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12 Wind Loading
12.1 General
Antennas and electronic equipment mounted on towers or pole mounted on buildings will
subject the mounting structure to significant lateral forces when there is appreciable wind.
Antennas are normally specified by the amount of force (in pounds) for specific wind
strengths.
The magnitude of the force depends on both the wind strength and size of the antenna.
12.2 Calculation of Lateral Force
The lateral force produced by a single 500 Series bridge (integrated or connectorized model)
at different wind speeds is shown in Table 24 and Table 25.
PTP 500 Series
Bridge - Integrated
PTP 500 Series
Bridge -
Connectorized
PTP 500 Series
Bridge - Integrated
PTP 500 Series-
Connectorized
NOTE: When the connectorized version of 500 Series bridge is used with external antennas,
the figures from the antenna manufacturer for lateral force should be included to calculate to
total loading on the mounting structure.
Largest Surface
Lateral Force (Pound) at wind speed (mph)
Area (sq ft)
80
1.36
36.6
1.00
26.9
Table 24 - Lateral Force – Imperial
Largest Surface
Lateral Force (kg) at wind speed (m/s)
Area (sq m)
30
0.130
12
0.093
9
Table 25 - Lateral Force – Metric
164
12 Wind Loading
100
120
160
57.1
82.3
146.2
42
60.5
107.5
40
50
60
22
34
49
16
24
35
200
228.5
168.0
70
66
48
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