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GROUND POLE INSTALLATION (114 mm or 4.50 in OD)
1270 mm
(50")
2438 mm
424 mm
(96")
(16.7")
9.5 x 254 mm
(#3 x 10") rebar
Minimum
diameter of pier.
Diameter
Insert through
hole in tube and
center.
Pier Foundations
WIND VELOCITY
100 mph
125 mph
POLE SPECIFICATIONS:
Ground Pole "A"- 4.50 O.D. SCH 40 (4.026 I.D.) Steel - (Metric = 114.3 mm x 102.3 mm I.D.)
Ground Pole "B"- 4.50 O.D. SCH 80 (3.826 I.D.) Steel - (Metric = 114.3 mm x 97.2 mm I.D.)
NOTE:
1. Poles are not supplied (purchased locally to ASTM A501) and must be field drilled 5/8 diameter for M10 #3 rebar, drilled
5.55 mm (.218") for 1/4-20 self tapping grounding screw and galvanized or painted for protection.
2. Pole and foundation design based on the following criteria:
a. Uniform building code Exposure C and 1.5 stability factory.
b. Vertical soil pressure of 2000 pounds per square foot. (9765 Kilograms/meter square)
c. Lateral soil pressure of 300 pounds per square foot. (1465 Kilograms/meter square)
d. Concrete compressive strength of 2500 pounds per square inch (176 Kg/cm
CAUTION: The foundation design shown does not represent an appropriate design for any specific locality, since soil
conditions vary and may not meet design criteria given in Note 2. You should consult a local professional engineer to
determine your soil conditions and appropriate foundation.
114 mm
(4.5" O.D.)
Antenna
Center Line
25 mm
to 51 mm
1410 mm
(1" to 2") slope
(55.5")
for water run-off
Grade
1270 mm
(50")
Below
D
Frost Line
DIMENSION D
CONC VOLUME
mm (Inches)
Cubic Meter (CUYD)
762 (30)
934 (37)
Ground Pole Must Be
Vertical in All Directions
at Top
Bubble
Level
NOTE:
1.7 m (66")
may be
increased.
Concrete
and length
of rebar will
increase
accordingly.
#3 rebar x diameter
of pier
Insert through
hole in tube and center.
#3 rebar x .6 m (24")
at 60˚ apart (See note)
( Six Places)
Deep Frost Line Foundations
DIMENSION D
mm (Inches)
.61 (.80)
610 (24)
.91 (1.2)
762 (30)
4
1270 mm
(50")
2438 mm
(96")
D
Minimum
Diameter
Bottom View
CONC VOLUME
Cubic Meter (CUYD)
.54 (.70)
.76 (1.0)
) in 28 days.
2
114 mm
(4.5" O.D.)
25 mm
to 51 mm
(1" to 2") slope
for water run-off
Grade
Approx.
1676 mm
51 mm
(66") (See Note)
(2")
51 mm (2")
Below
Frost Line
GROUND POLE
A
B
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