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Recent content by Blairsy

  1. Blairsy

    Organic "Fines"

    Just curious, is it realistically possible to have organic particles that are finer then the No. 200 sieve? If one were to run a minus 200 wash sieve on a sample of predominately fine sand with apparent organic particles that are also quite fine, could someone make the case that some of those...
  2. Blairsy

    Any Engineering Geologists in the house?

    Sound like you've had quite the career f-d! I'm looking into some universities that offer geotechnical master's programs but that also allow to you take several electives in the geo-science fields. Thanks for sharing a bit of your story!
  3. Blairsy

    silts vs. clays

    OP - The article I linked to below pretty much sums up what the others have said. https://fl-nzgs-media.s3.amazonaws.com/uploads/2017/11/NZGS_Symposium_20_Hind1.pdf
  4. Blairsy

    Any Engineering Geologists in the house?

    MTNClimber - I appreciate the genuine response and will definitely consider my decision carefully. I do my best to understand the local geology here in the Northeast given the available resources. As you mentioned, it pales in complexity to other areas of the world - especially in terms of...
  5. Blairsy

    Any Engineering Geologists in the house?

    Are there any geotechnical engineers here who also practice (or have practiced) as an "engineering geologist" or geologist? If so, how did it affect your professional career? I have a master's degree in geotechnical engineering but I am just as equally interested in geology, hydrogeology, etc...
  6. Blairsy

    Excavation and Replacement of Non-Engineered Fill - Contract Question

    Ron - That certainly seems like a good and fair approach for all parties and I would prefer to see more projects I work on done that way. One question though; how do you go about verifying the quanities/volumes that are actually dealt with during construction? For overexcavation or rock...
  7. Blairsy

    Excavation and Replacement of Non-Engineered Fill - Contract Question

    I appreciate everyone’s advice and 100% agree with Ron. I have seen a few cases where the fill has been there for so long and is denser than the actual native soils beneath it. But the position many engineers I know take is that you cannot explore every square foot of a site, and if you know...
  8. Blairsy

    Excavation and Replacement of Non-Engineered Fill - Contract Question

    GeoEnvGuy, I agree with you. If the engineer drills 10 borings in the footprint of a proposed building and unsuitable bearing soils requiring overexcavation are encountered in each boring to variable dpeths, in my opinion it should not be the contractors responsibility to interpret the...
  9. Blairsy

    Excavation and Replacement of Non-Engineered Fill - Contract Question

    Is it not understood that since the terms are lump sum, and no unit price is provided for over-excavation, that the contractor should be making his own estimate based on the boring and test pit logs (which show undocumented fill depths and elevations at those locations) and including that in his...
  10. Blairsy

    Excavation and Replacement of Non-Engineered Fill - Contract Question

    I practice in an area where there a few native sites being developed. Most sites are covered with a decent thickness of non-engineered fill ranging from practically trash to soils that require an experienced eye to discern whether it is made ground or not. Since such materials are "undocumented"...
  11. Blairsy

    Folder structure for geotech topics, manuals, research papers, etc.

    Thank you all for your suggestions. I'm a bit of an organizational freak and the fact that many geotechnical topics overlap does not help. I'll slowly chip away it and see where I get. Thanks again!
  12. Blairsy

    Folder structure for geotech topics, manuals, research papers, etc.

    I've accumulated a lot of PDFs over the years (research papers, field manuals, design manuals, etc.) related to various topics in geotechnical engineering such as soil and rock mechanics, shallow and deep foundation design, slope stability, and ground improvement, to name a few. I started saving...
  13. Blairsy

    Grouted Riprap Design for Dams and Revetments

    cvg - Thank you for the input and references. I think you answered my question.
  14. Blairsy

    Grouted Riprap Design for Dams and Revetments

    Hopefully I am posting in the correct location. Is anyone familiar with design of grouted riprap for dam spillways or revetments based on expected overtopping flow velocities? I am trying to determine if there would be a considerable reduction in stone size and layer thickness between loose...

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