ASME VIII Div 2 Factored Load Combinations
ASME VIII Div 2 Factored Load Combinations
(OP)
Can anyone tell me why the Global criteria required factored load combination in table 5.5 is higher than the local criteria one and could be higher than the hydrostatic test one.





RE: ASME VIII Div 2 Factored Load Combinations
You should also note that there is an error in those tables, and these errors will be corrected in the 2009 Addenda. The combinations should be:
2.4(P+Ps+D)
2.1(P+Ps+D+T)+2.7L+0.86Ss
2.1(P+Ps+D)+2.7Ss+(1.7L or 1.4W)
2.1(P+Ps+D)+2.7W+1.7L+0.86Ss
2.1(P+Ps+D)+1.7E+1.7L+0.34Ss
Your question about the factor for hydrostatic test conditions requires a thorough understanding of Part 8. Have you read through Part 8?
RE: ASME VIII Div 2 Factored Load Combinations
Despite rereading Part 8 several times I still don't understand why the Factored Load at test could be less than the operational Factored Load.
I should say that I'm more used to working with API 6A and I'm only looking at this because the analyst doing the FEA for this project is insisting that the entire ASME VIII division 2 is applicable because 6A references Appendix 4 of the 1998 edition in one place. Whilst I'm on the subject did Appendix 4 become part 4 in the new edition?
RE: ASME VIII Div 2 Factored Load Combinations
RE: ASME VIII Div 2 Factored Load Combinations