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A lid on the drop hole keeps light out of the pit and helps to stop flies and odors entering the toilet's superstructure. The lid can be made from plastic or wood and is used to cover the hole in the floor when the pit latrine is not in use. [4]
Sanitary manholes should be constructed at locations where there is a change from a simple straight sewer line. These include all junctions that combine multiple lines into one or split from one, bends, changing in elevation, changing in pipe size, and changing in pipe type.
Either before or after using the outhouse (usually after but sometimes both) a scoop or two of lime is sprinkled into the lid holes to cover the waste as to suppress the odor which also can help with the insect issues. This method of using powdered lime is also used (and for the same reasons) in common/mass graves. [citation needed]
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.
A letter box, letterbox, letter plate, letter hole, mail slot or mailbox is a receptacle for receiving incoming mail at a private residence or business. For outgoing mail, post boxes are often used for depositing the mail for collection, although some letter boxes are also capable of holding outgoing mail for a carrier to pick up.
A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes, typically protected by a manhole cover , are often used as an access point for an underground public utility , allowing inspection, maintenance, and system upgrades.
A hopper is a large, inverted pyramidal or conical container used in industrial processes to hold particulate matter or flowable material of any sort (e.g. dust, gravel, nuts, or seeds) and dispense these from the bottom when needed. In some specialized applications even small metal or plastic assembly components can be loaded and dispensed by ...
A bucket is typically a watertight, vertical cylinder or truncated cone or square, with an open top and a flat bottom, attached to a semicircular carrying handle called the bail. [1] [2] A bucket is usually an open-top container. In contrast, a pail can have a top or lid and is a shipping container. In non-technical usage, the two terms are ...
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