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Recent content by pdzeng

  1. pdzeng

    Shear load distribution across group of resin fixed studs in masonry

    Can anyone offer any thoughts on this matter? I need to design a steel beam connection to a masonry wall. I need to connect it via an end plate and I plan to use steel threaded studs fixed using epoxy-based resin into the masonry substrate. As there needs to be a group of studs, I am worried...
  2. pdzeng

    phi angle of clays

    Thanks for your responses. I will have to get a copy of Terzaghi and Peck. I have previously adopted critical strength for design purposes fattdad.
  3. pdzeng

    Frost line depth

    I don't think that we are in a situation where building codes superseded engineering principles just yet. As with anything it is important to justify your decisions, and if this is done then in my experience good sense tends to prevail. However, I have not yet worked on a site where ground...
  4. pdzeng

    phi angle of clays

    That sounds about right to me BigH. In the past I have used 15deg for London Clay (interpreted from plasticity index).
  5. pdzeng

    phi angle of clays

    After doing some more reading around this subject, I understand that drained friction angle can be inferred from subtracting the measured pore pressure from the normal and confining stress components to establish the effective stresses and shear strength can be subsequently computed.
  6. pdzeng

    phi angle of clays

    Thanks for you help Mike. I understand now. How can I interpret the drained friction angle using pore pressure measurements from an undrained test?
  7. pdzeng

    phi angle of clays

    Thanks Jayrod12. I too have been directed towards that sort of value with advice to keep it conservative.
  8. pdzeng

    Frost line depth

    In the UK the maximum frost depth is generally considered to be 0.45m below the surface. This was based on data gathered from some very cold winters towards the mid-to-late 19th century and the frost line hardly ever reaches that depth in practise. Typically UK building codes specify that...
  9. pdzeng

    phi angle of clays

    I am working on a project where I need to determine the phi angle of an overconsolidated clay for retaining wall design. I have been informed by colleagues that the best way is to infer this data is from correlations with PI and that triaxial testing on clays typically yields phi angles of...
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