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https://www.researchgate.net/figure/Measured-Poissons-ratio-of-Bonny-silt-versus-a-degree-of-saturation-and-b-matric_fig4_344811412 In this research they test a silt at various water contents and poissons ratio is always positive. So that suggests that idea is out. A negative ratio doesn't...

The Vp to Vs ratio suggests the top 10m is extremely dry interestingly, wonder if it's an unsaturated soil mechanics thing? Vp in soil is very dependent on the degree of saturation / water content right? Wonder if its an unsaturated soil mechanics thing. Although I'm not sure you expect a dry...

Is there any reason to suspect you might have say, repeated layers of buried material that might have a negative Poisson's ratio? Wood maybe? That's about the only thing I could think of. Did you muck up the calculation and end up with a negative instead of a positive? Share a bit of the data...

More than one contractor has threatened to put a hit out on me...we all have to live in the real world, where contractors and managers in most regions are usually up to their neck in gang activity or some other form of criminality. Such is life. Shit in Quebec you still might get cast into a...

>This is a good point, has anyone ever witnessed a situation of being ‘threatened’ through disagreement with leadership teams (on a technical/quality front)? Very frequently.

What does the original design say about requirements for burial of blocks? I thought usually even the manufacturers want a few courses of these things buried.

JAE, The regulatory environment you are familiar with essentially only applies to the civil sphere, and even then mainly only to structural engineers and as lip service in the other civil disciplines. I would digress slightly from the number CWB quoted because I believe that the 'civil sphere'...

Also if you can find an English-speaking French engineer they might be able to answer without hte original paper - the symbols / terms in the formulae might be standard French ones? I've noticed in English translations of French design manuals they do seem to use different symbols than the...

Martin, D., 1966. Étude à la rupture de différents ancrages sollicitées verticalement. Thèse de Docteur-Ingénieur, Université de Grenoble This one? Not that I can read French but 'These' sounds like it's a PHD Thesis...you might be able to jump through alot of hoops to get a copy if you...

Engineering consulting is setup for a meta-level death spiral to the bottom that rewards and promotes useful idiots who blindly sign off on low quality work with less and less calculations and lower and lower quality until someone gets killed. I frequently come across engineering manuals...

Well, they could have submitted a carefully selected sample for testing or be lying about the results, is one possibility. Contractors aren't exactly known for their honest, legal above board behaviour.

I swear I've seen this same thread posted 20 times now and they keep disappearing

I don't know of any. I have only heard of geotechs using Plaxis / Rocscience / Optum / Diana for FE modeling.

It depends where you are, some areas will just accept the contractors sign off on capacities, others no. Depends on the municipal / local government / consenting authority.

Imagine if you had all the engineering designs and reports from some British consultancy around since the 1800s or a big American firm like AECOM or Jacobs or Fluor over their whole history, and you just set out to train an AI on explicitly that data. Current models are not really trained on...

Completely speculation on my part but this thread was interesting: https://bentleysystems.service-now.com/community?id=community_question&sys_id=e5c5a6321b55ce90f3fc5287624bcbee Plaxis uses 0.5 as a default for undrained but apparently used to use 1 and had to change it because people were...

I suppose this is one of those cases where you have to define the word in a specific context. In the general context, PE is a possible indicator / positively correlated with competence but frankly there are a fair number of absolutely fucking useless cunts licensed with various professional...

Although, the Virginia Tech (page 2) compendium references a paper by Farrar which talks about a 1 % correction for every 10 feet of rods. And suggests things got a bit unreliable at ~60m. (https://ntlrepository.blob.core.windows.net/lib/7000/7500/7519/farrar.PDF) Virginia Tech SPT manual...

I know what you're saying, although supposedly beyond ~15m it makes no difference (they are 'short rod' corrections after all). In typical geotechnical fashion, there is also a school of thought that rod corrections are overblown / nonsense (refer section 5.5 of the Overburden Stress...

For k0, either 1-sin(phi) or maybe generic published values for the soil type. Or if you know or measure in-situ horizontal and vertical effective stress, it's just the ratio. Poissons ratio is horizontal strain / vertical strain so not the same as K, one is about stresses and one is about...