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  1. RockChick

    pipeline and manholes - best geotech lab testing

    Thanks all, I should have clarified a couple things - 1) not my first endeavor, I have responsible charge to design geotechnical investigations, but I don't always decide on the lab testing suite. So I was trying to ask what lab tests, on relatively undisturbed samples, will yield the numbers...
  2. RockChick

    pipeline and manholes - best geotech lab testing

    Hi all, I'm a geologist assigning lab tests for Mod Cal and SPT samples for a sewer trunk replacement project. My GE will review the suite I choose but I'd like to take a good crack at it. What are the most meaningful tests to assign for this type of study? It will involve manholes, trenching...
  3. RockChick

    Permeability calculations for a bore pit

    oh geez, i'm reviewing my hydrology text book and I think i can just solve for Q knowing the level of the GW table and the bottom of the pit we need to lower the water level to...
  4. RockChick

    Permeability calculations for a bore pit

    Still working on recommendations for the project mentioned in my last thread which will involve a bore pit and a receving pit that will have significant dewatering needs. We performed both pump and slug testing and have very different K conditions between the pits due to different geologic...
  5. RockChick

    jack & bore in alluvium

    thanks. i will look into that! would have to find out how disruptive the hammer blows would be to the alluvium standing in the banks.
  6. RockChick

    jack & bore in alluvium

    Also, the bore path is below the water table, it is an active creek. So I don't know if things like chemical grouting would work.
  7. RockChick

    jack & bore in alluvium

    I am doing the geotech for a water/sanitation agency project involving a jack and bore of a new main sewer line under a creek. its a narrow channel but their planned bore path has only 8 feet of planned cover which will still be within the modern alluvium at the center of the channel. are...

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