I hope you've reached the right place, and I hope that you're over eighteen. This website is for adults only. No, I don't sell adult toys or videos or anything like that, this isn't a porn site. But it is the site of an erotic romance writer.


If you're looking for a steamy read, long, short or in between, where the characters are all over each other, get down and dirty, than I can guarantee that you will find something here. I'm going to level with you, my erotic romances are explicit and graphic in nature, but they all have happily forever or happily for now endings.


Enter at your own risk!


BLOG BELOW

TORY RICHARDS

Erotic Author

Saturday, May 17, 2008

Trivia Question

Why are manholes round?

First reader who answers it correctly receives a download copy of one of my books, their choice. Winner announced next Saturday.

6 comments:

Tina said...

so men can make it up and down a shaft?

Ironeyes said...

Reasons for the shape include:

A round manhole cover cannot fall through its circular opening, whereas a square manhole cover may fall in if it were inserted diagonally in the aperture (A Reuleaux triangle or other curve of constant width would also serve this purpose, but round covers are much easier to manufacture.)
Round tubes are the strongest and most material-efficient shape against the compression of the earth around them, and so it is natural that the cover of a round tube assume a circular shape.
The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic. Round castings are much easier to machine using horizontal boring mills.
Circular covers do not need to be rotated to align them when covering a circular manhole.
Human beings have a roughly circular cross-section.
A round manhole cover can be more easily moved by being rolled.
If an automobile rolls over a dislodged manhole of another shape, the sharp corners could puncture the automobile's tire, whereas a circle doesn't have corners.
It's easier to dig a circular hole.
Tradition
Aesthetics
Other manhole shapes can be found, usually squares or rectangles. Nashua, New Hampshire may be unique in the U.S. for having triangular manhole covers that point in the direction of the underlying flow. The city is phasing out the triangles, which were made by a local foundry, because they are not large enough to meet modern safety standards, and larger triangles cannot be found
Lotsa reasons, which one do you prefer?

Tameka said...

Because it's easier to move down or up the hole.

Cathy said...

A round manhole cover cannot fall through its circular opening.

Round tubes are the strongest and most material-efficient shape against the compression of the earth around them. The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic.

Round castings are much easier to machine using horizontal boring mills. Circular covers can also be moved around by rolling, and they need not be aligned to put them back.

ilona said...

Because it is easier to pour hot metal into a circular mold than one with sharp corners
The facts that it makes it easier to move and less likely to fall through the hole are bonuses.

Debbie Wallace said...

Thanks for playing everyone!

The answer I was looking for, according to the book of answers that I have, is: A round manhole cover cannot fall through its circular opening.

Congratulations for being the first one to get it right, ironeyes! Please e-mail me with your book choice.