HomeMy WebLinkAboutEngineering PAUL WELCH INC.
Mechanical Electrical Civil Engineering
1984 S.W. Biltmore St. Suite#114
Port Saint Lucie,FL 34984
Phone(772)785 -9888 ILE COPY
Email pwelchinc@aol.com
C 1 ,73
May 7,2015
Re: Brumund Re-Roof
10725 S. Ocean Drive Lot 205
Jensen Beach,FL 34957
SCOPE OF WORK-.
Remove existing roofing and install new 5-V Crimp Metal Roof(Gulf Coast Supply&
Manufacturing FL# 11651.13)at above referenced residence address over new underlayment
and existing plywood sheathing (Flat Roof Not Included)
DESIGN CRrrERL4:
FBC 2010
ASCE?-10
PROJECT DATA:
BUILDING HIEGHT=9'-0"
A=3'
MEAN ROOF HIEGHT=<15'
ROOF ANGLE=3:12
SHAPE=PITCHED GABLE
ADJUSTMENT FACTOR= 1.00
RVIPROTANCE FACTOR= 1.00
WIND VELOCITY V uit= 165 MPH
WIND VELOCITY V asd= 124 MPH
EXPOSURE=D
ENCLOSURE CLASS=ENCLOSED BUILDING
INTERNAL PRESSURE COEFFICIENT=-0.18
APPLIED UPLIFT DESIGN PRESSURES ON SLOPED ROOF (y
ZONE I (Field)=-44.7
ZONE 2 (Perimeter/Ridge)=-75.5
ZONE 3 (Comers) -110.8
Paul Welch Inc.
Paul Welch P.E. Reg.No. 29945
May 7,2015
10725 S.Ocean Drive Lot 205 Jensen Beach,FL 34957 11-1 1 of
ATTACHMENT REQUIREMENTS:
Metal roofing to be attached with#9-15 x 1 1/Z"long(minimum 1/4"penetration through
plywood sheathing)Woodgrip screws with weather sealing washers spacing as follows:
ALL FASTENERS IN THE FLAT OF THE PANEL
ZONE I (Field):
Fasteners adjacent to ribs one side(Type 1 per product approval)at 16"O.C.
ZONE 2(Perimeter/Ridge):
Fasteners adjacent to ribs one side(Type 1 per product approval)at 16"O.C.
ZONE 3(Corners):
Fasteners adjacent to ribs both side(Type 2 per product approval)at 16"O.C.
Zones 1 &2 Design uplift Pressure: -94.25 psf
Zone 3 Design uplift Pressure: - 13 1.0 psf
Zones 1 &2: 94.25 >75.5 >44.7 Therefore O.K.
Zone 3: 131.0> 110.8 Therefore O.K.
UNDERLAYMENT•
Underlayment shall be Polyglass USA, Inc. FL# 5259.1 "Polystick TU Plus". Polystick TU Plus
shall be installed in compliance with the codified requirements for ASTM D 1970 underlayment
in FBC Section 1507. All seal-lap seams must be firmly rolled with a minimum 281b. hand roller
to ensure full contact and adhesion.
DECK INSTALLATION:
Re-nail all plywood sheathing(19/32"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# 11651.13),(FL# 5259.1),
manufacturer's specifications,and the Florida Building Code 2010.
Paul Welch Inc.
Paul Welch P.E. Reg.No. 29945
May 7,2015
10725 S.Ocean Drive Lot 205 Jensen Beach,FL 34957 2 of 3
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Paul Welch Inc.
Paul Welch P.E. Reg. No. 29945
May 7, 2015
10725 S.Ocean Drive Lot 205 Jensen Beach,FL 34957 � 3 of 3