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  1. DRMABZ

    What is passive wedge?

    You will find a reasonable explanation and some drawings that will help illustrate this in most basic geotechnical text books. Look under retaining wall design or earth pressure. Although keep in mind the simple methods, Rankine, Coloumb, etc, involve a idealization of the problem. It is not...
  2. DRMABZ

    Bearing Pressure Question

    There are well used methods for calculating bearing capacity for a footing with horizontal load, including horizontal loads that produce a moment. This is a slightly more complex bearing capacity equation to a foundation under pure vertical loading Essentially the moment reduces the effective...
  3. DRMABZ

    Geo-analysis software

    Sorry I don't have time to reply in detail, however a quick general reply. The units of modulus of subgrade reaction are a little funny. The m^2 relates to area of foundation and the 3rd meter relates to gradient, per meter of penetration. So yes divide by your distance in meters then multiply...
  4. DRMABZ

    Project and client information on a CV

    I think you can always mention the project and your role on it. This is always a nice addition to a CV and it gives some examples to support what you said you did in the x years you worked for this company. I can see how in rare cases the name, location and final client of the project might be a...
  5. DRMABZ

    Geo-analysis software

    Re: plate load tests - Real soil behavior is not often linear over any large range of displacement. Hence why I don't like modulus of subgrade reaction. I think its main popularity is that its simple to include in structural analysis. Analysis in software such as Plaxis will generally be more...
  6. DRMABZ

    Geo-analysis software

    Modulus of subgrade reaction is not a "real parameter" or a intrinsic soil property. It is a load displacement behavior represented as a linear spring. You see typical values in textbooks or you could derive it from in-situ testing. However, as soil behavior is generally non-linear except at...
  7. DRMABZ

    water pipeline

    You should probably also look at cathodic protection from anodes, etc.
  8. DRMABZ

    Geo-analysis software

    As suggested in my reply and that of FixedEarth; this is a big and complex subject. In particular 3D geotechnical FE, as used by Plaxis , is a very complex analysis and a sub-discipline of geotechnics in its own right. Settle is a simpler program then Plaxis, as it only looks at one aspect...
  9. DRMABZ

    Wood Pile Refusal

    Thanks for sharing, interesting picture.
  10. DRMABZ

    Geo-analysis software

    I think a lot depends on the sort of work you are doing and the experience of the people undertaking the work. Broadly speaking I think you can split geotechnical software down into two types. Single problem software, for example slope stability, laterally loaded piles, settlement, etc, and...
  11. DRMABZ

    Rectanuglar Mudmat with hole

    The short answer is; use 3D numerical analysis e.g. FE/FDM. This is the only way to get accurate shape factors for complex shapes not addressed in design codes, it also does the HVM load distribution for you. Having said that 3D FE is time consuming, not everyone has access to it, appropriate...
  12. DRMABZ

    factored and unfactored load

    I think the question is; how are you going to address uncertainty, or in other words safety factors, with respect to allowable settlement. Why not use both approaches? Unfactored soil properties and unfactored loads is your best estimate of actual settlement. This is informative, but is...
  13. DRMABZ

    Searching points within a bounding circle in excel

    Just to add to the very good suggestion. You can rap your distance calculation into an "if" function and have it return 0 or a 1 e.g. =1 if within your distance (circle). You can then use the filter function to produce a list, which if required could be copied into another sheet. The filter...
  14. DRMABZ

    design of trench backfill for subsea pipelines

    A detailed assessment with some calculations is likely to be beneficial, so probably worth getting an appropriately experienced consultant onboard. Anyway some high level thoughts; Some of the following issues may be of importance in designing the backfill, or verify the suitability of local...
  15. DRMABZ

    FLAC

    Hi, Hope the reply is not too late. I've just noticed this thread and thought it worth commenting as you had not received an answer yet. I've not used FLAC for consolidation analysis; but I think I can see your problem based on my experience looking at other types of analysis in FLAC. I think...

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