Manhole covers are an essential part of our rural and urban infrastructure systems. The manholes offer secure and safe access to water sewerage systems. Their covers add a protection layer between the underground water sewerage system and the surface, which every one of us experiences.
Although plumbing experts and urban planners may find manhole covers very interesting, there are several facts regarding what they are made up of and how they work, which may surprise you as an ordinary person.
What is a manhole cover?
Since the transition of our sewers took place to an underground water sewerage system, we have felt the need to access the sewerage system underneath our feet. Manhole covers offer an unbreakable and strong still liftable barrier between the underground water sewerage system's entrance and the open-air world.
Too weighty for a non-professional to lift, manhole covers are a safety tool, point for accessing, and a fascinating part of the infrastructure.
How much do manhole covers weigh?
The standard weight of a manhole cover is over 113 kilograms or 250 pounds. The weight of manhole covers should strike the right balance between being too much heavy for not getting dislodged or rattled when heavy traffic goes above them, but not being too weighty that water sewerage service workers can not lift them up reasonably with a manhole hook.
It is also essential that unauthorized people like nosy teenagers cannot lift the manhole cover up and enter the water sewerage system without getting the proper training, permission, and equipment.
What are manhole covers made up of?
Usually, manhole covers supplied by the China manhole cover supplier are made up of either iron or concrete or a mix of these two materials. Manhole cover castings are employed as a template for the manhole cover. This means that concrete, iron, or the mixture of these two materials is emptied in a pre-printed design for making the manhole cover.
What are the shapes of manhole covers?
Although sometimes people might see a square manhole cover, most manhole
covers are round-shaped. Possibly, there are many reasons behind the round
shape of manhole covers. One of the reasons is that they are simple to roll
from one place to another. The round manhole covers' geometry also makes it
simpler to slide them into place without worrying about them falling into the
manhole themselves.
Considering the term "manhole" describes literally a hole through which people can make their entry into the underground sewerage system, it's necessary to have a round-shaped manhole cover that cannot fall through the manhole and possibly harm a sewerage worker.
Need of safety when working with manholes
The heavyweight of a manhole cover can make it difficult and potentially
harmful to handle. Whenever you make an effort to adjust or lift a manhole
cover safely, remember to wear protective gear. The gear includes heavy gloves,
goggles, long pants, and close-toed shoves if you are worried about
projectible dust or debris. Please also ensure that the manhole you are
entering is safe environmentally.
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