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Recent content by JSco25

  1. JSco25

    Settlement of a culvert supporting railway

    I am looking at the settlement design associated with a railway passing over 4 box culverts (which allows a river to pass beneath), the box culverts are precast concrete lifted in to position. The ground make up is both granular and cohesive therefore I have looked at both the immediate...
  2. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    Hello BigH, Sorry for my delay in responding. Thank you for raising another interesting method. I have tracked down a copy of the book you recommend and so I will have read. many thanks,
  3. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    Hi SlideRuleEra, Yes, I agree. That is my major reservation about using that theory is that it was developed for plane-strain conditions. I have also found subsequent shaft studies which highlight the soil arching effect which can occur. This results in lower lateral earth pressure...
  4. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    And seismic calculation.http://files.engineering.com/getfile.aspx?folder=08d8aecd-9841-4be5-bc4a-738c00466ac8&file=Wood_and_Elms_1990.PNG
  5. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    Hello everyone, Thank you for the replies and discussion so far. I will provide a bit more information - I didn't want the original post to be excessively long but cut out some essential info. The diaphragm wall is a standard bentonite slurry wall construction, reinforced and then tremmied...
  6. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    Hi ATSE, Thanks for the response. The ground profile is: 0mBGL - 2mBGL - Made Fill (phi = 32, c' = 1kPa, gamma = 15.0kN/m3) 2mBGL - 7.5mBGL - Volcanic Tuff (clayey sand) (phi = 35, c' = 2kPa, gamma = 17.0kN/m3); 7.5mBGL - 15mBGL - Clay (phi = 30, cu = 34kPa, gamma = 17.0kN/m3) 15.0mBGL -...
  7. JSco25

    Lateral Earth Pressures on a Deep Rigid Shaft

    Hello, The problem: I have a 40m deep shaft which has an internal diameter of 28m. The proposed construction method is to construct an external diaphragm wall and then excavate internally, to then install an internal pre-cast concrete liner. Diaphragm wall is 1.2m thick, liner is 1m. My...
  8. JSco25

    Steel Reinforced Concrete Pile Design

    Hello, So I am designing a steel reinforced concrete pile which will not work in the usual sense of having a vertical load applied, but to stabilise a slope, therefore subjected to lateral loading due to the failed slope circle. My question however lies with the structural design of the pile...
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