A catch basin is a part of a sewer system that traps debris and prevents it from entering drainage pipes. It has a sloping inlet, a grate to trap large debris, and a bottom trap to collect small particles. Regular maintenance is required to prevent blockages. Catch basins can also prevent backflow of gases and deter rats. They can also be used in home drainage systems.
A catch basin is a part of a sewer or sewer system that is designed to trap debris so it cannot enter drainage pipes. These basins are a large scale version of the siphons used in domestic drains to perform a similar function. Most municipal sewer and stormwater drainage systems use them, and the design is virtually the same worldwide, with some minor variations. Typically, public works agencies manage storm drains and catch basins, although individual citizens would do well to keep an eye on local storm drains so they can report problems early.
These drainage sections have a large sloping inlet which collects runoff, ensuring that even when large volumes of water are discharged into the system there is minimal overflow. The entrance opens onto a pipe covered with a grate. The grate traps large debris, preventing it from entering the pipes. As water floods the catch basin, the small particles that slip through the grate settle to the bottom. The drain pipes sit above the bottom of this vertical pipe, ensuring that the water flowing into the drains is free of sediment.
Maintenance includes regularly cleaning the grate of debris so that drainage is not inhibited and periodically cleaning the bottom trap. If the particulate matter is allowed to rise high enough, it can start flowing down the drains, which can become a problem. Many cities regularly clean the drains and extract the sediment after the rainy season.
In some cases, the catch basin may be designed to prevent backflow of gases from the pipes. This is common with basins in sewer systems, so that the characteristic smell of gases that build up in the sewers does not rise to the surface, where it could irritate passers-by. The basin may also include features that are intended to deter rats, as rodents can be a common problem in drainage and sewer systems.
It is also possible to use a catch basin in a home drainage system, although the scale is usually smaller than that of a manhole cover. Many plumbers are qualified to put these in and can also provide a quick overview of maintenance techniques to ensure your dock remains effective.
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