So I've taken out a section of wall between my kitchen/living room and am leaving only a knee wall (41" high) that will have a breakfast bar on top of it. Removal of the wall went fine, however, the remaining knee was is fairly flimsy and does not tolerate side load at all. Kitchen cabinets will go along this wall and probably add some stiffness, however, the fact I will put a breakfast bar on it makes me think I need more rigidity.
I would like to stiffen the wall and am thinking the most appropriate solution would be using a Simpson hold down, although I'm uncertain on both the hardware and blocking that is necessary. The wall itself does not sit directly above a floor joist but is instead offset so that the outside edge of the wall follows an inside edge of the joist (see picture below). I'm thinking that bolting the bracket through the baseplate to the subfloor won't do much, so it was my plan to run a 4x4 the length of the wall in the corner of the joist and subfloor, then run a threaded rod through it.
- Does this sound like a reasonable solution for bracing an existing knee wall?
- Is that an appropriate hold down for this application?
- What hardware would you recommend securing the 4x4 with to the joist/subfloor?
- What diameter threaded road would you recommend for the anchoring?