Step 8 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 formula to the right uses the attack angle, fence height, and porosity to calculate the setback of the fence.

The setback calculated for this case study at Mountain Lake, MN, is 165 ft. (50.2 m).


 


Formula for Fence Setback

D = H (sina) (12 + 49P + 7P2 - 37P3)

  • D is the setback (m).
  • H is the height of the fence (m).
  • sina is the attack angle of the prevailing winter wind striking the road.
  • P is the porosity percentage of the fence.

 

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