LTB Brace

[EngTipper.]

I have a simply support wide flange beam supporting a slab. The beam needs rotational restraint at the supports as usual, which in this case is at wall plates into a column. However, due to an existing concrete capital a double angle connection into a wall plate will take up less than half of the beam depth, so I'm assuming this wall plate connection no longer provides rotational restraint. I will therefore provide a lateral brace at the top (compression) flange into the slab, which will act as my LTB restraint.

Are there any other issues with regards to lateral restraint of this beam I should be considering? My understanding is that I don't need any specific type of restraint at this wall plate connection because I'm bracing the top flange.

 

[KootK]

Sounds as though you are on the right track. The beam will be coped, right? How far will the top flange connection be from the beam support connection?

Your beam support connection will, of course, need to laterally restrain the bottom flange. Double angles should get that done.