Semi-rigid connections are rarely used in tall building frames. In thi
s paper, the mixed use of rigid connections with semi-rigid connection
s for tall building frames as a way to reduce costs is investigated. U
sing the three-parameter power model for semi-rigid connections, a fou
r-bay eight-story frame is numerically analyzed with four combinations
of mixed use of rigid and semi-rigid connections. It is shown that no
rmalized building drift Delta/H can be kept under 1/400 by properly se
lecting the combination of rigid and semi-rigid connections. Copyright
(C) 1995 Elsevier Science Ltd.