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Hi, I am running ASME B31.3 std CAESARII pipe stress analysis. The stress team is using and adding an SIF=4 at pipe anchors, 3-ways or a single axial support, to reserve enough capacity at the attachment point to qualify a lug at Y-3000 (ASME III Div 1). Worked on multiple projects and this...

Thank you axle. Missed that post while I was searching. I will study the post and case carefully. My previous project was nuclear and we basically took the conservative approach and never considered liberal Stress B31.3 eq.1b. We based all our results on B31.3 eq. 1a No exception. I will let...

Yes T3-T1 expansion case is possible. This is not an occasional case though. Does it depend on how many days or cycles it will go through it vs Normal case? I inherited the system that was originally justified based on Fatigue rather than trying to make it work around the condition instead of...

Hi, I read multiple threads about Thermal Stress Range SA ASME B31.3 Eq. 1a and 1b. I also understand that: For ASME B31.3 the failure mechanism for secondary load (temperature) is fatigue. For primary (W, P) is yielding. My question is specific: I am having a piping analysis utilizing...

Hi, What is the main difference between PVC ASTM D1784 and D1785 related to PVC "Flanges" Class150 Sch. 80 ASME Drilling, "Ball Valve", "Y-TYPE Strainer". As related to ASME B31.3 Table A326.1 Listed & Unlisted components. The parts are designed and ordered through the Process Dept. and the...

Understood. Thank you for the replies and clarification.

You may see my question posted twice since I had it in the wrong subject category. So hopefully I will receive a much friendlier reply. My co-worker and I have performed an FEA analysis on a nozzle on a straight pipe using different pressure and temperature load conditions. I also do a lot of...

Thank you so much. I had an old photocopy of B31.4, so I searched for an updated copy and I found the information I was looking for and concur to your answer above.

cingold, Sorry to go back and forth. What I am trying to find is where in B31.4 does it specifically state: Restrained Pipe: 0.9 Sy I could see the design factor 0.9 Sy, but I can't find where it defines it for restrained pipes vs unstrained pipes as you stated above. Thanks,

That is why I am confused. I am basically looking where is the formula located because it shows in these two code refernces and I can' seem to find it.

Here you are. Sorryhttp://files.engineering.com/getfile.aspx?folder=4d1fe898-52e3-4449-b471-3142415a55d6&file=API_Specification.pdf

Could view the attachment. The highlighted section. I couldn't find even there? Thanks

cingold (Mechanical)/ Could you please let me know which piping code and where is the formula below located in the code: St=0.9Sy for retrained pipe Thanks

Clear. Thank you again for the replys and answers.

Thank you all for your answers. I don't want to bore you further on this topic. I just have a few couple of questions to your responses: Latexman, Attachment very nice. See the marked up attachment and please confirm, when I print your pdf file and measure your dimensions, they come up short...

Hi, I feel I should know how to read a logarithmic graph but I seem to have been wrong all along and I need someone to correct me. I am taking the PE exam in HVAC soon. I have been going over the refrigeration cycle problems in a reference book I have. Whenever I measure the pressure of the...

Thank you,

I am changing my PE exam module to HVAC. I will have to buy at least the ASHRAE Fundementals handbook. Do I need to buy the other ASHRAE Hanbooks and bring into the exam. Can you list a must have books without having to spend a lot money.