Pg. 16-17 of the attached document "Piping Stress Analysis Seminar - Part-II by G. Palani" states the following:
Expansion Loops
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Generally, if the total expansion in any direction on the pipeway is less than 10 inches, the loop could be avoided by locating the anchor in the middle of the run.
The total expansion between the loop anchors should not exceed 12 inches.
I would be extremely grateful if someone can quote me a reference from some engineering standard/best design practice document for these guidelines concerning Expansion Loop Requirements.
Regards