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I would assume that solid rods are more dense and rigid than cables, and hence would expand and contact more.
We are venturing into material fatigue and connection fatigue due to stress caused by thermal expansion and contraction.
The larger forces of sway by the wind are no less important, unrealistic to try to get to 100% rigid, even a masonry chimney stack must sway some.
Hinged connections are less prone to failure than fixed or rigid connections, the whole where you want what is long behind me in the structural classes I took over 30 years ago. Now I just hire a structural engineer when I need anything that critical.
This isn't that critical, but would hate to crack my mast unnecessarily.
Last edited by kach22i; 19-Nov-2015 at 1:24 PM.
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