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Recent content by 4n6

  1. 4n6

    Pile and Lagging Walls

    Focht & GPave, Thanks for the input. I agree with your comments. We will not be providing a design for this wall at this time - only providing rough feasability info to the client. As such we are just trying to get a grip on some ball park costs that might be associated with this structure...
  2. 4n6

    Pile and Lagging Walls

    I am looking for any references for the design of pile and lagging walls. We are doing preliminary estimating for a project that involves a cut retaining wall to support poor quality native limestone (RQD = 0 -5). The cut structure will be just a few feet of of the property line, thus our...
  3. 4n6

    Engineering Properties based on RQD

    jdmm, Thanks for the info. To clarify -the retained limestone in question is undisturbed and in place. We will be using a crushed rock backfill for the reinforced zone. I am designing with a phi = 34 for the crushed rock zone. Would I be okay, based on the parameters described in the first...
  4. 4n6

    Soil Properties from RQD?

    I am designing a short (6' and less) Reinforced Earth wall in a cut situation. The reinforced fill will be crushed stone to minimize the reinforceing embedment length. The retained material is a poor quality limestone, with an RQD (Rock Quality Designation) of 8 to 25. A Texas Cone...
  5. 4n6

    Engineering Properties based on RQD

    I am designing an short (6' or less) MSE type wall in a cut situation. The retained material is a poor quality limestone. The RQD (Rock quality designation) ranges from 8-17. A texas cone penetrometer advanced 0" at 100 blows in most areas. Can any one recommend a phi angle that...
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