Not only do many types of gravel assist in water drainage but gravel also enhances landscape design.
What type of gravel should i use for a french drain.
For a french drain without a perforated pipe opt for even larger gravel such as 1 1 2 inches across.
Pea stone works but the smooth stones settle together and don t move as much water as coarse rock.
The crushed rock is usually 1 to 2 inches approximately 2 5 to 5 cm in length and is used for a number of purposes including driveway installation building foundations and large drainage areas often found near industrial buildings.
For the best drainage look for coarse washed rock gravel that is screened with a stone size of 1 2 to 3 4 inch.
No matter what the gravel or stone opt for washed varieties otherwise fine dust and particles may hinder or even stop water flow.
Drainage gravel may be used for landscaping purposes.
For example a french drain without perforated pipe needs 1 inch gravel.
Or projects without drainage pipes may also need larger gravel.
The crushed stone varieties of drainage gravel consist of shell gravel and crushed rock.
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.
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.
Areas that will see especially heavy flow may need larger gravel.
In general you want to aim for inch to 1 inch gravel for drainage.
Smaller rock with fine particles could clog the holes of the drain pipe.
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Smaller gravel such as pea gravel would not allow sufficient water flow.
With an all gravel drain that s to the surface like this that s wrapped.
A french drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard.
French drain gravel should be washed three quarter inch minimum and as large as 1 crushed stone.
You can t beat a gravel french drain.
You re taking in the water throughout the entire system.
Pea gravel is laid first then your pipe.