Drainage Material Behind Retaining Wall

Why proper drainage is important for retaining wall performance.

Drainage material behind retaining wall.

A retaining wall is commonly used in landscaping to either make better use of a slope or create a decorative statement. Without the right amount of base material water builds up underneath the wall and pushes the base layer out. Extend from the base up to within 150 200 mm of the top of the wall. Ensure that the drainage pipe.

Is drainage behind a retaining wall important. When drainage goes unaddressed hydrostatic pressure will build up behind the wall and cause damage such as bulging or cracking. Drainage gravel is essentially used in any location where you need water to run freely and with minimal resistance. Regardless of the reason why a retaining wall is used it is typically constructed of a material such as brick concrete stone or wood timbers.

25 jun drainage behind retaining wall. However retaining walls are built with a certain capacity in mind. Every landscape project is different and may require different quantities and sizes of drainage material. First is to make sure your landscaping contractor backfills at least a foot of space behind the wall with gravel.

The design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning. Retaining walls must have drainage behind the wall to prevent water build up that increases the load or lateral pressure and reduces its bearing capacity. The grading behind a retaining wall also has an effect on the buildup of water. Here are the top 3 ways to prevent drainage disasters when building your retaining wall.

Retaining walls also fail because the base layer was not leveled properly. This causes surface water to move in the direction of the wall which can lead to accumulation. Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks. Place a minimum thickness of 300 mm of clean metal or gravel drainage material immediately behind the wall.

An unlevel base layer allows areas for water to wash away certain sections more than others which creates an unstable. The most common usage is behind retaining walls or sub surface drainage trenches running underneath lawns and gardens. When people think of retaining walls they tend to think about all the solid materials that go into making the job from how strong and thick the steel beams are to the strength and beautiful design of the concrete sleepers the drainage is an afterthought and is like really drainage is it even necessary or is it just one of those overdone. Grading can be used to reduce the amount of water directed toward the wall.

The soil behind a retaining wall typically slopes toward the wall. There are a number of ways to ensure proper drainage of water from behind a retaining wall. Do choose a material you can easily work with.