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Reserve Design Strategies

Boundary Orientation

Effects of boundary orientation on windthrow risk

  • As the angle of the boundary moves towards windward (perpendicular to dominant wind direction), wind load increases.
Wind Exposure Index
  • Boundaries are often exposed to more than one dominant wind direction.
  • The combined loading from two directions can be estimated using the ‘Wind Exposure Index.’


Boundary orientation. Show Larger Image

Wind Exposure Index. Show Larger Image
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