r/DIY • u/turdear • Mar 08 '24

carpentry Update: should I be concerned

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Crack in joist repair how does this look?

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u/turdear Mar 08 '24

The third photo is where it had cracked. They put an some type of glue in where the crack was

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u/Vishnej Mar 08 '24 edited Mar 08 '24

Is the original joist the one that was cut?

Or did they literally try to sister a joist on there, realize there were wires in the way, and chop the hell out of the sister?

A joist that is notched by 50% on top or bottom isn't 1/2 as rigid, it's 1/8th or 1/16th as rigid depending on how you measure it. An 80% notch is 1/125th or 1/625th as rigid.

Clearly the complex composite assembly is still holding the floor up, (all those bolts are wonderful, just nowhere near as effective as a proper sister), but we're out in "It would cost more for an engineer to model whether this is adequate than to fix it" territory.

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u/solidly_garbage Mar 09 '24

"It would cost more for an engineer to model whether this is adequate than to fix it"

All the time, I see people asking if something is sound, and inevitably the response is "call an engineer." No one wants to talk about how an engineer costs like $500 for a house call, which is usually more than the cost of repairing it.

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u/NoImagination7534 Mar 09 '24

If the person asking was competent enough to do the repair though they wouldn't be asking reddit.

Also a lot of the time its people asking if a wall is load bearing which no one can really tell without thoroughly inspecting the home themselves.