On 04/02/2017 1:26 PM, trader_4 wrote:
On Sunday, April 2, 2017 at 12:09:15 PM UTC-4, dpb wrote:
....

Drain lines have horizontal (or nearly so) runs all the time;

Obviously, or crap would only be able to go straight down and
we all know it goes various distances, including miles, to
get where it's ultimately going.
....

For such distances it's almost certain there are also pumping stations,
though, not just all gravity-flow...

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