Building seismic dampers.
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Previously:
https://www.homemadetools.net/forum/...151#post130337
https://www.homemadetools.net/forum/...478#post117038
https://www.homemadetools.net/forum/...078#post207395
https://www.homemadetools.net/forum/...322#post218729
https://www.homemadetools.net/forum/...512#post222775
