A manhole is called by many
other names, including a utility hole, inspection chamber, maintenance hole,
cable chamber, access chamber, or confined space. It is a hole made to fix the
underground services. These underground services which needed to be fixed
include sewers, gas, electricity, storm drains, and telephone.
The opening is sheltered by a
manhole cover. It is manufactured to prevent people from falling down the hole
and to stop anyone going underground if they are not permitted to. Manholes are
mostly found in urban areas, such as in the streets and sometimes under
footpaths. They are usually round in shape to stop the manhole cover from
sinking into the hole.
The function of a Manhole
- Their
function is to carry out cleaning, inspection, and removing any hindrance
in the sewer line.
- Manhole
permits the connection of sewers or altering the direction of sewer or
arrangement of sewer or both.
- They grant
the escape of substantial gases through perforated cover and thus aid in
aeration of sewage.
- They enable the placing of sewer lines in suitable lengths.
Manhole Covers
The manhole covers are
manufactured of concrete, cast iron, or a mixture of concrete and iron. Manhole
covers are fabricated for the security of anybody who is passing above the hole
of a drain. Also, a typical manhole cover size is being intended to fit in a
personal size as its next purpose is through it, a precisely trained individual
can pass through it when maintenance is required on the sewer or during the
call of setting on the underground services.
Interesting Facts About Manhole
Covers
- Around 18
million of the manholes dots the surface of the globe.
- Romans were
the first to make manholes with sandstone in the 1st century A.D.
- The ancient
square pegs were used as grips for the horse hooves.
- The weight
of a modern manhole cover is about 110 LBS.
Why are most of the Manhole Covers Round?
A square manhole cover is tilted
on its side, which can lead to any injury and the sinking of a manhole hole
while the round manhole cover cannot fall down around a hole. It could easily
be carried out by rolling
The tank manhole suppliers
provide these manhole covers for different industries, including
pharmaceutical, food, dairy, beverage, biotech, etc.
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