I admire MAN'S WITNESS, Especially When it is to Benefit THE GREAT CITIES
In most countries the sewer covers are round and only serve to cover the entrance of the sewers, there is a city in the United States of America called Seattle where the sewer covers have a map of the city, this helps guide to people who are lost, in addition to giving a nice design to the cover.
Speaking of sewer covers, have ever wondered why the sewer covers are round, well here I have some curious facts:
The circle is the only geometric figure that, when rotated or turned, still has the same length with respect to its center. This allows the lid to not fall into the dug hole.
A round lid is easier to move, since it moves like a wheel. In addition, it is easier to place, since it does not need a specific position to fit. Also at the time of removing it does not need so much elevation.
The holes are made round because it is the best way to avoid landslides, so the cover logically has to be round. In addition, it is easier to make circular holes.
Some of the information published here belongs to the website:
https://www.vix.com/es/btg/curiosidades/4334/por-que-las-tapas-de-las-alcantarillas-are-based
The photo published here, belongs to the website:
http://notinerd.com/16-inventos-geniales-que-solo-se-ven-en-los-mejores-paises-del-mundo/
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