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Re: wind load to retaining wall

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According to test data given in Hoerner's book,
"Aerodynamic Drag", the pressure coefficient of a
rectangular plate depends on its aspect ratio = height
to length. Pressure coefficient = 2 only for an
infinitely long wall. For a wall whose length is less
than 10x its height, the pressure coefficient is about
1.2. In this case the pressure coefficient on the rear
side of the wall is -0.5.

I would use these values to compute the wind loads.

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