Mike: I don't look for a pan unless there is a habitable floor below - same for washer and furnace. Rather than get into a question of code - which might infer that you knew what code the AHJ went by at that time, why not approach it from the "Best Practice" viewpoint? People understand that.

As for the TPR valve - this has been a contentious topic in the past and one that I don't care to start up again. BUT, it's important to know when the valve leaks and as the manufacturer will state - it must terminate within sight. If it terminates inside a floor drain you won't know when it begins to leak. If it's run to the exterior it will be the same. If the floor gets wet it's a secondary concern. The primary concern is why has it opened? High pressure or temperature? That's what one should worry about and hiding the leak makes no sense to me. And besides, are we not to be pointing out safety concerns?

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Eric Barker
Moraine Woods Consulting, Inc.
Barrington, IL