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ECEIVED
WIND UPLIFT PRESSURE CALCULATIONS
SEP 1 3 2019
Project Name
SF Residence -Sloped Roof
Report No.
SCANNED
Project Address
7220 Marsh Terrace
Port St. Lucie, FL
BY
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St. LUf`.1P f'.AJJPi�Ji
Deck Substrate
Wood
Mean Roof Height
14.0 Feet
Configuration
Steep Slope
Roof Area (Approx.)
4140 Sq.Ft.
Category
II
Roof Width
49.0 Feet
Exposure Condition
C
Perimeter Width
4.9 Feet
Building Type
Enclosed
Parapet Height
0.0 Feet
Base Wind Speed
170 mph
Sloped Roof Type
Slope V
5.0 Slope H
12.0 Slope Angle
22.62
Uplift Pressures
qr = 0.00256 K� Ka Kd V2
P = q. (GCP - GCP;)
qz Kz
Krt Kd V
GCP GCP1
53.721 0.850
1.005 0.85 170
-0.90 0.18 Field
-1.70 0.18 Perimeter
-2.60 0.18 Corner
Field P1 aft,
-58.02 psf P, asd
-34.81 psf
Perimeter P2un.
-100.99 psf P2asd
-60.60 psf
Corner P3 n.
-149.34 psf P3asd
-89.61 psf
System Design Pressures
Field
P, -34.81 psf
Perimeter
P2 -60.60 psf
Comer
P3 -89.61 psf
Proposed System Tarco Roof Underlayments
Product Approval No. FL10450-R10 (Page 6 of 10) System No. 2
System Design Pressure -120 psf
Max. Calculated Uplift Pressure -89.61 psf
These calculations have been done in accordance with ASCE 7-10, based on the information provided by the
contractor. Since the system design pressure is greater than the calculated maximum uplift pressure in any zone,
the aforementioned system may be used on the subject roof. The roof system must be installed in accordance
with Florida Building Code, including fire rating requirements & the roof system manufacturer's recommendations.
Verify suitability of using this system with Bldg. Dept. before installation. We rect�mteije ying underlayment.
Sincerely Q ���llxx�'�-01
Forensic Engineering Consultants, Inc. VI WED FOR
K • N ,� CODE COMPLIANCE
R. N. Sailappan, RE / J �/`I'lI9 ST. LUCIE COU
Principal Engineer BOCC y� J
Florida Registration No. 466K 61Y r
Forensic Engineering Consultants, Inc. (CA# 8265), P.O. Box 970034, Boca Raton, FL-33497 Ph (561) 9018490 Fax (561) 218 3830