About the author  ⁄ Shane C. Morrison, Ph.D.

Shane C. Morrison, Ph.D., is a structural engineer and presently serves on the Engineering Advisory Committee for the Aluminum Design Manual with the Aluminum Association. He can be reached at morrisonforge@gmail.com.

Wind-induced vibration is an ever-present issue in lighting support design. It can cause seemingly magical movement of lighting poles, even when no storm or extreme wind event is present. Engineers recognize this “pole dance” as resonance. When there is too much of it at high amplitudes of deformation, the structure has a high likelihood of failing.

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STRUCTURE magazine