You must have seen manholes all your life, in the middle of the streets, on the sideways, and at various other places. Perhaps apparently, manholes aren't anything unusual for any of us but do their use seem unusual? Why do sewer systems need a gate after every kilometer? If the hole always remains close, then why did they dig a hole and out a gat eon it in the first place? However, we would like to tell you that out of all the bizarre and unusual things in this world that are there for no reason at all and serve no function whatsoever, manholes aren't a part of them. Manholes are extremely useful for so many reasons that if you would get to know them in-depth, you wouldn't question their existence again. As far as their opening and closing are concerned, they are not opened when people are driving on the road or walking sideways because it can result in an accident. Thus, don't worry; people do open manholes whenever there is a need to open them; we hope you get to see it opened once in your life, not a wish anyone would ask for purposely, but anyways.
What Is the Purpose of Manholes?
We all are aware of one thing that
manholes take in the stormwater and help in preventing floods, but other than
this very basic purpose; manholes have a number of other very important
purposes too. Suppose if anyone wanted to inspect the sanitary tank, then it
would have been an impossible task without the presence of manholes. Thus, when
anyone wants to inspect a sanitary tank, they just have to open the sanitary tank manhole, thereby facilitating the tank's inspection. Other than
inspection, the sewers and tanks also need time to time maintenance which is
done by accessing them through the manholes. These two things for sure cant be
done effectively in the absence of manholes. The other very essential purpose
of manholes is that they help the sewer systems and sanitary tanks in releasing
gases that might be forming inside these systems. The stormwater does go inside
the sewer through manholes, but there is also a need to direct the stormwater
that is coming in and change its direction if needed. In that, manholes play a
significant role as they are made as wide that a man can easily fit in it, and
that is how municipal parties direct and align sewer systems.
Types of Sanitary Tank Manholes:
- Non-pressure
circular sanitary manhole:
The working of this manhole is like
that it is connected with the body of the tank by a hinge. They are very easy
to open just with a handle, and one can also close them without having to apply
a lot of pressure.
- Round Sanitary Tank
Manhole with Presser:
To access this manhole, one first
has to remove its screws and open it with the help of a handle. The manhole is
connected to the frame through the hinge and needs to be closed properly to
avoid leakage.
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