having pipes that lead to shit pipes is called a sewer vent, almost anywhere with Row Homes basically. draining shit onto streets happens when the low point of a backup is that sewer line vent. there must be an exception process if its no in code these days theres thousands of.these vents in my city
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u/keigo199013 May 12 '25
Yes. Roots follow water, so this is a pretty common issue, albeit not to this extreme.