When it comes to building a retaining wall there are many factors to consider. Basically we are using an artificial method of retention. With that we need to consider the forces that are working against us so we don’t have a failure.
First, let's talk about the purpose of a retaining wall. In many cases a retaining wall is used in a landscape that doesn’t have enough flat space. Sometimes a property has hills so steep that, without some type of retention, building is not possible or practical. Some retaining walls are used to hold up more weight than simply the soil above. These walls are considered to have a surcharge. This added weight may be a driveway with a vehicle parked on it, a shed or even a house. Any retaining wall that has this extra load, or surcharge should be engineered. Many engineering companies can offer this service. Cost for engineering and design fees should be included when planning.
What does an engineered retaining wall entail? A simple definition of engineering is the calculation of numbers to determine the acceptable failure point. Traditional non-engineered retaining walls are engineered to handle up to a four foot wall with no surcharge. But when an engineer looks at an area for a wall to be built they will look at the load as well as the different soil types. Soil types can make a huge difference in the stability or drainage characteristics. An engineer will generally provide a remedy for the specific application. This may include installation of geogrid fabric or additional drainage material.
Geogrid is a stabilization fabric which can be installed in layers which are connected to the paver block retaining wall. If installed correctly this will basically act as a wider block of the wall and integrate the wall with the adjacent soil. This method is often used with large interstate and freeway overpasses. Geogrid strengthens the soil and is compacted with base material.
Another important factor to consider is drainage. Water approaching the retaining wall from above should never be allowed to flow over the top of the wall. This can quickly erode and damage the wall. Additionally, any subsurface water behind the wall should be caught and redirected around the wall to prevent soil saturation and possible wall failure.
In the end, determining whether a retaining wall is right for you in your particular situation may be a personal choice. It might be just what you need in order to fully appreciate or enjoy your landscape. It might service a necessary function or purpose. Whatever your needs we would be glad to assist you with the design and installation of a paver block retaining wall at your home or property. For a more detailed look at the reminder of this project check out our Golfer's Paradise article.
Jasper Ridge landscaping provides “Professional Landscape Services” to the Joplin and surrounding areas; including Carl Junction and Webb City. Our service area is contained within Jasper and Newton Counties in Missouri (MO). For more information about Jasper Ridge LLC please contact us using the contact form.