Myth as not all manhloes are circular. If the access is made of brick they are rectangular. If concrete or metal pipe they are circular. It is to do with cost not safety.
The man hole covers tend to be tapered to prevent them falling but it is a safety design of liitle merit if correct procedures are used. If you don't believe me explain why they sell rectangular manhole covers

Circular ones are far better for superheroes to use as an opportunist Frisbee-type weapon.

Or to use as a shield.

A shield, less so. The rear grippage is lacking, so operation is limited. You would have to fashion some kind of hand strap or the like.

Yes, I used the word grippage.

They do have a handle and a super hero with super strength would have no problem with holding it.

There may be all manner of shizzle on the underside, fat and tampons, etc. That would be far better in the mush of the enemy, as apposed to smeared all over the front of the superheroes costume.

It's very difficult to roll a rectangular manhole cover so they are more difficult to transport. They are similar to wheels in this respect. Yes, a round wheel is cheaper than a rectangular one to manufacture, but it is also far more functional. I suspect that even if rectangular wheels were cheaper than round ones we would still go for the latter.

If you lived in the tundra, a rectangular one may be easier to transport, due to increased slippage.

Or you could sit a rectangular one on banana skins for transportation purposes.

comment by strett (U1462)
posted 10 seconds ago
There may be all manner of shizzle on the underside, fat and tampons, etc. That would be far better in the mush of the enemy, as apposed to smeared all over the front of the superheroes costume.

On the other hand, on the overside there will be dogpoo, chewing gum and other detritus such as the fat that dripped off 666 before he fell down the hole next to it. You're better off jetwashing it before using it as a shield, and then you can place the excrement of your choice on whichever side you choose to shove in the face of your enemy.

Why do we see so much of Strett and Rev on these boards? They are welcome of course, but can anyone shed some light?

Stay on topic, Ramdini.

Dogpoo shouldn't be on a manhole cover, due to legislation; But as covered at great length on these boards a few years' ago, horse excrement is free to be dropped anywhere without troubling the owner for up pickage.

I thought the topic was Strett? Sorry! Anyway whilst you're on, why do we. Your boards seem as though they are getting more interesting with the imminent prospect of waving goodbye to Farwaz. And Assombalonga scoring twice.

I have met a few from the Derby board and quite enjoy intellectually owning them on a public forum.

Can't speak for Rev.

Delusions of adequacy from the man for whom mathematics is a mystery.

I've never met you Spart, if that is in indeed your real name.

It is just as much my name as Strett is yours and anyway I tell I am not Spartacus. You may have met me but not known it, the same for me. Such are the mysteries of life.

You probably each contain atoms that were once in the other. I suppose strett might quite like the idea of having a bit of Spart inside him though.

Just as 1 in every 200 men alive are directly descended from Genghis Kahn, the chances that we all have some of the methuselah of JA606 inside us are about even.

Virtually every Englishman is a direct desecendant of William the Conqueror as his grandson, Henry 1st sired so many illegitimate children.

Julius Caesar was also quite prolific and as his heirs were sent all over the known world then it is highly likely that you are a descendant.

Julius Caesar would never go down a man hole unless it was circular. FACT.

Beware the lids of March

Or the lids of corned beef tins, very sharp.

Fray Bentos is in Uruguay. South America supplies most of the corned beef consumed in the world.

I like it with brown sauce or Branston pickle.

Used be given spam and luncheon meat when I was growing up; I've tried it recently. Ghastly stuff.

For those really interested in manholes and their covers this has everything you need to know. Enjoy

http://www.pavingexpert.com/drain05.htm