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BATHTUB TRAP LOCATION

California is in bold and when I click on it it takes me to you California guys post like conarb and ICE, kinda a short cut I guess?

That Jar, always up to something!:D
 
The IPC doesn't require a trap to be directly below a sink (or tub or shower drain or bathtub) although most of the time, that is where they usually are. See the base paragraph of Section 1002.1.

Can a trap be concealed? Certainly, as long as it does not have slip joint connections. Note that some tub waste/overflow assemblies ARE slip-joint connected.....whoops! Don't use those type over you will need to provide access. Use solvent-cemented fittings or soldered fittings.

NOW for the $64,000 question: What if the piping is 1 1/2 inch cast iron installed with no-hub couplings.......These couplings are, technically, not slip joints and therefore are not subject to access panel requirements.
 
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