Step 7 of 8
Living Snow Fence Case Study: Mountain Lake, MN
  Introduction
  Snowfall
  Wind Direction
  Fetch Distance
  Snow Water Equiv.
  Snow Transport
  Porosity
Attack Angle
  Setback
  Conclusions
  References



The attack angle of the prevailing winter wind striking the road is used to determine the fence's setback.

The most important consideration for attack angle is the predominant direction of snow transport, or the prevailing direction of the greatest amount of snow transport.

In this case, the wind direction should be taken as 320°.

With a East-West highway, the attack angle of the wind striking the road is 60°.

 

 


 

 

Wind Variables

Prevailing winter wind direction (Oct.-Mar) 320°
Prevailing winter wind direction of snow transport 320°
Wind direction used as
attack angle
320°

 


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