Wind Loading; General; Calculation Of Lateral Force; Lateral Force - Imperial - Motorola PTP 300 series User Manual

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 300 Series bridge (integrated or connectorized model) at
different wind speeds is shown in
PTP 300 Series Bridge -
Integrated
PTP 300 Series Bridge -
Connectorized
PTP 300 Series Bridge - Integrated
PTP 300 Series Bridge -
Connectorized
Wind Loading
Table 21 and Table
Largest Surface Area (sq
ft)
1.36
1.00
Table 21 Lateral Force – Imperial
Largest Surface Area (sq m) Lateral Force (Kg)
0.130
0.093
Table 22 Lateral Force – Metric
136
22.
Lateral Force (Pound) at
wind speed (mph)
80 100 120 160
36.6 57.1 82.3 146.2 228.5
26.9 42.0 60
at wind speed
(m/s)
30 40 50 60 70
12
9
200
107.5 168
22 34 49 66
16 24 35 48