utility / plumbing holes that are no longer in use...
can epoxy be used to reconstitute the void?
From what I can gather about joists is that the high side of a joist is in compression and the low side is in tension.
Supposedly epoxy has excellent resistance to compression so it is my assumption then that it would work well for holes on the high side. Please correct me if I am wrong.
Concerning the low side of a joist (that is in tension):
Supposedly some epoxy formulas have high tensile strength, does this mean it could be used on the low side?
or am I confusing tensile strength and tension...
I found this article about some guy embedding a steel reinforcing rod on the low side of a joist:
in this article he does that to a supplemental joist, but the manufacturer that has this project posted has a suggested steps of how to do the same to a joist that is already in place... except that the reinforcing rod does not extend onto the support beam/sill plate because the joist is already in place.
Would a project like this really add resistance to tension in a joist above what the wood already provides?
I have also seen pictures of voids in lumber being mended with embedded stainless steel helical bars and epoxy. Could something like this restore some integrity to low side voids in joists?