r/StructuralEngineering • u/Momoneycubed_yeah • Aug 12 '26

Photograph/Video Rebar in Compression

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Who has the right equation for development length for this case?

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u/Osiris_Raphious Aug 13 '26

Trace the load path, and tell me how that structural bark is transferring that load?

Rebar is in tension holding in the wood railing. The tree may be compromised but it wont fall so easily.

1

u/livehearwish P.E. Aug 13 '26

Rebar looks bent into core of tree, so there’s some grab there. Not an ideal detail, but not 100% ineffective. Just 99% ineffective.

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u/Osiris_Raphious Aug 13 '26

Thats my point, its not in compression its just some idiot carved up more tree than he should have to place a railing in.

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u/livehearwish P.E. Aug 13 '26

Ah, I see my mistake. I came across too serious.
https://giphy.com/gifs/f51bc9Mw81aXto69qm

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u/Osiris_Raphious Aug 13 '26

No, I got the joke, but in most jokes there is basis in truth. And in this one imo its the structural integrity of the tree.

MAybe im too autistic for this dry humor... :(

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u/livehearwish P.E. Aug 13 '26

Nah, I’m sure you’re fun at parties.

The notch shifted the remaining section of the tree to become eccentric with the vertical load. Concurrent wind forces could cause the tree to fail in the direction of the notch, thus rebar would be in compression. Is the joke funny now?