Andrew Type 123 Class I & II Montagehandleiding - Pagina 5

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APPENDIX B
1.2m Antenna Survival Windloads at 125 MPH Velocity
16.97
OFFSET
F H
40.9" HEIGHT
(1039 mm)
M T
F V
M O
ELEVATION DEGREES
FORCE (POUNDS)
MECHANICAL
BEAM
F
H
0
17
1285
10
27
1217
20
37
1182
30
47
1071
40
57
943
50
67
822
60
77
686
70
87
515
M o Based on 40.9" (1039 mm) from Mounting Surface of Center Line of Antenna
Values shown represent maximum forces for any wind direction and
include 1.5 F s . Height and exposure factors from uniform building code
are NOT included.
13
o
(NORMAL TO ANTENNA FACE)
F
= Horizontal Force
H
F
= Vertical Force
V
M
= Torsional Moment
T
M
= Overturning Moment
O
MOMENTS (FT-LBS/N-m)
F
M
M
V
T
O
-35
500
4,380
-257
488
4,148
-497
464
4,029
-711
421
3,650
-857
357
3,214
-943
299
2,802
-985
232
2,338
-762
178
2,096
GROUND POLE INSTALLATION (1.2m System)
2.88" or
3.00" O.D.
C
ANT
40.9"
1" to 2"
SLOPE FOR
35.8"
WATER RUN OFF
72"
GRADE
40"
#3 REBAR x
DIA. OF PIER
d
INSERT THRU HOLE
BELOW
MIN.
IN TUBE & CENTER
FROST LINE
DIA.
PIER FOUNDATIONS
Exposure "B"
Exposure "C"
ANT
WIND VEL. DIM "d"
CONC VOL. DIM "d"
80 MPH
8"
1.3
13"
90 MPH
10"
2.0
16"
1.2M
100 MPH
12"
2.9
18"
LFL
110 MPH
14"
3.9
21"
125 MPH
17"
5.8
24"
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
for
-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.
35.8"
NOTE:
72"
50" depth may be
increased,
concrete and
length of rebar
will increase
accordingly.
#3 REBAR x DIA. OF PIER, INSERT
THRU HOLE IN TUBE & CENTER
(4)#3x24"MIN.
d
o
AT 90
APART
MIN.
(SEE NOTE)
DIA.
DEEP FROST LINE FOUNDATIONS
Exposure "B"
Exposure "C"
CONC VOL.
DIM "d'
CONC VOL. DIM "d" CONC VOL.
3.4
8"
1.6
10"
2.5
5.1
8"
1.6
12"
3.6
6.5
8"
1.6
13"
4.2
8.8
10"
2.5
16"
6.4
11.5
12"
3.6
19"
9.0
" dia. for #3 rebar and drilled .218
4
2.88" or
3.00" O.D.
1" to 2"
SLOPE FOR
WATER RUN OFF
GRADE
50"
(SEE
NOTE)
2"
APPROX.
2"
BELOW
FROST LINE
GROUND
POLE
"A" or
"B"
"B" or
"C"
"D"
Ground Pole
Must Be
Vertical In
All Directions
Within .19 Inches
At Top (0.3ß)
Bubble
Level