A hole through which a man may descend or creep into a drain, sewer, steam boiler, parts of machinery, etc., for cleaning or repairing.
A structure that allows access to the sewer system.
A safety hole constructed in the side of a gangway, tunnel, or slope in which miner can be safe from passing locomotives and car. Also called a refuge hole.
See inspection chamber.
a hole in the side of a tank through which a man can enter the tank, also the cleanout plate.
The opening in a pressure vessel of sufficient size to permit a man to enter.
a concrete structure on a gravity sewer to permit entry for servicing.
An opening usually equipped with removable cover and large enough to admit a man into a cargo tank or dry bulk trailer; may incorporate vents, fill opening and other devices.
a framed opening in the deck of a vessel which primarily provides access for a man.
a hole (usually with a flush cover) through which a person can gain access to an underground structure
Opening in a drum that permits a person to crawl in for inspection
An opening which permits access to the space between the roof and the ceiling, or below the floor.
An opening into a tank or compartment designed to admit a man.
Access opening to a hole, usually with a cover, through which a person may enter a sewer, boiler, drain, etc. (usually round to prevent the cover from falling into the opening).
an opening in an enclosed compartment, or boiler fitted with a cover, through which a man can enter for inspection
Access to underground drain for clearing blockages. See stories.
(1) A structure atop an opening in a gravity sewer to permit entry for servicing. Often placed at all points of change in sewer grade or alignment and about every 300 to 400 feet along the pipeline. (2) An opening in the top or side of an enclosed vessel to permit human entry.
Any access point. may be direct or side entrance shaft, or lamphole. May be 'buried' , i.e. covered over at same time since construction.
An access portal through the shell of the tank for workers to enter and exit.
An access hole to the drain to allow a person to enter.
An opening into a tank, boiler, furnace, vault, or other equipment through which a person can enter to service equipment; can be sealed with a removable plate or door.
An access opening to the interior of a boiler, elliptical and 11 in. by 15 in. or larger or circular 15-in. diameter or larger.
A hole through which a person may go to gain access to an underground or enclosed structure.
Hole, with removable cover, through which a person can enter into a sewer, conduit, tunnel, etc. to repair or inspect.
A manhole or maintenance hole is the top opening to an underground utility vault used to house an access point for making connections or performing maintenance on underground and buried public utility and other services including sewers, telephone, electricity, storm drains and gas. It is protected by a manhole cover, a (usually metal) plug designed to prevent accidental or unauthorized access to the manhole. The reason most manhole covers are circular is that the round cover cannot fall into its own hole (the maximum diagonal distance is the same as the diameter, unlike rectangular covers where the diagonal distance is greater than the maximum length or width).
Manhole is a game in the Game & Watch series, in which the player must close the manholes before the pedestrians fall through into the sewers. Manhole first appered as a remake on Gameboy Gallery in 1994. A port of this game was included with Nintendo's e-reader for the Game Boy Advance.