] [Thread] [Date] [Author]

[KTarlow(--nospam--at)aol.com]

Dear Steve,

Thanx responding so quickly.  In my example we have a frame (cantivered steel 
columns) on the lower floor and plywood shearwalls on the upper floors.


When considering regidies the plywood walls may deflect 1/8" while the frame 
will deflect .8 inches under similar loading.  The lower floor is therefore 
more flexible.  Rigid Frames are a more flexible system than a shear wall 
system.  We therfore have a fleable system supporting a rigid system (soft 
story).

I would like to find away around this penalty on cntilevered columns, and if 
I could am overlooking something I would like to believe I could use section 
1630.4.2.

Please read C105.3.1 page 127 of the 1996 Blue Book

Please reply

Thanx

Ken Tarlow