Working on a list of areas that should have or require drain connections for coordination with plumbing. Here's what I have:
(1) plumbing standpipe to accept main drain, where the main drain can't be routed to the outside,
(2) floor drains in riser room as good practice; required if there's a pump or RPZ-type backflow,
(3) plumbing standpipe to serve drainage from fire standpipes, where they can't be drained to the outside, and
(4) standpipe or floor drain for remote inspector's tests & drains, where they can't be drained to the outside.
What am I missing?
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