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  1. marchieV

    RPad

    Hi All, I would like to know if there is a rule of thumb when there is a need to start using reinforcing pad for certain sizes of reducing tee (weld type). Thank you. Regards, marchieV
  2. marchieV

    RPAd Dimensions

    Hi LittleInch, Thanks for the response. I'm just wondering about the basis of the formula.
  3. marchieV

    RPAd Dimensions

    Hi All, I'd like to know if there is a documented code, standard, or reference that I can use as a basis for the following formula that I found on the internet for calculating the dimensions of the reinforcing pad: 𝐿1=d+10𝑚𝑚 𝐿2=2d 𝑤=(𝐿2−𝐿1)/2 𝐶1= 𝐷_ℎ sin^(−1)⁡(d/𝐷 )(𝜋/180)+10𝑚𝑚 𝐶2=𝐶1+2𝑤 See...
  4. marchieV

    Cap Screw

    Hi TugboatEng, Thank you for or insight. Do you know what the recommended gap between the ends of the two screws is? or a reference that specifies a recommended gap?
  5. marchieV

    Cap Screw

    Hi GBTorpenhow, Thank you for your response. Do you know what the recommended gap between the ends of the two screws is? or a reference that specifies a recommended gap?
  6. marchieV

    Cap Screw

    Hello, everyone. I'd like to ask a question about the cap screw that will be utilized on both faces of a lug type butterfly valve. How can I calculate the length of the cap screw? Do I need to provide a space between the two (2) cap screws on both sides of the butterfly valve? Do we have any...
  7. marchieV

    Anchor Thrust for Underground

    Littleinch, Why I need to remove the anchor? Eventhough the design has thrust anchor?
  8. marchieV

    Thrust Anchor

    Do we need to input manually the Full Thrust Anchor for underground Piping as "Restraint: Anchor" (after converting original CAESAR II file into a buried file)? Regards, Marchie
  9. marchieV

    Anchor Thrust for Underground

    Do we need to input manually the Full Thrust Anchor for underground Piping as "Restraint: Anchor" (after converting original CAESAR II file into a buried file)? Regards, Marchie
  10. marchieV

    ASME B31.8

    Most of the cases with zero allowable are Operating Conditions (OPE+Win/Occ etc). I read other forum/thread, it seems its not a wrong input and not new situation. I don't know what should I do.
  11. marchieV

    ASME B31.8

    Please see attachment for the code stress report. You will see that most of the OPE cases has zero allowable stress. Is it possible that if the system I am analyzing do not involve a very long pipeline, we can use ASME B31.3 instead of ASME B31.8? From scapper laucher until the underground...
  12. marchieV

    ASME B31.8

    I am analyzing a pipeline using ASME B31.8 of CAESAR II ver. 7 but I notice that some allowable are zero in the Output Report. How is that happened? I know about the par. 833.1 for the Restrained and Unrestrained but is that possible that the allowable will be zero?
  13. marchieV

    Wind Load for ASME B31 8

    There are some parts that are buried and some are abovegroud and it is connected to scraper laucher and receiver. In the flexibility analysis specification of the client, it states that only pipe 10meyer above the ground is considered for wind load. Does it mean that the wind load consideration...
  14. marchieV

    Wind Load for ASME B31 8

    Hello. I just want to ask regarding the wind load for pipeline under ASME B31.8. Do we need to consider or subject the Stress Analysis of pipeline for Wind Load? It was not stated in the code if the wind should be considered. What is the reason? Thank you Regards, Marchie
  15. marchieV

    Reciprocating Compressor

    Hello. Can I use the Modal Analysis Type under Dynamic Analysis of CAESAR II Program in checking the natural frequency of piping requirements of 4Hz connected in a reciprocating compressor? Thank you. Regards, March
  16. marchieV

    Reciprocating Compressor

    Hello. Can I use the Modal Analysis Type under Dynamic Analysis in checking the natural frequency of piping requirements of 4Hz connected in a reciprocating compressor? Thank you. Regards, March
  17. marchieV

    Flange Leak Analysis

    Do you usually consider the design temperature in the flange leak analysis using Pressure Equivalent? Or only operating temperature? Regards, Marco
  18. marchieV

    PSV Closed Discharge

    Actually it is a revamp pipeline and in the existing condition the line has spring support on both upstream and downstream of the PSV. I was wondering if in the previous analysis they considered the reaction force because how did they pass the stress analysis without using guide or clamp on the...
  19. marchieV

    PSV Closed Discharge

    Thank you for sharing. I read that also and they do not directly tell that it is not considered. Maybe because it is very rigorous to perform and I read also from other references that in order to get an accurate reaction force time-history is required. It was also mentioned in ASME B31.1...
  20. marchieV

    PSV Closed Discharge

    Where do we impose the reaction force? How do we compute the reaction force since it has a leg or several elbows and the orientation at the discharge is different from the open discharge?

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