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  1. bdbd

    Corrosion of Reinforcement in Construction Joint

    What is keeping the reinforcement in construction joint from corroding? Even if we use waterstops, it's in-between the outer and inner reinforcement, leaving outer reinforcement exposed to the water and other corroding agents in the joint area.
  2. bdbd

    Which Steel Stress for Crack Width Calculation for Multi-Layer Reinforcement?

    Hi! Very short but hard question: When you have more than one layer of reinfoircement on tension face, which steel stress should be used for crack width calculation and can you provide a reference to your answer? A) Outermost reinforcement's stress B) Stress at the centroid of the tensile...
  3. bdbd

    Most Critical M & N Couple for SLS Analyses

    Hi! My problem is, in my opinion, should be very common, but have not seen many posts. I have a shell and with most software, I can get an envelope of results along many load combinations. The structure I am working on is mostly governed by SLS (Crack Width). So, I go in and get the shell...
  4. bdbd

    Neutral Axis with Axial Force and Bending Moment in Cracked Section

    Hi Doug, Your website was the first one I checked, but when I went through your calculation, I noticed that you have used quadratic equations, but I want to go through the steps one by one instead of the quadratic solution. Maybe I cannot understand that. But following the Ghali you referred in...
  5. bdbd

    Neutral Axis with Axial Force and Bending Moment in Cracked Section

    Thanks for that. I am not using anything fancy. Just simple Eurocode. So, instead of yielding the concrete to 0.35%, we should try to reach an equilibrium with the forces, right? I think that's the problem I had.
  6. bdbd

    Neutral Axis with Axial Force and Bending Moment in Cracked Section

    Hi Denial, Thanks for that! I will download and go through the steps you have used. Inhope you also have an SLS check.
  7. bdbd

    Neutral Axis with Axial Force and Bending Moment in Cracked Section

    Hi, Thanks for the answer. I do that for ULS part without any problem. But I need to do similar thing for SLS to get steel stress. Thinking now, I cannot see any difference, but there is some that I cannot remember now :) I think we don't use rectangular block approach for SLS.
  8. bdbd

    Neutral Axis with Axial Force and Bending Moment in Cracked Section

    Do you think that axial force and bending moment changes the neutral axis of a cracked section? If so, can you refer me to the relevant reference? All the reinforced concrete books I have checked uses geometric equivalency and the neutral axis depth is not depending on the axial force and...
  9. bdbd

    Point load on a rectangular plate on spring (Roark-like formulation)

    The easiest way is not the way I am looking, I am looking for the function as you said in the second option. I'll have a look. And without even knowing what I am doing, this out-of-shelf comment is just very interesting. I know how the springs work. Thanks for your concern.
  10. bdbd

    Point load on a rectangular plate on spring (Roark-like formulation)

    Hi, as written on the title, I am looking for a Roark-like case explained in a simple way: "Point load on a rectangular plate on spring." So, the bending and shear calculation for the plate sitting on a soil represented by linear uniform springs.
  11. bdbd

    Bending Moment and Axial Force from Stresses in Soild Elements

    Hi, If you model a member with solid elements, you can get different stress results, such as Syy, Sxy, Sxx etc. depending on the notation used by the software. In a report that I read (by a reputable consultant), they have used these stresses to calculate the bending moment and axial forces...
  12. bdbd

    Boussinesq equation under a rectangular loaded area

    Thanks guys, see the calculation below. https://i.imgur.com/CV8fVFC.png
  13. bdbd

    Illustration for Technical Books

    Hi, I am very obsessed with creating good figures for reports and papers. I see that in some books they have these very well prepared figures, and I just wanted to ask you if any of you know the common softwarw that authors usw? I can't believe if these are simple Autocads.
  14. bdbd

    Assumed bearing capacity in area of miscellaneous fill

    Mostly the recommended bearing capacity for these types of fills is 25 kPa. Also, dont trust plate loadings etc. since the main problem is heterogeneity.
  15. bdbd

    Drained Modulus and Stroud Butler 1975

    Shub_123, although it is not exactly what I am looking for, it is very useful! Thanks!
  16. bdbd

    Drained Modulus and Stroud Butler 1975

    Thank you very much, but the main reason I am looking for a drained modulus correlation is to not use this elastic equation.
  17. bdbd

    Drained Modulus and Stroud Butler 1975

    I do not have the document, but as you said 130Cu is from Stroud for London Clays only. Barnes also quotes Stroud for E' correlations for different PIs.
  18. bdbd

    Drained Modulus and Stroud Butler 1975

    Hi, Does anyone have a copy of the following paper? Actually I am looking logical drained modulus correlations. The elastic theory is not valid to correlate Eu with E', hence Stroud and Butler has some recommendations based on cu for E'. (See Barnes' Soil Mechanics). If you have the paper I...
  19. bdbd

    Looking for English of this system

    Hello, I couldn't find the English translation of this method. Can anyone help me? https://www.youtube.com/watch?v=Oz9iX2QIgyE https://www.youtube.com/watch?v=V5eyvA7KVwk
  20. bdbd

    Temporary cut slope on dense silty material

    Alex, this will always be a problem. Because, even if you make some advanced direct shear tests, triaxials, and you are certain that your parameters are correct, and even you have performed most advanced calculations such as FEM, LEM, DEM or whatever, you may find that slope is unstable. But...

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