Hi,

I am using piping code 31.8,caesar 5.2 version.I have edited the material to take derating factor for the calculation of allowables.whenever i save the file and take a run ,its showing an error called UMAT1.BIN .Everytime i save a file i have to save the edited material again, which is taking lot of time as i have to analyse lot of different load combinations.

Please help.
Thanks a lot