Section VIII Div 1 versus Div II
Section VIII Div 1 versus Div II
(OP)
Hi Guys,
What is the difference between Section VIII div 1 and Div 2? Also, what is the differnce between allowable stress value "S" and design stress intensity "Sm"?
Thanks,
bob
What is the difference between Section VIII div 1 and Div 2? Also, what is the differnce between allowable stress value "S" and design stress intensity "Sm"?
Thanks,
bob





RE: Section VIII Div 1 versus Div II
see thread http://www
There are three kinds of people in this world; those who can count and those who can't.
RE: Section VIII Div 1 versus Div II
By the nature of your repeated posts regarding ASME B&PV Code, do you actually have a copy of the applicable Code sections?
RE: Section VIII Div 1 versus Div II
RE: Section VIII Div 1 versus Div II
Your question requires one to write a paper to answer properly. The short answer is Div. 1 is design by rules (follow the formulas in the Code and you must follow it to a "T"), where as Div. 2 is design by detailed analysis to justify the design.
Suggest you read this short paper. Link below:
http://absa.ca/faq/SectionVIIIcomparison.PDF
To get the answer, read the Codes. Best take a training course. ASME have 2 great courses to answer your questions.
RE: Section VIII Div 1 versus Div II
RE: Section VIII Div 1 versus Div II
Div 2, is a alternative way to design a pressure vessel, in a more "Economical" point of view; regarding with the requeried material thickness: you will get less material thickness, but the material inspection is more hard and more demanding than Div 1, as well Div 2 allow you to design by "stress analysis" using a FEA software for example (appendix 4), so design by analysis is allowed.
Div 1 and Div 2 uses diferent values os "allowble stress" due to the fact of the nature of the assumption taken during their formulation.
hopping that will help you a little bit.