Steel Beam bearing on stud wall 1

[WARose]

I have a situation where I'm going to have a steel beam come down and sit on a stud wall. Does anyone have a detail for this? A Simpson connection maybe? Pretty much all the connections I am envisioning are going to have issues as far as providing the proper rotational restraint AISC expects.

 

[BAretired]

Why would you need rotational restraint?

BA

 

[WARose]

Why would you need rotational restraint?

In section F1 of AISC (13th Ed., p.16.1-46) it says: “The provisions in this chapter are based on the assumption that points of support for beams and girders are restrained against rotation about their longitudinal axis.”

I personally think you can satisfy that by torsional support at other locations (or just overall).....but it's got to be somewhere.

 

[TehMightyEngineer]

Provide an end plate or stiffeners at the beam bearing point and bolt the bottom flange to the wood. In the 13th edition manual, check out page 2-13 and 2-14.

Ian Riley, PE, SE
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries

https://www.facebook.com/AmericanConcrete/

 

[TehMightyEngineer]

Here's a detail I have used in the past:

Ian Riley, PE, SE
Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries

https://www.facebook.com/AmericanConcrete/

 

[WARose]

Provide an end plate or stiffeners at the beam bearing point and bolt the bottom flange to the wood. In the 13th edition manual, check out page 2-13 and 2-14.

Yeah, I thought about using stiffeners myself....but the architect is insisting on some (wood) enclosure for the beam that precludes it. Thanks for the detail.

 

[dik]

I've not put a steel beam on a wood stud wall... but, have used OWSJs bearing on stud walls... just created a bearing plate to transfer the load in compression perp to the grain and a couple of holes in the plate for attachment.

Dik

 

[msquared48]

If you attach a wood nailer to the top of the beam to nail off the plywood diaphragm, and provide a connection to the column below, you have satosfied rotational restraint.

Mike McCann, PE, SE (WA)

 

[BAretired]

If the beam is under a plywood diaphragm, why would the architect insist on a wood enclosure around the beam?

BA

 

[WARose]

If the beam is under a plywood diaphragm,....

It isn't.

.....why would the architect insist on a wood enclosure around the beam?

And thereby hangs a tale......it's a complicated situation.....but the beam will be visible in the room (due in part to it's depth). I tried to talk the architect into just a wood "box" around the perimeter.....but he is insisting on covering each face with wood to where it looks like a gigantic wood beam.

Creative guys aren't they?

 

[msquared48]

Tell him you can use ironwood and make an I beam for him.

Mike McCann, PE, SE (WA)

 

[dik]

M^2... ever try working with that stuff... rather than cutting it to fit, it would likely be easier to weld... It is really tough stuff...

Dik

 

[msquared48]

My son made a deck with it.

Yes, Tough and very expensive.

Have to predrilled all connections.

Mike McCann, PE, SE (WA)

 

[vmirat]

Will the architect allow a steel post in the stud wall? Something like a 3"pipe with a bearing plate on both ends.