Manhole: You must have seen the manhole made on the road. Many manholes are open, but most of the manholes are systematically covered. They are made for very important works. With the help of this, engineers, laborers and inspectors etc. are able to complete the repair work. The covers covered on these are always of round shape. But, have you ever wondered what could be the reason behind this? After all, why only round covers are put on them? Let’s know about it…
Why are manhole covers round?
Actually, the reason behind making the cover of the manhole always round is to prevent the accident from happening. Its cover is made round because the manhole is also in circular shape and so that the cover does not fall, it is also made round. But, it is not that just because of this it has been made circular, but there are many practical, functional, engineering etc. reasons behind it.
other arguments
Apart from this, many arguments also say that after removing the circular cover, it is very easy to carry it from one place to another. The circular manhole cover is less expensive and more efficient. They are very heavy, in such a situation, being circular, they can be rolled and taken from one place to another. But, if they were of some other shape instead of round, then it would not be easy to take them from one place to another.
how much does it weigh
The manholes are covered with plates made of very heavy metal, which can be easily removed. If we talk about the weight, then the weight of a manhole cover is usually between 90 and 136 kg. These are made of concrete or cast iron.
Advantages of manhole cover
The edge of the manhole opening has a lip around it over which the cover fits easily. These covers protect pedestrians on the road from falling into the sewer unknowingly and also prevent debris (garbage) from falling into the sewer. Due to which the sewer and water system continues smoothly.
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