I would like to report that the option for CFT Restraint is not working in the AISI design module. In the design report the unbraced length remains the length of the member after CFT Restraint is checked and the member capacity is correspondingly reduced…

While trying to design a model which is all steel members, the following error pops up; SteelCollection.dll not registered. I have included a snipping of the error window. Any help would be great. Regards, Scott