The only reference to expansion joints I can find in NFPA 13 is within section
9.3 "Protection of piping WHERE SUBJECT TO EARTHQUAKES". So, if I'm not in an
area that is subject to earthquakes, can I ignore the building expansion joints?
Usually I still add a flexible coupling just to be safe, since it isn't a huge
impact. However, I've been questioned before about whether the flexible
coupling can allow sufficient movement to accommodate the expansion joint. Is
this something I should be losing sleep over?
Keep in mind, I'm talking about areas where seismic bracing is NOT required.
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