City requirements.
A round manhole cover will not fall through the hole, A square one will.
Yes it will give
wala
Rim, on a manhole, is the elevation of the top of the cover on the manhole. In a roadway the rim will at be final grade, in grass they can be sumped, flush or stick up.
"Manhole covers" are simply spelled "manhole covers". The reason most of them are perfectly round is that a round cover cannot slip down into a hole that is even just slightly smaller than the cover (as can oblongs or squares).
Manhole covers are used for many things. Manhole covers are used to cover up holes in the ground where sewage can be found in order to protect people.
with a crowbar =] or brolic hands =]
to help people don't fall in it?
A manhole weighs nothing...it's a hole. It's the cover that weighs about 100 pounds.
prying a manhole cover out of the road
he was sommitting cewercide
strong, malleable and dense