1 2 m tall will require a toe drain.
Drainage pipe through retaining wall.
Often retaining walls are used to terrace yards that originally had a steep slope additionally retaining walls can help create usable outdoor space as well as control erosion see landscaping a split level home low retaining walls are frequently used as planting beds and can add interest to an.
Ways to achieve good drainage include using at least 300mm of a granular material such as gravel in the backfill the material directly behind the wall.
A retaining wall is intended to hold back soil when there is a drastic change in elevation.
There are two sorts of retaining walls as far as drainage is concerned.
Loose laid retaining wall blocks.
When you are installing the landscaped earth which the retaining wall is designed to hold up you should fit in some pvc pipes.
Not adding drainage pipes.
Some of these drains are vented through the front of the retaining wall while others may run the length of the wall and drain out to the sides.
Sites with poor draining soils or walls over 4 ft.
Impermeable walls the water is unable to flow through the face of the wall.
Ensure your retaining wall stands strong for years to come by using the correct type of stones for your project and by choosing a design that works well for your soil and lawn type.
No stones behind the wall.
Effective drainage is vital for a retaining wall otherwise water pressure known as hydrostatic pressure will build up behind the wall and lead to bulging or cracking.
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These will allow water to drain out of the earth and prevent your soil from getting waterlogged and excessively heavy.
Our experts are happy to provide solutions for your retaining wall needs.
Permeable walls the water can flow through the face of the wall.
Examples of permeable walls are.
To accomplish this vent the drain pipe to daylight or a lower elevation on the site.
Drain pipes used in toe drain applications must be properly vented a minimum of every 50 ft.
Gravity block walls see this link.
This video shows how a retaining wall should be back filled to allow for maximum drainage.
Because of the danger of allowing water to accumulate most retaining walls have built in drainage mechanisms.