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1. Design Wind Velocity
Velocity Pressure (Vp)
Use Factor(Fu)
2. Height
Width
Centroid of Force (C)
Area of Force (A)
SCANNED
BY
St. Lucie County
Score Board — Port St. Lucie, FL
(130 MPH: 3 Sec. Gust)
(110 MPH: Fastest Mile)
M/N (Large/Smaller)
Therefore the Force Coefficient (cf)
MOMENT = (Vp)(A)(Fu)(Cf)(C)
= 130 MPH
= 30.0 PSF
= 0.90
= 35.0 FT
= 55.OFT
= 24.83 FT
=1925.0 SF
=1.57, which is <= 6.0
=1.20
=1,548,647 LB -FT
3. Existing (6) Single Columns, therefore Moment must be met in Columns:
4. Assume buoyant weight of concrete = 88 PCF
Assume soil pressure = 400 PSF / foot of depth
Soil Resistive Moment (Sr) + Concrete Weight Moment (Mc) >> Moment (calculated)
AEC Services, Inc.
1616 Allison Woods Lane
Tampa, FL 33619
813-684-1234
(f) 813-684-2660
Ron Fair, P.E. FL# 50738
Calculations based on ASCE 7-98
& 2001 Florida Building Code
5.5' Width A=(0.68)(d)(w)[(0.34)(d)(400)] =
114,444
LB -FT
5.5' Length B = (0.32)(d)(w)[(0.90)(d)(400)] =
142,560
LB -FT
15.0 ft deep (d) Total Soil Resistance (Sr) =
99,825
LB -FT
Mc=[(w)(1)(d)(88)][1.0] =
356,829
LB -FT
X6
Columns
Total =
2,140,974
LB -FT
F rs to be 6' Dia. x 15' Dee
Soil Resistive Moment (Sr) + Concrete Weight Moment (Mc) EXCEEDS MOMENT / column (calc'd),
therefore OK
G:VAEC-ENGINEERING-2003\WindCalcs\Scom_Board_35x55_Port_ST Lucie.doc