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RE: Moment Frames with Slip Critical Shear Connection[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Moment Frames with Slip Critical Shear Connection
- From: "Carter, Charlie" <carter(--nospam--at)aisc.org>
- Date: Mon, 26 Jul 2004 08:28:18 -0500
> … SDC C … designed as "steel structures not specifically
>detailed for seismic resistance" (R=3). The moment connection
>consists of flange plates welded to the column and beam. The
>shear connection calls for the bolts in the shear connection to
>be slip-critical. I thought this was a requirement for moment
>connections? Do the bolts in the shear connection have to be
When bolts and welds share load on the same faying surface, the AISC Spec has a requirement that the bolts be slip critical. In this case, the bolts and welds do not share the same load, so that requirement does not apply.
I have seen these connections specified both ways and ultimately it is a decision to be made by the engineer of record. I personally do not think a slip of any magnitude is likely in the shear connection, since that tends to be brought into bearing by member self weight during erection. As a result, I would be comfortable using bearing bolts instead of slip-critical bolts.
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