Knee brace to beam to beam connection 1

[GalileoG]

(See sketch)

I have a beam spanning into a beam perpendicular to it. I also have a knee brace where the workpoint is at the center of the perpendicular beam. Does anyone have a standard detail on how to connect the knee brace in such a way as to have the workpoint at the center of the perpendicular beam?

Thanks all!

Clansman

If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.

 

[jike]

Add a gusset plate on the beam. See sketch.

 

[GalileoG]

Thanks Jike,

Anything extra I need to account for except for the added shear to the bolts on my shear tab (beam to beam conn.)?

Clansman

If a builder has built a house for a man and has not made his work sound, and the house which he has built has fallen down and so caused the death of the householder, that builder shall be put to death." Code of Hammurabi, c.2040 B.C.

 

[BAretired]

You need to check the dimensions of your gusset plate and the welding to the beam by considering both horizontal shear and bending moment.

BA

 

[civeng80]

Don't want to sound pedantic, but this is not a knee brace its bracing !

A knee brace from my side of the woods is a short strut from column to beam to stiffen the beam to column connection.

 

[rowingengineer]

Personally I would move the intersection point and make the beam take the eccentric bending moment, instead of relying on the on the gusset and web to move the forces.

Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it

 

[weab]

This is unusual for me so forgive me if I don't understand what supports what.

I am assuming that the "knee brace" supports the beam that is into the page. I don't care for this connection. The supported beam forces a moment into the shear tab connection and a guaranteed twist. At the very least, the shear tab should be full depth engaging both flanges thereby saving the beam web and preventing a twist of the beam. I would prefer to make the beam across the page as the through member. The beam into the page should frame into it.

If the beam into the page supports the other, then my answer is different.

 

[hokie66]

I agree with jsdpe that what supports what affects the answer. If the angle is a knee brace per the OP, an angle is an unusual shape to use for this purpose. If it is just diagonal bracing as civeng80 thinks, what takes the vertical component of the brace? Perhaps Clansman will clarify.