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A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
English: Whitechapel, Fatberg memorial manhole cover. Outside Whitechapel Station by the crossing, where the pedestrianised Court Street meets Whitechapel Road. Discovered in 2017, it weighed 130 tonne. A fragment went on show at Museum of London.
A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...
"Manhole Covers", May 27, 2021. This page was last edited on 5 December 2024, at 18:10 (UTC). Text is available under the Creative Commons Attribution ...
Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...
A round manhole cover cannot fall down the hole because the lip (under the manhole that the cover sits on) is smaller than the cover thus the cover cannot ever fall into the hole. A square or rectangular cover (like a storm drain cover) has the same lip that the cover sits on but it is fairly easy for a cover in the shape other than a round ...
Manhole (Japanese: マンホール, Hepburn: Manhōru) is a Japanese manga series written and illustrated by Tetsuya Tsutsui.It was serialized in Young Gangan from 2004 to 2006, with its individual chapters being collected into three volumes.
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