My question is: Is it permissible to use a single diagonal brace for a line of resistance, which would act either in tensiion or compression to resist seismic forces? I remember something in the '97 UBC about you couldn't use "tension only" bracing, (with some exceptions), but can't find any restrictions in the CBC/IBC, AISC, ASCE, etc., other than the fact that the referenced AISC 341 doesn't mention them.
Thanks in advance,
Larry Hauer, S.E.
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