Drainage Material Behind Retaining Wall

The grading behind a retaining wall also has an effect on the buildup of water.

Drainage material behind retaining wall.

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. Is drainage behind a retaining wall important. Drainage gravel is essentially used in any location where you need water to run freely and with minimal resistance. Every landscape project is different and may require different quantities and sizes of drainage material.

The most common usage is behind retaining walls or sub surface drainage trenches running underneath lawns and gardens. 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 design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning. There are a number of ways to ensure proper drainage of water from behind a retaining wall.

A retaining wall is built to hold back a certain amount of soil. Retaining walls also fail because the base layer was not leveled properly. Grading can be used to reduce the amount of water directed toward the wall. 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.

Extend from the base up to within 150 200 mm of the top of the wall. A retaining wall is commonly used in landscaping to either make better use of a slope or create a decorative statement. 25 jun drainage behind retaining wall. Why proper drainage is important for retaining wall performance.

Here are the top 3 ways to prevent drainage disasters when building your retaining wall. However retaining walls are built with a certain capacity in mind. Ensure that the drainage pipe. This causes surface water to move in the direction of the wall which can lead to accumulation.

The soil behind a retaining wall typically slopes toward the wall. Install the drainage pipe correctly. An unlevel base layer allows areas for water to wash away certain sections more than others which creates an unstable. Without the right amount of base material water builds up underneath the wall and pushes the base layer out.

Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks. After laying the first course of blocks lay an agricultural drainage pipe with a geotextile sock ag pipe behind the wall on a bed of 10 20mm clean free drainage material. Do choose a material you can easily work with.