Table 2-1 Lateral Force - Metric; Table 2-2 Lateral Force - Us - Motorola PTP 600 series User Manual

Site planning
Calculation of lateral force
The PTP 600 Series, with or without the integral antenna, is essentially a flat structure
and so the magnitude of the lateral force can be estimated from:
Force (in pounds) = 0.0042 . A . v
Where A is the surface area in square feet and v is the wind speed in miles per hour.
The lateral force produced by a single PTP 600 ODU (integrated or connectorized
model) at different wind speeds is shown in
Table 2-1 Lateral force – metric
Integrated
PTP 600
Connectorized
PTP 600
Table 2-2 Lateral force – US
Integrated
PTP 600
Connectorized
PTP 600
NOTE
When the connectorized ODU 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.
2-8
4Gon www.4Gon.co.uk info@4gon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
2
Largest Lateral Force (Kg) at wind speed
Surface Area
(sq m)
30
0.130 12
0.093 9
Largest Lateral Force (lb) at wind speed
Surface Area
(sq ft)
80
1.36 36.6
1.00 26.9
Chapter 2 Planning considerations
Table 2-1 and Table 2-2.
(m/s)
40 50
22 34 49
16 24 35
(mph)
100 120 140
57.1 82.3 146.2
42 60.5 107.5
phn-0896_012v000
60 70
66
48
150
228.5
168.0
Jul 2010