Are PEX fittings approved to be underslab? It is ok for cement to be poured over PEX pipe....

It is ok for cement to be poured over PEX pipe. Is is ok to have crimp on fittings underneath cement?
California oak tree have rust color powder and...
Answers:    i dont think so---in MISSISSIPPI-- at hand can not be any joints lower than the slab--dont know bout other states---i guess you might oughta check the local building inspectors office surrounded by your area---- hey have a honourable and safe MEMORIAL DAY---
What does a blue spruce look close to...