Question

What are manholes?How is it useful in cities?​

Answer 1

Answer:

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Explanation:

Manholes are commonly used for connecting two or more pipes for water supply or sanitary sewer lines. Manhole is a small covered opening in a paved area allowing access beneath, especially one leading to a sewer. They are used to carry out inspection, cleaning and removing obstruction in the sewer line.

Answer 2

Manholes are often used as an access point for an underground public utility, allowing inspection, maintenance, and system upgrades. The majority of underground services have manholes, including water, sewers, telephone, electricity, storm drains, district heating, and gas

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