Torsionally restrained connection detail 1

[novembertango88]

Hi all,

I've got a newly applied torsional moment to an RHS which is currently fasted to a PFC on both ends with a single bolt. Please see attached sketch.

If I attach a flat bar to the top of the RHS and tie it back to the PFC does this provide torsional restraint?

I have been looking at this document SCI P385 and it seems to suggest a full depth end plate is required (

https://www.steelconstruction.info/images/6/6f/Sci_p385.pdf).

nb. the torsional moment acts in only one direction.

Thanks

 

[HTURKAK]

https://www.steelconstruction.info/images/6/6f/Sci...).[/URL]

nb. the torsional moment acts in only one direction.]

Just look to the page 41 of the document that you released (SCI 358 ) :

If you attach a flat bar to the top of the RHS and tie it back to the flange of channel , this set up will provide torsional restraint. The end of RHS could be closed with a cap for better resistance.

 

[novembertango88]

Blimey.
So it does hturkak. Thanks for that I was going a bit snow blind.

 

[MIStructE_IRE]

Well there be a tendency for you cranked tension member to want to straighten out when pulled? A triangular stiffener instead would sort this out.

 

[dik]

How large is the torsional moment? A couple of flare bevel welds may work.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[novembertango88]

Not able to weld unfortunately as the channel members are already in place.

How do you design a bevel weld, do you do it as a fillet weld but change the angle to suit the rounded edge on the hollow section?