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  1. Pretty Girl

    Designing the concrete slabs - Eurocode 2

    @HTURKAK Thank you for the response and the book reference. Usually slabs are monolithically connected to beams in buildings, so it satisfies the "prevented lifting from the corners". I believe the simply supported etc is the situation that it can lift from the corners? Or is there any other...
  2. Pretty Girl

    Designing the concrete slabs - Eurocode 2

    I noticed that it's easy to feed the moments to Eurocode equations and get the reinforcement required etc (of course with many checks in between to design it properly). We still need to calculate the moments before we feed it to Eurocode. However, in Eurocode 2, I didn't notice easy method to...
  3. Pretty Girl

    What is this Rm line in this biaxial interaction chart - Eurocode 2

    @EngDM Thank you for the response. So it does have a very good reason to have that line in the charts. Yeah, it'll be useful if someone is following their own rules like 85% max etc.
  4. Pretty Girl

    What is this Rm line in this biaxial interaction chart - Eurocode 2

    @IDS Thank you for the response. I felt like the line is there as guidance, but still felt like there can be a specific use etc. So, the 40% etc is there to check where our applied loads stand compared to maximum failure moment. Is that correct? That is useful when we actually checking the...
  5. Pretty Girl

    What is this Rm line in this biaxial interaction chart - Eurocode 2

    Does anybody know this?
  6. Pretty Girl

    What is this Rm line in this biaxial interaction chart - Eurocode 2

    Yeah, I bought the book from the publisher site. It was popped in a facebook advertisement. I just checked it out and bought. It's a new one it seems. New things are there. It's well structured it seems, however some things are strange in it, which I don't understand. Regarding the calculation...
  7. Pretty Girl

    What is this Rm line in this biaxial interaction chart - Eurocode 2

    This chart is located in the book "Deep Surface" by Harshana Wattage, pg 148, about biaxial N-M interaction in columns. Their chart mentions something like Rm line, but I have seen these kind of lines in other old charts and they call it a different name. Most probably it refers to the same...
  8. Pretty Girl

    N-M interaction chart to Australian Standards

    @IDS Thank you for the response. You're right. the "official sources" as we think they are, might also be wrong, but still my brain says what we did was not Eurocode expects us to do with that 0.00175 limit. The way we did it correct in calculation, so chart is in safe region, but the method...
  9. Pretty Girl

    N-M interaction chart to Australian Standards

    @IDS Thank you for the response. You're right, it makes no sense to compare the old chart of a book if the code is significantly changed. However, how do we both know if yours and mine is correct if we do not compare it to a established chart? Even both of our charts did not fully align with...
  10. Pretty Girl

    N-M interaction chart to Australian Standards

    @IDS thank you for the response and the excel file. However, I need a standard reference though. No need of latest charts, It's ok if the chart is old. Is there any old standard charts. I need official ones.
  11. Pretty Girl

    N-M interaction chart to Australian Standards

    @IDS Hi, is there any standard N-M interaction reference chart for Aus standards (for X axis atleast), so I can compare with mine as we did before for the eurocode chart?
  12. Pretty Girl

    N-M interaction chart to Australian Standards

    Thank you @IDS and @Retrograde . I'll go through those and will get back to you.
  13. Pretty Girl

    N-M interaction chart to Australian Standards

    The below is the N-M interaction chart for Eurocode for a biaxial concrete column. Do Australian standards provide any guidance to come up with the N-M interaction diagram? Which clauses I need to look at if I want to make our chart compliant with AS 3600? I want to know the calculations...
  14. Pretty Girl

    Bi-axial bending chart - concrete column

    @IDS Thank you for the response. I have learned so much through the contributions from you and others in this thread. I believe now it's time to move into something else, but a related one. Will post a new thread for that. Thank you so much 🤩
  15. Pretty Girl

    Bi-axial bending chart - concrete column

    @EngDM Thank you for the response, The problem is, it even might not be a horizontal line at the end in that chart. If it is we can assume they applied a hard cap and rest of the line appeared perfect horizontal line. I believe, we actually did strain compatibility in the mid range up until...
  16. Pretty Girl

    Bi-axial bending chart - concrete column

    @IDS Thank you for the response. ChatGpt says (yeah, it's not a reliable source I know, should not even mention it here), something like we should use N = 0.00175 * x (d/x) , and it says we should consider each r/f bar's pure compression state, that means once NA moves away from the centroid...
  17. Pretty Girl

    Bi-axial bending chart - concrete column

    @IDS Thank you for the response. I posted the same issue on some other websites to get it confirmed. I got some response from one of them saying that's not correct and 6.1 (5) is not applicable to columns. However, I don't get why it isn't related to columns as it's also a compression member.
  18. Pretty Girl

    Bi-axial bending chart - concrete column

    @IDS Thank you for the response. Now it looks way better. But we're just force feeding the 0.00175 and we're over estimating the inbetween points in the pure compression. As I see it automatically skips the fine variations of the actual axial force and just connects with the position where M = 0.
  19. Pretty Girl

    Bi-axial bending chart - concrete column

    @IDS Isn't that just replacing the 0.0035 compressive fibre with 0.00175 and just calculating as normal.
  20. Pretty Girl

    Should there be a dip in my N-M diagram or not - Eurocode - concrete columns

    I created this chart and the members of this forum made a great contribution towards it. My chart aligns well until the pure compression, with the standard chart mentioned at "How to Design ConcreteStructures using Eurocode 2". The problem is, it doesn't align when it enters the pure...

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