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  • Users: kos1
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  1. kos1

    Deflection on Fall Arrestor L/120 or L/180?

    Hey guys, Im designing a fall arrestor system and wondering what value you would use for deflection? Do you go with L/120 or L/180?
  2. kos1

    Combine Tension and Shear in Bearing-type Connection

    Hey guys, I am trying to calculate and check the design strength of plate bolt connection. So to do this i am following J3-2 of the AISC code book. The part that i got stock and hopping someone here can explain to me is how to calculate the Frv in J3-3B equation. I have 4.5kip shear force and...
  3. kos1

    Prograssive Sampling for Examination for Pressure piping B31.1 (power)

    Hey guys, I need clarification on this, Should you do progressive sampling for examination on B31.1 piping even though there is nothing mentioned on the B31.1 code?
  4. kos1

    Wait time between weld and NDT on boiler pipe (B31.1) 2-3days?

    Can anyone please help clarify whether it's necessary to wait 2-3 days after welding the pipe before conducting any Non-Destructive Testing (NDT)? The situation involves a replacement pipe in a boiler, designed according to ASME B31.1 standards. My senior colleague mentioned the requirement to...
  5. kos1

    Vibrational analysis on Rectangular tank

    These are UN 31A/Y IBC tanks. They are designed to transport fuel from site to site and hence the need to be tested with water. They are designed as per CGSB 43-146 (Canada) & DOT 49 CFR 178 in the USA. The vibration testing is mandatory as per the code.
  6. kos1

    Vibrational analysis on Rectangular tank

    Hi @ThomasH, @dhengr As I have mentioned multiple times, they all rejected citing because the tank is too big. NTS was one of the first ones I reached out to because of its 50+ years of experience. Im thinking of loading the model into Autodesk Nastran and using its Vibration analysis tool and...
  7. kos1

    Vibrational analysis on Rectangular tank

    Hello @271828, I suspect the reason is that the tanks need to be fully loaded with water as part of the test, and no facility has a test bed strong enough to take that load (Gross Mass for Tank 1 = 6150kg). If you know any facility that can do the test for this size/load, please forward it to...
  8. kos1

    Vibrational analysis on Rectangular tank

    Hello @centodollar Thank you for the replay and suggestion. If you know of any facility that can accommodate such a large tank, (Note that it will need to be filled to 95% for the test). Please let me know.
  9. kos1

    Vibrational analysis on Rectangular tank

    Hello everyone, I am seeking your assistance once again for a unique challenge I currently face. I have two rectangular tanks: Tank 1: Dimensions - 60in H x 90in L x 88in W Tank 2: Dimensions - 63in H x 90in L x 58in W My goal is to obtain certification for both tanks according to the UN...
  10. kos1

    Tipping force for Tank Stand

    In reality this is how the tank would be tipped over: This is what i think the calculation would look like, but not 100% confident:
  11. kos1

    Tipping force for Tank Stand

    Hello good people of Eng-tips, I need your help with a unique problem I have encountered. I am designing a tank stand for our shop and I need to calculate how much force would be needed to push the tank over the stand. See attached picture for reference, I can provide additional dims if...
  12. kos1

    Bending stress on horizontal pressure vessel saddle wear plate

    Thanks for reply JStephen, I did read that definitions and followed the calculation, but the number im getting it seems too high. I thought there might be a different approach to it, hence the reason for posting it here. Here is the equation i have derived based on my understanding...
  13. kos1

    Bending stress on horizontal pressure vessel saddle wear plate

    Does anyone knows the equation to Bending stress on wear plate on horizontal pressure tank? I am trying to analyze the loads on saddle using Pressure Vessel Design Manual by Dennis Moss. He gave details on all the saddle parts, but didn't include anything on the wear plates. Any tips or...
  14. kos1

    Eng-Tips Salary Survey

    i was making same when i was at your level of experience in Alberta.
  15. kos1

    Saddle Analysis on Horizontal Flat head tank using Zick's method

    @HTURKAK, Thanks for the confirmation. This snap is directly from the Zick's papaer @JStephen, if the tank has two saddles only, one of the assumption Zick makes on his paper is to treat the tank as beam. His numbers are bit on the conservative side, his method of analysis has become industry...
  16. kos1

    Saddle Analysis on Horizontal Flat head tank using Zick's method

    This might be turned out to be a silly question, but I could not find any reference anywhere. Im trying to calculate the Bending Moment at the saddle of flat head horizontal tank using Zick's analysis. In his bending moment equation, he has value called 'H', he defined it as the depth of the...
  17. kos1

    Anchor Loads

    @HTURKAK, thanks for the link. Information on those section you mentioned, were very informative. Unfortunately they are for the US, do you know if something like this exist for Canada? I have reviewed both Building Code and the Fire code book, nothing similar exist.
  18. kos1

    Anchor Loads

    I do have an Aerospace Engineering Degree. But my area of practice is pressure vessel and sheet metal design and fabrication. I have not solved these type problem and that is why im struggling. The part im struggling is understanding the overarching principle here, I can solve the math if i know...
  19. kos1

    Anchor Loads

    @human909 I am a Design Engineer. @le99 Yes, you are correct. I have those value already calculated. I need to find the individual load at each anchor points. @dik Yes, the equipment is on a skid. However, only those 6 plates that are attached at under the skid gets bolted to the concrete...
  20. kos1

    Anchor Loads

    Hi guys, I need help with calculating anchor loads per anchor connection point. I have Calculated the total Seismic load and the wind load using NBCC (National Building code of Canada). I can't figure out how to distribute this load over the anchor points. Attached is picture of the anchor...

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