Motorola PTP 600 Series ユーザーズマニュアル

 

 

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12 Wind 

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12.1 General 

Antennas and electronic equipment mounted on towers or pole mounted on buildings will 

subject the mounting structure to 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 600 Series bridge 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

2 

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 600 Series bridge (integrated or connectorized model) 

at different wind speeds is shown in Table 18 and Table 19. 

 

 

Lateral Force (Pound) at wind speed (mph) 

 

Largest Surface 

Area (sq ft) 

80  100 120 140 150 

PTP 600 Series 
Bridge - Integrated 

1.36 37 

57 

82 

112 

129 

PTP 600 Series 
Bridge - 
Connectorized 

1.00 

27  42 60 82 95