Blocked drains are all-to-ordinary happenings for homeowners. When this occurs, it can lead to the piling up of toilets, foil fumes and bacteria being released into the home environment–not good. If you have a blocked drain, the first thing you want to test is whether it causes a problem with your external drainage. But what exactly is "drainage outside"?
External drainage, in general, is any drainage system linking the internal plumbing of your home to the mains. Contains pipes conveying waste to the outside of your house.A manhole tube, also known as a concrete inspection chamber, is a hole in the ground used by experts in waste management to find issues with your exterior drainage.
A manhole inspection chamber is typically a prefabricated chamber, five to six feet into the ground, with sufficient space to stand or use a camera for inspection. For areas where there are more than 22 feet of pipe running in a straight line, where drainage pipes change direction at an angle greater than 30 degrees, and where the main drain runs cross a brain pipe, you typically find such chambers in.
infographic by: alldivisionbuilding.co.uk