Lifting Lug Material Allowable stress

[PVdesigner]

I am curious to know why allowable stress for lifting lugs are matched with that of shell or head ? Aren't we required to use the allowable stress @ normal atmospheric temperature i.e 70F or MDMT as vessel rarely experiences design temperature while being lifted ? Thanks

 

[JoeTank]

After it's Code-Stamped, it's an ASME vessel, so it seems logical to design for a consistent set of stresses. Yes, I would vote for the use of the allowable stress at ambient conditions (say 100F).

Joe Tank

 

[TomBarsh]

The default allowable stress values applied by COMPRESS are taken as for ambient temperature. See discussion at

http://www.codeware.com/support/faq/1054.html

"Although this forum is monitored by Codeware it is not intended as a venue for technical support and should not be used as the primary means of technical support."

Tom Barsh
Codeware Technical Support

http://www.codeware.com