r/PeterExplainsTheJoke • u/uhohelle • 13h ago

Meme needing explanation i’m a girl i don’t get this

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like why wouldn’t this work. is it cause of the urinals so close to the sink?? or like.. cause idk

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u/CheesecakePretend553 13h ago edited 10h ago

This and I'm no plumber, but I'd imagine this would unnecessarily complicate the piping setup.

Edit: My notifications are full of so many conflicting answers lmao

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u/aurumtt 13h ago

i don't think the piping will make much difference in cost when it's newly installed. the panels totally would though. these badboys are deceptively expensive.

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u/NesterPower 12h ago

No the pipes they use are different sized this would add at least double the piping if not more

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u/DevilsPajamas 12h ago

For plumbing it would make no difference. The sanitary connection is 4" going to a water closet, urinal is 2". Urinals connect to the same sanitary main. Only way it might cost more is if the end of the line is a water closet instead of a urinal, but you are literally only talking about maybe 12 feet of 4" PVC pipe instead of 2" depending on bathroom fixture configuration.

Water connections are similar. Urinals have 3/4" water connection and water closets are 1" (assuming flush valve).

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u/Nemasis72 9h ago

Unless you're doing a stadium with tons of big bathrooms, material doesn't really move the needle all that much whether you're running 2" or 4", cast iron or PVC. The biggest issue I see is the fact that your first WC dictates your max height and you can only go down from there. If you have the typical UR/WC layout, you can start high on the URs and drop lower when you hit the first WC

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u/MakeItHappenSergant 6h ago

And I imagine that's why a lot of stadiums use the trough.

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u/RedOceanofthewest 1h ago

A lot of older bathroom had troughs. My school had them.

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u/fltlns 9h ago

It would make some difference, you couldn't reduce your drainage pipe sizing for the entire run, it fine if it all drops right into a building drain that has to be 4 inch anyways but if not and you do 6 bathrooms like this on branch likes that's a lot of extra 4 inch. Plus it could complicate your venting set up

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u/DevilsPajamas 8h ago

You are going to need a 4" pipe if you have a water closet anyway. Building drains will typically be 8" minimum.