Appendix 13 question
Appendix 13 question
(OP)
For a rectangular pressure vessel, let's say the outside dimensions are 1 x 1 x 4 "units" long.
One cross section is 1 x 1 and the required thickness calculations would be very different from the 1 x 4 cross section analysis. What is the correct way?
One cross section is 1 x 1 and the required thickness calculations would be very different from the 1 x 4 cross section analysis. What is the correct way?





RE: Appendix 13 question
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RE: Appendix 13 question
RE: Appendix 13 question
RE: Appendix 13 question
Cheers,
gr2vessels
RE: Appendix 13 question
RE: Appendix 13 question
RE: Appendix 13 question
I don't have reinforcement, Appendix 13 caters for both reinforced and un-reinforced cases. Still I think your point is relevant. But now, by choosing the "long" axis, haven't you then chosen to only perform the analysis on the "easy" section and it would be possible to pass the calculation in this direction, but fail in the other direction if you were checking to see if a certain thickness is sufficient?
RE: Appendix 13 question
Example 13-17(a) is just about spot on for your example. I would consider the longest dimenison to be the centerline and adjust the equations to accomodate the per-unit-width as in example 13-17(a). I think you have some valid points but ASME has made some assumptions that are not perfectly clear regarding the design as it is difficult to determine the "end/head" in your case.
RE: Appendix 13 question