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  • Users: mfio
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  1. mfio

    Drilled Shafts socketed into bedrock

    Thank you very much for your response and advise.
  2. mfio

    Drilled Shafts socketed into bedrock

    Thank you to all for your replies.
  3. mfio

    Drilled Shafts socketed into bedrock

    Sorry, probably my post was not clear. The problem is: - 3 feet diameter drilled shaft socketed 5 to 10 feet into bedrock - shaft has to resist an uplift force of approximately 200 kips - subsurface conditions consist of approximately 8 to 13 feet overburden loose soil over bedrock. Groundwater...
  4. mfio

    Drilled Shafts socketed into bedrock

    Anyone has any experience with resistances to uplift forces of drilled shafts socketed into bedrock. How much critical is to consider rock mass uplift failure for a 3 feet diameter shaft with 8 to 10 feet of overburden soils? Typically I analyze for both rock/concrete socket length bond, and...
  5. mfio

    Asphalt Millings

    An existing parking lot has been milled and the asphalt millings are stockpiled. I was planning to reuse the asphalt milling as a portion of the subbase course materila beneath a new asphalt pavement. The question is: should the millings (max 4" in thickness) should be placed just below the new...
  6. mfio

    CFA Piles

    Thanks for your help. I have an internal discussion with one of my coworker. Section 6.3.2F of FHA Geotech Circular #8, states that "lateral analyses may only be needed if lateral loads are significant. As a guide, lateral shear forces on vertical piles that are less than about 2 to 5 kips per...
  7. mfio

    CFA Piles

    Hello, just for my own information, I am trying to learn more about CFA. Is there any minimum requirements for depth of reinforcing cage for 16" diameter CFA piles approximately 35 feet long? Assuming lateral analyses are not performed because of small lateral loads (according to Section...
  8. mfio

    Foundations on coal

    Hello, I was wondering if anybody has any information about building in coal zone area. Our subsurface investigation indicate weathered rock to 40 feet and a coal seam between 40 and 50 feet and rock again. No indications of voids left by possible past mining activities. We will be building a 3...

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