Splash-free urinals: Design through physics and differential equations

unified101•about 3 hours ago

For those looking: Fig 4a, the right 2 designs are the winner. https://academic.oup.com/view-large/figure/512223725/pgaf087...

I do recall there was another story of putting a "target" at the right place in existing urinals significantly improved cleanliness

pupppet•20 minutes ago

Have fun cleaning Cornucopia.

0cf8612b2e1e•about 3 hours ago

I cannot say I have a big problem with urinal design, but I do take significant issue with standard installation practices. I am an average height dude, yet many urinals seem to be installed as if the intended audience are all basketball players. Far too high such that I can imagine a decent chunk of users might have to aim up and or stand on their toes.

yummypaint•about 2 hours ago

I was expecting you to say the opposite thing! In North Carolina they are so low that the stream angle ends up much steeper than intended, like trying to use a boy's urinal. I'm tall, but still fit normally in cars etc. There should really be more variation in mounting height, or bring back those tall ones that work universally. I guess it's cheaper to make them small but mounting the flush handle below penis height is asking for trouble.

0cf8612b2e1e•32 minutes ago

That’s the real solution -bring back full height urinals.

2PqboPPmKegvanx•about 2 hours ago

>I do take significant issue with standard installation practices

I just don't understand why there is no middle option. Either on the ground for a 6 year old or set up for a 2m+ man.

jimmaswell•about 3 hours ago

How tall are you and where do you live? I'm dead-on average US male height (5'9") and I've never experienced this.

0cf8612b2e1e•33 minutes ago

5”11. Not everywhere, but it has happened enough that I have noted my annoyance.

Founderarcstone•about 3 hours ago

Quality of life upgrade for all males

Infinint•about 3 hours ago

Janitorial services are equal opportunity

slicktux•about 3 hours ago

When I use a urinal I do not aim directly on front but instead to the curved lower part. That helps guide my urine down; virtually eliminating all splash back!

delichon•about 1 hour ago

Maybe males are marginally better at geometry due to this additional hands on experience with angles and parabolas. We practice and study ballistic trajectories daily.

jimmaswell•about 3 hours ago

other people are just standing there shooting head-on?

hmartiniano•about 3 hours ago

Someone please nominate this for the Ig Nobel Prize.

dgrin91•about 3 hours ago

I'm not sure if you were joking but they actually won it this year

hmartiniano•about 3 hours ago

Thanks, I wasn't aware of this. It was jut the first thing that popped into my mind when I read the title. I wasn't the only one, apparently :)

seki285•about 3 hours ago

Finally research I can get behind.

__alexs•about 3 hours ago

You probably want to stand in front of it in this case.

khazhoux•about 3 hours ago

I stand with you, brother!

Splash-free urinals: Design through physics and differential equations

⚡ Community Insights

Discussion (19 Comments)Read Original on HackerNews