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Bolts For The End Plate Moment Connection

Bolts For The End Plate Moment Connection

Bolts For The End Plate Moment Connection

(OP)
Hello everyone,

I am learning connection design now, I have a question about moment connection design:

For the end plate moment connection, must we use slip-critical type connections? what kind of bolts should be used? A325 OR A490?


Thank you very much!


Best regards,



Ping

RE: Bolts For The End Plate Moment Connection

I don't see why you would need to use slip-critical bolts --since they aren't seeing any shear slip shouldn't be an issue.
As far as what you should use, that depends on the loads and forces that your analysis shows the bolts will see.  You can use either.

RE: Bolts For The End Plate Moment Connection

Typical practice for end plate moment connections is to use either pre-tensioned OR slip critical bolts.

Per AISC, any bolted connection that has initial tension in it must be pre-tensioned.  Since the top bolts of an end plate moment connection are usually in sustained tension (from dead loads perhaps) then the pre-tensioning is necessary.

Pre-tensioned bolts and slip critical bolts are installed in exactly the same way except that slip critical bolts require special inspections.

 

RE: Bolts For The End Plate Moment Connection

The slip-critical bolts require adequate faying surfaces as well, right?

RE: Bolts For The End Plate Moment Connection

Yes - I believe you are correct.

 

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