Dear all:
Now I had a question about subject, because this two pipe lines had different working status(different temp. different press). So used Environment->Include Structural Files and Include Pipe Files, I don't konw this analyze result by which working status.
And I had other question , bulid this model, I want to know the strength of the structure(L3x3x0.3125) by adding the possibility of supporting the two pipelines.
Thank you

You need to explain your problem more clearly. Do you have any plots or diagrams ?