On Thu, 03 Feb 2005 09:46:22 +0000 (GMT), "Dave Plowman (News)"
strung together this:

The normal kitchen drain plumbing should cope with two washing machine
wastes given that it will cope with a washing machine, dishwasher and sink
all draining at once. Although this should be uncommon anyway.

Well, probably not. For 2 large volume appliances such as washing
machines and dishwashers etc... you really want 2" wastes in all the
common runs otherwise you can end up with a wet floor if both machines
pump out at once. Most reasonably installed wastes will be 1.5" and
could even be 1.25" depending on how [un]well it was installed.
--

SJW
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