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  • Users: Geotechnical76
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  1. Geotechnical76

    Expert Witness

    How someone can become a geotechnical expert witness in the US? Does it require certain registration licenses? Thanks.
  2. Geotechnical76

    Double Sheet Pile Wall/Double Walled Bulkheads

    I am looking for design guidelines and any other related information for Double Sheetpile Wall (Double Walled Bulkheads) systems.The system includes sheetpiles driven like a box and each side is connected to the other with tie rods, or simply two parallel rows of piles of equal lengths connected...
  3. Geotechnical76

    Seepage around pipe piles in embankments

    How do you consider the effect of seepage on the stability of the embankment if you have pipe piles peneterating an embankment? We have an ebmankment nearby a river with piles penetrating the embankment and socketed in rock. We have two cases, rapid drawdon and flood. I understand that when...
  4. Geotechnical76

    Texas

    What is the moisture fluctuation depth in Texas (Dallas Fortworth Area)? I am trying to determine the required cut to eliminate any potential heave in the future. I have fat clay with LL>70%.
  5. Geotechnical76

    DCPT Test

    How accurate is the DCPT test in estimating the CBR and k for pavement design? I understand that it is site dependent since the CBR will be estimated based on the DCPT test results so it will need to be calibrated/correlated based on the practice in that area/site.
  6. Geotechnical76

    Falling Weight Deflectometer

    1-How long does it take to perform each falling weight deflectometer test? 2-Any special requirement for airport testing? Thanks
  7. Geotechnical76

    Tiebacks

    We are designing a wall with sheetpiles and tiebacks (anchored at both ends to sheetpiles). Another feature that is added to the site will be a new concrete bleacher with the bottom of footings about 4 feet from the ground surface. The anchors in the original design are placed about 2 feet from...
  8. Geotechnical76

    Percolation Test

    Hi, Is there any standard procedure for the percolation test? What is the best practice? Thanks.
  9. Geotechnical76

    Open Cell Steel Sheetpiles

    Does any one have experience with the open cell steel sheetpiles with Soldier piles and anchors? I attached a figure that shows the problem. My main questions: 1-What is the min/max required radius to develop the hoop stresses/tensions in the sheetpiles? for example, if we have a straight line...
  10. Geotechnical76

    How do you do the slope stability analysis?

    I would like to check how people do the slope stability analysis for these two cases using slope stability programs, WHEN THERE IS WATER TABLE(if there any consensus). Do you assume the following, if not what do you use? 1-Total stress analysis: Use total strength parameters (...
  11. Geotechnical76

    Sheet Piles in Rock

    I am designing a sheetpile where rock is 45 feet deep. The sheetpile is anchored at a certain distance from the top (above ground water table). The sheetpile analysis indicated that the pile should be extended beyond the soil/rock interface. What is the best practical method to install...
  12. Geotechnical76

    Anchored Sheet Piles

    I am designing an anchored sheetpile for shoreline protection. However, I need to consider ship impacts. Is there any guidelines for such designs? Thanks.
  13. Geotechnical76

    Anchored Sheet Piles

    I am designing an anchored sheetpile for shoreline protection. However, I need to consider ship impacts. Is there any guidelines for such designs? Thanks.
  14. Geotechnical76

    Shoreline protection Restritions

    We are in the process of designing riprap shoreline protection for a river. However, the top bank (arm) of the riprap may not be constructed due to strict limitations that require preventing any tree cuts along the shoreline for bird wildlife protection. The slope at the shoreline is relatively...
  15. Geotechnical76

    Tunnel Book

    I am looking for a good book about tunnels that would have both the mechanical behavior of soil and tunnel and some analysis and design discussions (to help in calculations). It seems it is out there but it is hard to find.
  16. Geotechnical76

    Tunnels

    I am looking for a good book about tunnels that would have both the mechanical behavior of soil and tunnel and some analysis and design discussions (to help in calculations). It seems it is out there but it is hard to find.
  17. Geotechnical76

    Good Books

    I am looking for a good book about tunnels that would have both the mechanical behavior of soil and tunnel and some analysis and design discussions (to help in calculations). It seems it is out there but it is hard to find.
  18. Geotechnical76

    AWWA Requirements

    Does anyone know about AWWA (AMERICAN WATER WORKS ASSOCIATION) requirements for Geotechnical reports.Boring depths, spacings,..etc. Thanks.
  19. Geotechnical76

    close footings

    In order to check the effect of two footings close to each other I used Stuart, J.G. (1962) paper "Interference between foundations with special reference to surface footings in sand.’’ Geotechnique, 12(1),15–23.The same method is described in Das's book. My question is how to estimate the...
  20. Geotechnical76

    Open Source

    Hi, I am looking for an open source code for slope atability analysis. Can anyone help? Thanks.

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