What is the manhole?

lace or maintenance hole is a tube that connects underground tools with surface. The tube is large enough to suit the body of the service worker and is covered with the upper part, which flushes to the ground and is called the hatch cover. Vistas can be found with water and sewerage together with electric and fiber cabling. In all cases, the sprays are located at primary intersections and sometimes at intervals along the instrument line to allow workers to easily access potential problems. The underground safe can be accessible routine, hang new customers, perform security checks and ensure that additional key maintenance is performed. Usually the underground safe will be relatively small, capable of accommodating one servant at the same time. Workers can check the pipes for obstacles, make sure the pipes are in good condition, and identify the potential problem areas to be operated. Navigation in this environment requires protective clothing and a good sense of direction, because some sewers have tubes that were built centuries ago and can be dirty and confusing.

is covered by a visible part of the diagon that most people interact with. The coverage is usually round to prevent it from falling into the sprays and also facilitating back insertion when the work is completed because you do not have to match the corners. In addition, the rounded edges are less likely to catch car and wheel tires. Usually, when the diarrhee cover is removed to access the tools below them, a protective barrier is given to prevent the people from falling, and so that nothing unintentionally falls underground underground.

Many cities have horseshoes made for different companies that can provide an interesting visual history of active companies in the city, along with progressEM industrial design. The cover is usually made to look somewhat ornamental and also contains the name of the tool that installs it. Packaging can be painted or have decorative patterns and usually have small holes for inserting a selection worker, a device designed to lift the diarrhea covers.