Hello,
Can someone give me a criteria to evaluate sustained deflections?
Actually I have a maximum vertical deflection of 9 mm in sustained case in a 6" sch 80 steam line (empty pipe+insulation) located on an elbow.
Normally I check my support arrangemet to avoid deflections above 0.1 inch (2.5 mm) but I am not sure if that is too much conservative.
Comments of the stress comunity shall be apreciated.