I am doing the stress analysis on roped bend. Piping routing is horizontal. Bending stress I have calculated based on M = EI/R. I know the radius of curvature. Calculated bending stress, I believe, we need to add it in operating or expansion bending stress, not in sustained bending stress.

Basis of consideration:"ROPING WILL BE DONE BY IMPOSING THE FORCE TO FORM A DISPLACEMENT AND IT IS LIMITING COMPONENT. "

I want to know wheather above my statement and calculation methodalogy is correct.

Does Anyone have a good material/Guidelines on Roped piping to calculate Stresses due to roping.