GROUND POLE INSTALLATION (1.2m System)
4
GROUND
ANT
WIND VEL.
DIM “d”
CONC VOL.
DIM “d”
CONC VOL.
DIM “d’
CONC VOL. DIM “d” CONC VOL. POLE
80 MPH
8”
1.3
13”
3.4
8”
1.6
10”
2.5
“A” or
90 MPH
10”
2.0
16”
5.1
8”
1.6
12”
3.6
“B”
1.2M
100 MPH
12”
2.9
18”
6.5
8”
1.6
13”
4.2
“B” or
LFL
110 MPH
14”
3.9
21”
8.8
10”
2.5
16”
6.4
“C”
125 MPH
17”
5.8
24”
11.5
12”
3.6
19”
9.0
“D”
POLE SPECIFICATIONS:
Ground Pole “A” = 2.88 O.D. x .154 Wall (Sch 40) x 72” ASTM A53 or A501 Pipe
Ground Pole “B” = 3.00 O.D. x 9 Ga. (.148 Wall) x 72” Steel - CM PN 611685101
Ground Pole “C” = 2.88 O.D. x 2.88 O.D. x .276 Wall (Sch 80) x 72” Steel ASTM A53 or A501 Pipe
Ground Pole “D” = 3.00 O.D. x .250 Wall x 72” Steel ASTM 120 Mech Tubing
NOTE:
Pole “B” is supplied from factory powder painted and with hole for #3 rebar and grounding screw.
Poles “A”, “C” and “D” are not supplied and must be field drilled
⁵⁄₈
” dia. for #3 rebar and drilled .218
for
¹⁄₄
-20 self tapping grounding screw and galvanized or painted for protection.
1 - Pole and foundation design based on the following criteria:
a) Uniform building code exposure B or C and 1.5 stability factor.
b) Vertical soil pressure of 2000 pounds per square foot.
c) Lateral soil pressure of 400 pounds per square foot.
d) Concrete compressive strength of 2500 pounds per square inch in 28 days.
2 - 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 1. You should consult a local professional engineer to determine your soil conditions
and appropriate foundation.
Exposure “B”
Exposure “C”
Exposure “B”
Exposure “C”
PIER FOUNDATIONS
DEEP FROST LINE FOUNDATIONS
Summary of Contents for 123 I
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