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Does anyone know how many different soil classification systems for geotechnical engineering are out there that could possibly be used? Does anyone know if there is a list out there?

I am curious as to whether anyone has seen any documentation or testing which indicates what temperature soil can be air-dried prior to placing and recompacting. In my experience in New England, it can only be done in Summer months (> 60 deg. F). I know there are lots of other factors (i.e...

Thanks for all of your input. It is nice to see that many of you have the same experience that I have.

I have a project where standard yellow pine timber lagging was used for a temporary soldier pile and lagging wall. Lagging is untreated. The owner would like the lagging removed as they are worried about voids developing long-term. It has always been my understanding that timber lagging will...