A french drain is a gravel filled trench that directs water away from an area where it accumulates and disperses it somewhere more appropriate.
Best gravel for french drain.
With an all gravel drain that s to the surface like this that s wrapped.
You re taking in the water throughout the entire system.
For example a french drain without perforated pipe needs 1 inch gravel.
The simplest french drain consists solely of a.
Areas that will see especially heavy flow may need larger gravel.
This type of natural gravel can be used in the same manner as crushed rock and is most commonly used in the regions where it is produced.
The upper 12 inches above the pipe shall be filled with native soil to avoid having crushed stone over the perforated pipe that could damage the pipe.
In general you want to aim for inch to 1 inch gravel for drainage.
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Or projects without drainage pipes may also need larger gravel.
Gray crushed stone gravel is the most common type of gravel.
Being careful not to injure the pipe drainlayers form a layer of larger stone on top of the pipe then finish with a layer of pea gravel.
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French drain gravel.
Pea gravel is laid first then your pipe.
This type of gravel made from machine crushed stone is also a popular choice for landscape design and for constructing french drains as the size and shape of the rock fragments promotes proper.
You can t beat a gravel french drain.
Smaller gravel such as pea gravel would not allow sufficient water flow.
As its name implies shell gravel is made up of ground shells and other natural materials found on beaches and in coastal areas.
No matter what the gravel or stone opt for washed varieties otherwise fine dust and particles may hinder or even stop water flow.