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Which circumstances?

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Tension/compression limits obligate the use of nonlinear cases that do not always run ok. I Can't reduce the K or L on the weak axis because I don't have any bracing on the weak axis. That will produce a wrong design.

None?

Oh sorry. [sadeyes] Yes I was talking about washers. Oups. The main idea is for bolted connections on cold formed material is there any increase in capacity for using a washer on head additionally to the washer that goes with the nut?

Is there a way to use this method with ETABS?

Anybody is suggesting me use double nuts on bolted connections for primary frame of buildings -one under the head of the bolt and one under the nut- Is there any note or recommendation on the AISC codes that prohibits or suggests these can't be done? Thanks.

Do you have a diaphragm tag D1 assigned to that story? Drift required.

Was the option "do you want to reiterate analysis and design" removed onrecent versions of ETABS? Any way to reactivate?

I'm seeing important differences between the endplate calculations/simulations for moment connection using IDEA compared to RAM conn. RAM is given failure for prying action on thin endplates and the same connections are complying with IDEA with some plastic deformation. Has IDEA a way to...

Thanks a lot. I guess this washer can't be part of a prequalified connection for example.?

Excellent Thanks.

Does the backing plate exist (to reinforce the flange column) for a Beam-To-Column moment connection in AISC literature?

Is it possible to do a partial fixed base plate? How? Considering the foundation is capable, is there any way to do a partial fixed base plate for a steel column? I guess if partial something in the connection will yield. Is that safe?

I've found the answer on Design Guide 29.

Is there a way to design the braces-bream-column connections for SCBF with RAM? There is no option to weld the beam to the column, just clip or angle connections than produce fail of the web. Thanks.

Yes, the problem is that you shall select manually sections with KL/r>200 ... auto select lists don't work if that condition exists. SAP2000 will discard any section even if it's a beam (not compression).

Something like this is what I'm thinking!. Possible?

Special system per ASCE 7 with inclined columns? Is any special system in the ASCE 7 compatible with inclined columns? Thanks.

KL/r<200 how make SAP2000 omit this requirement on auto-select lists?