manhole

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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 ?
In recent past, some unscrupulous elements used to steal the manhole lids to sell them to scrap dealers.
Open manholes in different areas including Pirwadhai, Dhoke Hasu, Saidpur Road, China Market Road and several other localities have been without covers for the last few weeks, endangering the lives of the citizens.
Lahore -- A minor boy died after falling into a manhole in Shahdra area of Lahore on Monday, rescue officials said.
He said: "I asked Tracy where she had last seen Max and then I said, 'Hang on, the grass is very long around there and there's a lot of manholes.
The repercussions could be dangerous, with the possibility of people falling down manholes.
on Thursday after the witnesses discovered the fawn at the bottom of a 20-foot manhole.
But after a month or so, these manholes were still without any covers.
The joint venture (JV) of RQ Construction and Bergelectric (RQ-BERG) awarded Oldcastle Precast the contract for the 461, six foot by twelve foot by seven foot, precast concrete manholes of which 105 will have a McGard Fibershield locking frame and cover for added security.
It could easily be used to make seals for badly fitting and noisy manholes.
The company also called on a team of Columbia University researchers for help in predicting which of New York City's manholes might be the next to blow.
WASSIT / Aswat al-Iraq: A 30-year-old young man was killed after he fell into a wastewater manhole with his bicycle north of al-Kut city on Saturday, a local medic said.
Work will begin on January 4 in Westbourne Road, Penarth, creating a new manhole to connect into the wastewater network, and will move along the road where two existing manholes, one in the road and one in the footpath, will be modified.