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  • Users: MramJ
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  1. MramJ

    Frost heave

    GW table is at 1.3 m, and frost depth is about 1.5 m. Also, this material is Fill (not native) primarily silt and may contain trace to some roots/organics. I just need an idea of an upper bound or a very conservative estimate based on the hydrometer, moisture content, frost depth, and GW level...
  2. MramJ

    Frost heave

    The client cannot remove the frost susceptible soils and considering a compressible expanded polystyrene fill forms, so they need the estimated amount of frost heave.
  3. MramJ

    Frost heave

    Hello everyone, I am looking for a way to estimate frost heave of soils without specialized laboratory testing or investigation. I have frost depth, hydrometer results (showing 54% silts), and moisture content. Is there a straightforward way to obtain a reasonably acceptable estimate with a...
  4. MramJ

    Upper limit for soils' bearing capacity (ULS)

    Hi everyone, I have a geotechnical report that provided an Ultimate Limit State (ULS) bearing capacity of 2000 kPa for silty sand soils with N-values greater than 50 (reaching about 70 blows per 0.3 m). My question is: Is there an upper limit to the ULS value where a geotech would not consider...
  5. MramJ

    Settlement vs Foundation Size

    Thank everyone, and sorry for wasting your time on this. I am not really a Geotechnical engineer, but work with few and I am trying to understand how things work in the geotech world. I agree with CarlB, I believe there is a typo in this equation, but I don't access to the CFEM to confirm, as I...
  6. MramJ

    Settlement vs Foundation Size

    Hey everyone, In the CFEM, there is an equation by Burland and Burbidge (1985) for foundations on normally consolidated coarse-grained soils: \[ S = B^{0.75} \times \frac{1.6}{N_{60}^{1.4} \times q} \] I believe that this equation is based on observed data, but there are a couple of things I'm...
  7. MramJ

    ULS and SLS

    Could someone please explain how to evaluate bearing capacity using ULS? (I'm in Canada, if that makes a difference.) I have tried finding answers and reading reports, but I never clearly understand how ULS and SLS are calculated. 1) Is ULS a factored ultimate bearing capacity? If so, why do...

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