Chapter 2: System Hardware
Wind blowing on the device will subject the mounting structure to significant lateral force. The
magnitude of the force depends on both wind strength and the surface area of the device. Wind loading
is estimated using the following formulae:
Force (in kilograms) = 0.1045aV
2
the surface area in square meters
wind speed in meters per second
Force (in pounds) = 0.0042
Av
2
the surface area in square feet
wind speed in miles per hour
Applying these formulae to the ePMP device at different wind speeds, the resulting wind loadings are
shown in Table 26 and Table 27.
Table 26 ePMP 4500L Access Point wind loading (Kg)
Largest
surface area (square
meters)
Wind speed (meters per
second)
ePMP 4500 Access Point with Sector
Antenna
Table 27 ePMP 4500L Access Point wind loading (lb)
Largest surface area (square
feet)
Wind speed (miles per
hour)
ePMP 4500 Access Point with Sector
Antenna