Monday, 15 June 2015

Oh my god! (19) Urine repellant paint

Oh my god! (19) Urine repellant paint

I recently read an article about a urine repellant paint, which is highly hydrophobic so when you pee onto a wall, your urine will splash back onto your shoes and pants  
(translation: before and after):



Some walls treated with the paint have a warning sign: 
"Do not pee here. We pee back!"
 
This paint was used in St. Pauli (read light area) in Hamburg, and cities elsewhere consider using it. 

http://wirpinkelnzurueck.de/ 
Video 1:30, German with English subtitles

http://www.welt.de/vermischtes/kurioses/article138165373/Die-Pinkel-Posse-von-St-Pauli.html

http://www.cbsnews.com/news/could-pee-resistant-paint-curb-public-urination-problem/

http://www.irishtimes.com/news/world/europe/hamburg-splashes-out-on-urine-repellent-paint-1.2137534

http://weburbanist.com/2015/03/05/backsplash-deflective-peeback-walls-fight-public-urination/

Drawbacks are high price (500 Euro for 6 sqm, see link) and ease of circumvention: the stream of pee is reflected like light in a mirror, if you don't pee perpendicular to the wall, it won't get on your shoes/pants, but on onto your neighbor's. 

Manufacturer's website: http://www.ultraeverdrystore.com/

Ultra-Ever Dry is a superhydrophobic (water) and oleophobic (hydrocarbons) coating that will completely repel almost any liquid. Ultra-Ever Dry uses proprietary nanotechnology to coat an object and create a barrier of air on its surface. This barrier repels water, oil and other liquids unlike any coating seen before. 

Scientific background:
http://en.wikipedia.org/wiki/Ultrahydrophobicity 
http://en.wikipedia.org/wiki/Superhydrophobic_coating
http://en.wikipedia.org/wiki/Lotus_effect  

Pee-Bumps 

This problem exists worldwide, since ancient times. Corners outside of buildings have been filled with stone to prevent people from peeing there. I saw them in Paris, but didn't take a picture and don't know the French name (open for suggestion for better English name as well).

The following links contain pictures of such "pee-bumps" in Venice, where they are called pissotte (plural; pissotta singular):

http://doves2day.blogspot.com/2012/07/the-stones-of-venice.html
 
https://ytaba36.wordpress.com/2011/11/06/public-service-notice/ 

Those examples above are only encountered in corners. A solution for walls might look like this (stainless steel, Soi Thaniya):



or wooden in Japan:



from http://www.pattayadays.com/2013/10/an-afternoon-stroll/ reproduced with the author's permission

To tell the truth, I don't know if that's the purpose of these structures and am open for other suggestions (or even better if a reader KNOWS what it is for).

Urinating in wash basins

Urinating in wash basins when no pissoir is available is great because it saves energy, time and water. It saves water twice: you need less and you can use the water you washed your hands winds to rinse down the pee.

The oatmeal thinks (about peeing standing, withous specifying wash basin):
The pros and cons of a man sitting down to pee
http://theoatmeal.com/comics/peeing_sitting_down
(WARNING! Plan plenty of time before visiting this site.)

When peeing in sinks in Thailand, you first should check if the sink is connected to drain or the effluent just goes on the floor below the sink (and will splash on your shoes and pants).  

Preparing this post, I learnt I'm not the only one who pees in sinks (at my place and in restarants and bars, but not when visiting friends), and you can get fired for doing so at your workplace:



Source: West Virginia Pizza Hut manager canned after peeing in kitchen sink    
http://www.nydailynews.com/news/national/pizza-hut-manager-canned-peeing-kitchen-sink-article-1.1620641 



Source: http://www.reddit.com/r/tall/comments/1cuv4u/ 

Read here as well:
** LIFE-HACK ** :: The Art of Peeing (And How You're Doing It Wrong) {PIC} {DIAGRAMS}
http://forum.bodybuilding.com/showthread.php?t=137711843 

Copyright 2015 ChristianPFC except for pictures and quotes

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