Assume a long straight run of a HP/HT steam line requiring multiple expansion loops. Some things being considered for thermal expansion:
-location of supports, guides, limit stops, and/or anchors
-loads on supports, guides, limit stops, and/or anchors
-calculated stresses vs. allowable stresses
-long run could be on sleepers or pipe rack
-minimizing costs, i.e., expansion loops

Assuming stress allowables are satisfied and loads are tolerable, are there any other considerations? Particularly regarding maximum reasonable displacements that fall more into a best engineering practice as opposed to strictly code compliance?

thanks