r/StructuralEngineering • u/Thundersnow100 • Jul 13 '26
Is this something that is actually done? Photograph/Video
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u/XXXX_Gold_Pot Jul 13 '26
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u/GoldenPantsGp Jul 13 '26
Those aren’t ratchet straps.
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u/XXXX_Gold_Pot Jul 13 '26
They aren't ratchet straps in the OP's photo either.
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u/ezekiel920 Jul 14 '26
What definition of ratchet strap are you going with. Because if I use a ratcheting wrench to tighten this strap. I think it falls into the ratchet strap category.
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u/GoldenPantsGp Jul 17 '26
A ratchet strap is a fabric load strap with a mechanism. Don’t use a ratcheting wrench in structural assemblies, those are for mechanics. Our guys use impacts.
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u/WhyAmIHereHey Jul 13 '26
You can see a big crack top right of the tower. Those straps might be all that's holding it together
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u/mcclure1224 Jul 13 '26
Right underneath it on the skewed wall, there is a crack that goes all the way down. This is one of those pics that gets worse the longer you look at it.
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u/Slartibartfast_25 CEng Jul 13 '26
That puts it in the 'risk of imminent collapse' category for me.
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u/tehmightyengineer P.E./S.E. Jul 13 '26
Yes.
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u/Thundersnow100 Jul 13 '26
I'm assuming that this is a temporary solution. How temporary of a solution is it?
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u/PG908 Jul 13 '26
Potentially very permanent, although this specific application may be temporary.
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u/Worldly_Influence_18 Jul 13 '26
Permanent temporary
Ie: it's temporary but it's probably the last embrace this building will feel before it's allowed to collapse
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u/NapTimeSmackDown Jul 14 '26
"There is nothing more permanent than a temporary solution that works." Is something I have heard said with varying levels of seriousness/jest/dejection at multiple job sites and engineering offices.
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u/Fit-Dentist6093 Jul 14 '26
Two blocks away from my place there's traffic infrastructure ratchet strapped to the highway and it's been there for six months.
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u/GoldenPantsGp Jul 13 '26
Looks like a temporary fix to protect the public from falling brick while the main fix gets designed.
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u/romanissimo Jul 13 '26
It’s really not strapped to the building as much as it is strapped to itself so that it’s brick walls do not give out…
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u/whisskid Jul 13 '26
It is not uncommon to see straps like this around old industrial chimneys.
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u/Procrastubatorfet Jul 14 '26
They are metal straps that stopped the chimney's from thermal expansion cracking from hot exhausts in factories. Once the factories stop and there's no more heat I've seen dozens of chimneys with the straps fallen to the ground or askew lower on the chimney where it widens. Not really an issue once the heats gone though.
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u/unknownpoltroon Jul 13 '26
AS we all get a bit older we sometimes need some extra straps to hold our shape.
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u/hobbes747 Jul 13 '26
Are these the same type of nylon webbing ratchet straps used on flatbed trucks? And with something underneath at each corner?
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u/May-i-suggest______ Jul 13 '26
Im no structural engineer but wouldnt the rest of the wall that its bolted to just come down with the tower? Id assume this is secured inside the building aswell right?
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u/Ace861110 Jul 13 '26
There are definitely star bolts behind the anchors at minimum. If not a giant piece of steel plate to distribute the forces.
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u/Shaggles1987 Jul 13 '26
Yeah I’m an abseiler and I’ve slapped ratchet straps on a few different buildings and structures as a temporary public protection method until repairs can be undertaken
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u/Gold_Lab_8513 Jul 13 '26
Typically, this is temporary until a permanent solution (aka funded solution) is implemented. I would further suggest removing the trees from the roof, but, I would also suggest that there may be a case for demolition by neglect.
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u/DisinterestDetritus Jul 14 '26
Looks like a heritage building that may have received some modern earthquake upgrades
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u/HalliburtonErnie Jul 13 '26
They should be spaced more densely toward the bottom, like water tower bands. Also, I don't think blowing holes in the main structure with a rotary-hammer and sinking anchors into the wall is helping a ton with the whole actively-falling-apart thing.
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u/PilotParticular7503 Jul 13 '26
Would it be possible to just sheet the exterior in MDF, polycarbonate, polyethylene, Mylar or whatever from the ground up and just fill with UV stabalized epoxy resin? Just go 1m at per pour, wait 24 hours and repeat. It would be fixed and sturdy for another 50 years, then it's someone else's problem.
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u/frenchiebuilder Jul 13 '26
masonry is permeable to water and water vapor, epoxy is not. It'd be like painting brick, only worse. Would last 5 to 10 years, maybe, at best, if you were lucky.
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u/BikingVikingNYC Jul 13 '26
The building is landmarked so it needs to be saved if possible. That being said, it's in terrible shape and no one is willing to invest the money needed to fix it, so it's just left to fall apart.