Several analytical and experimental studies have been recently conduct
ed on the behavior of cross-bracing systems subjected to out-of-plane
buckling. Semirigid connections, however, were not considered or model
ed. This paper derives and solves for the exact expressions for evalua
ting the effective length factors of semirigidly connected cross braci
ngs. Moreover, the expressions are derived for tapered systems where t
he bracings arc connected at off-midspan locations. Parametric solutio
ns for the end flexibility coefficient versus the buckling parameter a
re graphically displayed to clarify distinct behavior, and solutions f
or typical cases are provided. In the example cases, a double-wave mod
e versus a single-wave mode is exhibited for the compression and tensi
on members respectively when the tensile and compressive forces are eq
ual, and when the tensile force is zero, both members show a single-wa
ve mode.