User Manual

Table Of Contents
12 Wind Loading
164
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.
Lateral Force (Pound) at wind speed (mph)
Largest Surface
Area (sq ft)
80 100 120 160 200
PTP 500 Series
Bridge - Integrated
1.36 36.6 57.1 82.3 146.2 228.5
PTP 500 Series
Bridge -
Connectorized
1.00 26.9 42 60.5 107.5 168.0
Table 24 - Lateral Force – Imperial
Table 25 - Lateral Force – Metric
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.
Lateral Force (kg) at wind speed (m/s)
Largest Surface
Area (sq m)
30 40 50 60 70
PTP 500 Series
Bridge - Integrated
0.130 12 22 34 49 66
PTP 500 Series-
Connectorized
0.093 9 16 24 35 48