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About ReinisGailitis

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    Fellow Member
  • Birthday 09/25/89

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    Riga, Latvia
  • Occupation
    Civil Engineer
  • Expert in
    Concrete Structures
  1. Hello I think that you should use traffic loads if the loads provided for access ways for buildings are too small for your application. Cheers
  2. Hallo. Have you checked the Green Book on simple connections by SCI (P358 if I remember correctly)? Cheers
  3. Hallo. We either use CPT results directly with D.7. annex of EN 1997-2 to calculate the resistance of a pile and then check settlement with characteristic loads with elastic space method. Another way is we draw the CPT result diagrams from all bores next to each other and then superimpose them on onto another to visually inspect and decide on the "mean" values for all "layers". These mean values then are used with the D.7. annex. Best of luck!
  4. Hallo. In general shear walls are design using strut-and-tie models. This allows a way to design for both shear and longitudinal stresses. Cheers
  5. Hallo. What is that you want to calculate? The uniform component of the temperature variation? Cheers
  6. In simple words, EHF's represent a percentage of all loads on a particular floor, so they are proportionate to the individual load types on that floor. For examples, on one floor you have a dead load, superimposed load and imposed load. Each of these loads has their own partial factors. When you've derived design dead loads, superimposed loads and imposed loads you just multiply each of these loads on the particular floor but the respective percentage and you arrive at your EHF's, which represent the sum of the previously mentioned components. Hope I"ve made myself clear enough, Reinis
  7. Hallo. A sketch of the current situation would go a long way. Anyhow, don't hope for definitive answers to your question as they're something we all are earning our living for. Cheers
  8. cohesive soil

    Check out the book: "Single Piles and Pile Groups Under Lateral Loading". I haven't used it myself but from what I understand the best method for practical design of laterally loaded piles using spreadsheet etc is "p-y" method in the book mentioned above (it is called the same in many other books as well). Best of luck, Reinis
  9. Hallo. You can if the basement foundations slab is thick enough so that you can assume it to be rigid, which in general you cannot do, as usually foundations slabs are not that thick. If they were thick enough to be classified as rigid they wouldn't be economic. Anyway, a design of foundations slabs is a complex process and one must have some experience in design of such foundations to achieve safe and economic result which will yield good in-service performance. Best of luck, Reinis
  10. cohesive soil

    The force you're interested in getting the deflections for. Yes, if the moments is applied to the individual pile you should take it as the H=moment/eccentricity + usual H. If you need to know deflection under ULS loads you use those loads, if you need to know under characteristic combination then you take those. P.S. Broms method is an estimate, far from the most reliable/precise, so be aware. Cheers
  11. What do you mean by restraints? Are you using elastic or plastic (non-linear) analysis?
  12. Hallo. Check out for a lot of good information and many freely available SCI publications. Good luck!
  13. cohesive soil

    Hallo. Eurocode has two methods for design of axially loaded piles (EN 1997-2 annex D.6 and D.7). These will not provide you directly with the adhesion factor alpha you're looking for, but may help you with the design. If you want to find the adhesion factor alpha refer to good literature for pile design. For now, I can tell you only that the factor does vary, usually from 0,25 upward, but it depends on many things, so again, refer to good literature. You may start with books from Tomlinson. Cheers
  14. Hallo. In my opinion, you shouldn't be using some random design spreadsheet if you don't know how to do the calculations manually, and if you do - make your own spreadsheet, as this is the only way you'll be 100% sure of what you're getting. At least this is the only way I design. I almost never use any random spreadsheets. I also don't design structures or elements I don't know how to design/calculate. Find some design examples on the internet, if you can, or purchase good books on piles design and go on from there, learning how to design axially loaded piles. For methods of axial pile capacity calculations as per Eurocode refer to EN 1997-2 annexes D.6 and D.7. Annex D.7 is what we prefer here as it is a direct calculation method based on CPT test results, which is what we ask for when we're assuming that we're going to design deep foundations. Annex D.6 provides a simpler method for design which is a simplification of the one used extensively in Germany (this method is totally empirical). Cheers
  15. I suppose so, as I haven't designed such a wall either. Check it out and report back! Cheers