAL)
NOTE: PROVIDE LAP SEALANT FOR ALL ROOF PANEL LAPS FOR ROOF
SLOPES UNDER 3 VERT.:12 HORZ.
2115 Nettles Blvd. Jensen Beach, FL
JK
Paul Welch- Inc.
Paul Welch P.E. Reg. No. 29945
March 23, 2018
3 of3