Cambium PTP 450 series, Руководство пользователя

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Site planning PTP 450 User Guide
ptp-450 (July 2014)
2-37
Calculation of lateral force (US)
The magnitude of the lateral force can be estimated from:
Force (in pounds) = 0.0042Av
2
Where: Is:
A surface area in square feet
v wind speed in miles per hour
The lateral force produced by a single PTP 450 unit at different wind speeds is shown in Table 18 .
Table 18 Lateral force - US
Largest surface area (square
feet) Lateral force (lb) at wind speed
(miles per hour)
80 100 120 140 150
0.29 (BHS) 7.8 12 18 23 27
Capabilities of the PTP 450 Series
The structure and mounting brackets of the BHM are capable of withstanding wind speeds up to:

190 kph (118 mph) – 5 GHz Sector Antennas

216 kph (135 mph) – 3.5 GHz, 3.6 GHz Sector Antennas
Ensure the structure to which BHM is fixed is also capable of withstanding the prevalent wind speeds and loads.
The structure and mounting brackets of the BHS are capable of withstanding wind speeds up to 190 kph (118 mph).
Ensure that the structure to which the BHS is fixed to is also capable of withstanding the prevalent wind speeds and
loads.
Wind speed statistics
Contact the national meteorological office for the country concerned to identify the likely wind speeds prevalent at
the proposed location. Use this data to estimate the total wind loading on the support structures. Sources of
information:

US National Weather Service: http://www.nws.noaa.gov/

UK Meteorological Office: www.meto.gov.uk