Ground pole installation 2 ³⁄₈ ” o.d. x 72” long, Fig. 1.0 – Channel Master 900 User Manual
Page 4
GROUND POLE INSTALLATION
2
³⁄₈
” O.D. x 72” LONG
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72
37
d
36
1" to 2"
SLOPE FOR
WATER RUN OFF
GRADE
BELOW
FROST LINE
OVAL END
MIN.
DIA.
2
³⁄₈
" O.D.
PIER
FOUNDATIONS
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72
37
d
48"
1" to 2"
SLOPE FOR
WATER RUN OFF
GRADE
BELOW
FROST LINE
OVAL END
MIN.
DIA.
NOTE:
48" may be
increased, concrete
and length of rebar
will increase
accordingly.
2
³⁄₈
" O.D.
DEEP
FROST LINE
FOUNDATIONS
,
,
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(SEE NOTE)
1-1.5"
APPROX.
2"
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(4) #3 x 24" MIN.
AT 90˚ APART
(SEE NOTE)
ANT
WIND VEL.
DIM “d”
CONC VOL.
DIM “d”
CONC VOL.
GROUND POLE
80 MPH
9”
1.5 FT
3
7”
1.2 FT
3
90 MPH
11”
2.2 FT
3
7”
1.2 FT
3
Mo. 611652931
.90M
100 MPH
13”
3.0 FT
3
8”
1.5 FT
3
110 MPH
15”
4.0 FT
3
10”
2.4 FT
3
SEE NOTE 1
125 MPH
18”
5.8 FT
3
12”
3.5 FT
3
80 MPH
10”
1.8 FT
3
7”
1.2 FT
3
Mo. 611652931
1.0M
90 MPH
13”
3.0 FT
3
8”
1.5 FT
3
100 MPH
15”
4.0 FT
3
9”
1.9 FT
3
SEE NOTE 2
108 MPH
16”
4.6 FT
3
10”
2.4 FT
3
PIER FOUNDATIONS
DEEP FROST LINE FOUNDATIONS
POLE SPECIFICATIONS:
2” SCH 40 2
³⁄₈
” O.D. x .154 Wall x 72” Long Steel - CM PN 611652931 w/Oval End and
Powder Paint Finish.
1. When wind velocity exceeds 108 MPH on the .90m antenna at heights shown, the
ground pole must be a heavy wall pipe as follows: 2” pipe (2
³⁄₈
” O.D.) Schedule 80 (.218”
wall thickness) and purchased locally. Field weld
¹⁄₄
x 1
¹⁄₂
x 5 key as shown in Fig. 1.0
to prevent rotation in the concrete or use 3” O.D. ground pole and AZ/EL cap.
2. These charted values based on using Model 611652931 ground pole, 2.375 O.D. x
1.54 wall. When wind velocity exceeds 108 MPH, use 3” O.D. ground pole and AZ/EL
cap.
3. Pole and foundation design based on the following criteria: (a) Uniform Building Code
Exposure 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 compres-
sive strength of 2500 pounds per square inc h in 28 days.
4. 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 con-
ditions and appropriate foundation.
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6"
APPROX.
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KEY
¹⁄₄
x 1
¹⁄₂
x 5
FIELD WELD
.21
.21
FIG. 1.0