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In this video we demonstrate a crucial aspect of a properly designed landscape drainage system. Very often, people will tie gutters into underground drain pipe, and then run that same pipe from the downspouts right through a catch basin or surface drain on its way to a discharge point further down the line. Systems get designed this way because it saves time and materials by using one pipe to handle both tasks.
The problem with this is that it doesn't work, especially in any kind of real storm. The back pressure created by a downspout is so intense that the water running into a catch basin will flow up and out before it even passes through, flooding the very area that was intended to be drained.
The proper way to design drainage in a scenario like this is with two independent lines: one for the downspouts, and one for the catch basins. The lines can eventually join, so long as the joint is downhill. Oftentimes, an easy way to do this is as simple as offsetting catch basins a foot or two from the mainline with a Y or a sanitary T connection.
Hope you enjoy, and don't make the same mistake we see all the time in landscape drainage systems!
Негізгі бет Why You Should Not Connect Gutter Downspouts and Catch Basins on the Same Drainage Pipe
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