HomeMy WebLinkAboutGround Sign Foundation and Pole Size Calculationr
5'-0 "
4'-0 "
BASIC WIND SPEED = 140 MPH
IMPORTANCE FACTOR = 0.77
EXPOSURE = B
INTERNAL PRESSURE COEFFICIENT = N/A
16-0" COMPONENT AND CLADDING
WIND PRESSURE = N/A
THIS SIGN CONFORMS TO THE
REQUIREMENTS OF FBC 2001,
SECTION 3108
NOTE: THIS DRAWING AND
ATTACHED CALCULATIONS
APPLY ONLY TOTHE SIGN
INSTALLED AT THE ADDRESS
SHOWN ON SHEET 2.
new double sided lighted sign,
extruded aluminum cabinet,
3/16" pan formed acrylic face
existing sign
14'-6 " existing 8" SCH40 A53grB steel pipe
section mod = 16.8 inA3
min req = 16.6 inA3
grade
IDA
existing 4' x 4' x 6' der
2500 psi concrete embedment' Copy
CN FOR
6 -o p�VlS�ON INSpEC�ES ONLY
11.0 MpONENTS INCLU
ND DETAILS.
ONNE�TIONS A AND
....
------ . C CONt4EC-nON
E REAR 11SppNS1B11-STY
DST CONTRACTOR' .
aF. THE SIGN
" HONDA" 231611
sign by GloMaster Sign Co. Inc.
John J. Orlando, PE
165 Old Ridge Road
Macon, GA 31211 478 784 2226
Florida registration # 0044089
scale: 1/4" = V 0" sheet 1 of 3
job 1003G
y Calculations for GLOMASTER SIGN CO., INC.
" HONDA ", job #1003G, 23' 6" OAH ground sign foundation and pole size calculation
To be installed at 3806 LIS#1, Ft. Pierce, FL
Section 3108 of Florida Building Code 2001 applies:
3108.4.2 Type of sign: ground
3108.5 Type of sign face material: 3/16" pan formed acrylic
ASTM D 635 flammability: Jnodcrlics known that meet this requirement
(greater than 2 1/2 " per minute)
3108.5.2 Maximum size of individual plastic facing: 75 ft^2
(less than 200 square feet)
3108.3.2 Wind Pressure refers to FBC section 1606
For free standing ground signs, FBC section 1606 refers to ASCE 7-98 to determine wind load.
1. Determine design wind pressure
Basic wind speed (3 second gust) from Figure 6-1 b., page 37 1.40 mph
Design wind pressure from Table 6-2, page 56 33 psf
Exposure category, page 28 B
Exposure Factor from table 6-2, page 56 1.0
Importance Classification from Table 1-1., page 4 I
Importance factor from Table 6-1, page 55 -0.8
Larger sign dimension (M) 15.00 ft
Smaller sign dimension (N) 3.50 ft
Sign open (>30% open) or closed closed,
M/N 4.3
Force Coefficient Cf from tables 6-11 and 6-12, pages 66 and 67 1-33UII.DING DIVISION INSPECTION FOR
Wind pressure (p) adjusted for Cf, exposure factor and importance factor 30AGN C6*PONENTS INCLUDES ONLY
2. Calculate wind load and turning moments VISIBLE CONNECTIONS AND DETAILS.
Height Hor Dim Vert Dim Af p F H M (b.46 HIDDEN CONNECTIONS AND
z (ft) (ft) (ft) (sf) (Ibs) (ft) ' (ft-IIAILS ARE THE RESPONSIBILITY
0-30 15.0 ' 3.5 52.5 30.5 1601 21.8 3480F THE SIGN CONTRACTOR. y,
0-30 4.0 2.0 .8.0 30.5 244 15.5 3781
0-30 0.7 20.0 13.4 30.5 409 10.0 4086
0-30 0.0 30.5 0 0
Total 73.9 2253 18.9 42685
3. Determine depth of embedment, D in feet
- design is based on poor soil with an allowable soil stress (Si)
Of 2000 psf, i.e. loose fine and coarse sand n
- number of posts= 0 Load per post (P)= 225
-from p. 5-81, Structural Engineering Handbook:
D=((1.18*P)/(b*S 1))*(1 +(SQRT(1+(1.88*b*S1 *H/P))))
assume b (ft)=
D (ft) = 4.1 sheet 2 of 3
e
John J Orlando PE 0044089 , v
165 Old Ridge Road
Macon GA 31211�
478 784-2226
" v Caleulations for GLOMASTER SIGN CO., INC.
" HONDA ", job #1003G, 23' 6" OAH ground sign foundation and pole size calculation
To be installed at 3806 US#1, Ft. Pierce, FL
4. Determine required section modulus (in A3) at base
max stress = (P*(H)*12)/section modulus
max stress < allowable stress
for outdoor signs, allowable stress < (4/3)(0.66)(yield strength)
steel grade
yield strength
-required section > (P*(H)*12)/((4/3)*(0.66*ys))
At base, minimum section modulus =
Use an 8" SCH40 A53 grB steel pipe, section modulus =
References: Structural Engineering Handbook, Gaylord&Gaylord editors,
Fourth edition, McGraw Hill, NY 1997
ASCE 7-98
Florida Building Code 2001
Mechanics of Materials, Beer and Johnston, McGraw Hill, NY 1981
Standard Handbook for Mechanical Engineers, T. Baumeister and
L.S. Marks, editors, Seventh edition, McGraw Hill, NY 1967
John J Orlando PE 0044089 r
165 Old Ridge Road
Macon GA 31211��
(478) 784-2226 '
A53 grB
35000 psi
16.63 in^3
16.80 in^3
sheet 3 of 3'
BUILDING. DIVISION
SIGN COM1PONEN INSPECTION FOR
VISIBLE CO TS IN
NONLY
ALL HIDDEN NECTIONS AND DETAILS.
DETAILS R CONNECTIONS AND
OF THE SIIGNCON RESPONSIBILITY.
TRACTOR.
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