manhole

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Related to Man hole: inspection chamber, Maintenance hole

manhole

1. a shaft with a removable cover that leads down to a sewer or drain
2. a hole, usually with a detachable cover, through which a man can enter a boiler, tank, etc.

Manhole

 

a structure in a sewer network used for inspecting, cleaning, and flushing the sewers.

The manhole usually consists of a work area and, above it, an entrance area, a hatchway, and a lid. There are inspection manholes, drop shafts, and flushing shafts. Among the inspection manholes there are line shafts, built at straight sections of the sewer network; corner shafts, where the line changes direction; juncture shafts, where several lines come together; and control shafts, where the networks draining individual buildings or city blocks join the street network. Drop shafts are built where there is a substantial difference between the levels of the delivery pipes and drain pipes. Flushing shafts are used in flushing out the sediments that form in pipes carrying effluents with a slow rate of flow.

In cross section, manholes are either round or rectangular. They are built predominantly from prefabricated reinforced-concrete rings and panels. Sometimes they are brick.

IU. M. LASKOV

manhole

[′man‚hōl]
(engineering)
An opening to provide access to a tank or boiler, to underground passages, or in a deck or bulkhead of a ship; usually covered with a cast iron or steel plate. Also known as access hole; manhead.

manhole

manhole
A covered opening in a street which provides access for cleaning and repairing of a sewer beneath, or for repairing a conduit for electric underground piping or electric cables.
References in periodicals archive ?
It has been learnt that due to open man holes, non cleanliness, absence of proper sanitation system as well as no street lights are creating problems for the citizens and increase in crime rate.
Firemen were called to a leaking roof at Anfield Children's Centre and at least a dozen man holes blew across Merseyside under the weight of the water.
It can accommodate a wide range of installation options including central office, non-environmentally controlled cabinets, and outdoor poles or man holes.
The man holes are lying open and continue to gush out filth and excrement the whole day long but the respective department is not paying attention towards placing lids or arranging cleanliness of the nullahs.
Executive Engineers are directed to carry out these orders whereas all Superintendent Engineer and Executive Engineers are responsible for cleaning of lines and repair of man holes in their areas.
Tenders are invited for C/O New Block Of 16 Nos Lecture Theatres G/3 I/C Internal Electrical Installation At Nit Jalandhar Sh: Cleaning Of Sumpwell And Covering Of Man Holes.
Tenders are invited for Breaking of old/damaged refractory & casting of new refractory (thickness=8 ) on water wall screen tube area, ltsh inlet header, scw inlet header, burner top & bottom bends and all peep holes & man holes of boiler unit no.
Tenders are invited for Providing 150 mm dia SWG pipeline and Construction of Man Holes for Provinding UGD facilities to Ranganath Badavane in ward No.
Tenders are invited for Repair/Cleaning To Man Holes, Sewage Lines, Septic Tanks, Soak Pits And Misc Works At 217 Transit Camp Palchan Under Age I R And D Manali.