Garden Land Drainage Design
The main drain is in the bottom right hand corner so all of the drains flow down to the main drain.
Garden land drainage design. The french drain landscape trench drainage the catch basin drain system the downspout drainage and diverters the sump pump drainage system and the pop up emitter. If the water is still there after four hours then it s a good sign that you need drainage. Find a slope and dig a horizontal trench across its length in the direction of the drain.
We describe 6 different typical landscape drainage systems. Fill the hole with water and leave it for four hours. Note that sometimes especially after heavy rainfall accumulated surface water may not drain as fast as usual.
The channels can be cut as a continuous furrow in the topsoil about 1 5 feet 40cm deep. Use a string and a string level to adjust the slope of the trench and check it constantly. You can construct the drain to accept water along its length and disperse it underground.
The water will simply soak into the soil as it flows along the perforated pipe. In this page we provide short descriptions of the different yard drainage systems and their pros cons. The land drains will need to be either 80mm 100mm in diameter.
Perforated plastic drainage pipe 80mm can now be bought from many garden centres and all builders merchants in 25 rolls. Dig a hole into the soil approximately 60cm 2 feet deep. You should dig the trenches at 1 metre centres.
A properly designed french drain system does not require an outlet. Please see an example on the right. Ever since the romans used them to solve drainage problems not much has changed perforated plastic pipes holes at the top or bottom depends who you ask came and went french drains still work.