Manholes are round ….
They are Always round.
Because …. Well think about it. What would happen if they were Square?
….. Or Rectangle?
When you opened a heavy manhole cover , and they are Really heavy…. A square or rectangle or triangle for that matter, could fall in, down the whole!!! There is always a short end that could allow it to slip through the square or rectangular opening. You could left up the top, rotate it then Ooooops …. drop it down the hole.
A circle has the same diameter all the way around so if it can rest on an opening that is slightly smaller than the circumference of the circular lid ….
TaDa! It cannot slip into the hole.
we walked along green grass on this lovely balmy evening
and came to a long strip of shops and … manholes!
Like I’ve never seen before ~
One after another
each one beautiful in it’s own way
How could I have never noticed before!?
too many to post tonight
come back next Monday for more!
and there IS more!
ps ~ does anyone know why All manholes are always round?