Why do dirt roads end up with hard ripples?
In: 17
Notice waves on water? It is a similar effect on the road. Yes the road surface is harder but it is flexible and you have the constant motion of traffic on the surface that results look and act like waves.
As told to the class long long ago by an old time engineering professor. Have not thought on that in years. Perhaps they have more up to date information on the cause now.
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