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Havard Engineering Inc.

E-mail: dhavard@rogers.com

Steel Lattice Towers Subjected to Steady Winds

Steel lattice structures can vibrate due to direct wind action on the members if they are sufficiently long and thin. The right hand tower in the photo has fewer braces in the arms than that on the left, and some towers of this design experienced failure due to fatigue of the hangers. An add-on damping solution was developed to mitigate the vibrations at much lower cost than conventional solutions, such as adding stiffeners to brace the hangers.

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Updated October 9, 2006