LVL connection at Corner 1

[palk7 EIT]

Hi Everyone,

I am working on a connection detail at the corner of a building, where an LVL cantilevers 1' and picks up a steel beam. Also on top of this junction, there is a column load. So that's why not looking into Simpson hanger's in this particular case, however in these situations is it common to provide a bent pre-fab saddle plate (L-shape) and fasten together with bolts?
I have attached the detail for reference.

Thank you very much!

 

[CANPRO]

Can you extend the LVL slightly further so the corner column bears directly on the LVL? I think that simplifies your W10 to LVL connection and reduces the amount of load going through your connection.

I'd be looking to transfer the load to the LVL through bearing on the top of the beam - picture an inverted saddle...essentially hanging the steel beam from the top of the LVL. I'd upload a sketch, but I don't have time for that right now.

 

[Craig_H]

I'd probably have a stiffener welded on the W10 beam that acts as a knife plate into the LVL between its middle plies. That takes the wood packing of the steel beam out of the load path and simplifies the connection.

 

[CANPRO]

Craig, I had the same initial thought as you but I don't think I'd weld the stiffener the W10 - in that scenario you'd need to feed the knife plate into the LVL and install your bolts through the LVL in its final position. I'd be more inclined to have a knife plate bolted to the LVL and maybe some sort of end plate connection the W10. In either case, the connection eccentricity would have to be dealt with at the LVL side.

 

[Craig_H]

I was trying to figure out how to deal with that eccentricity too. With a 12" deep LVL, that doesn't leave much room for a moment couple in the bolts through the LVL. A super long knife plate to form a moment couple, or perhaps some fancy strap work might be able to reconcile the moment, but it's not ideal. I agree your solution would be superior if it's workable.

 

[kipfoot]

I agree with canpro that it's better to have the column load directly on the LVL.

 

[palk7 EIT]

CANPRO, yes the steel beam is an existing one so could be cut as required and then extend the LVL but still it would form the same L-Shape at the corner. In the inverted saddle method you suggested are you referring to one member sitting on top of other or just the plate is inverted and both the members are still flush?

Thank you

 

[CANPRO]

I was going to circle back and provide a sketch for what I described above, but kipfoot's sketch is exactly what I had in mind. The W10 side of the connection needs to be fairly rigid to reduce the torsion induced on the LVL.

 

[palk7 EIT]

Kipfoot, thank you for the detail! as well in this case the cap plate has to be bolted to LVL right? and to avoid bolting near the outside end could it be done inside?

CANPR0, yes the W10 will be braced by the floor system which I believe wont translate heavy torsion in the LVL

 

[kipfoot]

Yes, you'll bolt or lag the plate assembly to the LVL. You could place them wherever is best. You may not have the clearance I'm showing in the sketch near the end of the LVL.

If it's not clear, I was trying to show an upside down 'U' plate assembly. This way, the load from the W10 is carried through bearing and the fasteners would be to stabilize the assembly. I think I'd design fasteners to carry the eccentric moment from the W10 connection.