I'm looking for a good way to correct and arrest horizontal splitting of some floor joists where they rest on the top-plate below.
The joists are 2"x8" (nominal), spaced 12" OC, and the ends away from the central beam rest on the top-plates of the basement's exterior walls. The joists are each about 14' long, but I don't see any signs of trouble in the middle, for example sagging. AFAICT, each joist-end is held in place by a single toe nail into the top-plate below, and whatever nails come in form the subflooring above.
Many of the joists have cracks, either hairline or larger, starting at the end of the joist resting on the top plate, and extending several inches towards the far end of the joist. I suspect this was caused by (a) the toe-nailing and (b) 50 years of load.
Edit: some examples:
My ultimate goal is to ensure the structural integrity of the framing. Ideally without sistering the joists, because that would cause various additional hassles.
So I'm thinking to reinforce the problematic joists ends using steel L-brackets, so as to resist the horizontal spreading of the joist wood where it's resting on the top-plate. By adding a bracket on both sides of each joist, I hope to fully prevent any horizontal splitting of the joist.
Any thoughts on the viability of this approach?