Soil anchoring is a method through which the ground (soil) is stabilized to enable it hold structures that cannot stand on their own. Examples of these types of structures include circus tents, bridges, masts and retaining walls.
The device with which this is achieved is known as an earth or ground anchor. It is also known as a rock anchor if it is to be used on rocky terrain. These devices are popularly used for construction or geotechnical projects.
The subject of soil anchoring and all that’s needed to get it done right is quite vast. However, you can find more information here: https://engineeringcivil.org/articles/geotechnical-engineering/ground-anchor-earth-anchor-types-anchor-length/
In this article, we would briefly examine the basics of this concept and its importance in certain projects.
Basics of Soil Anchoring
This concept might appear very complicated to a novice who does not understand civil Engineering practises. But we would break it down in the following simple steps to help you understand what it is all about.
A soil/ground anchor is made up of the anchor head, the bond length and the free stressing length.
The anchor head is the part that connects the tendon of the anchor to the structure that is to be loaded and it would always include a bearing plate and a nut. The bond length is also referred to as the socket. It is this part that moves the tensile weight of the steel tendon over to the earth.
Typically, cement grout is used to bind the tendon of the anchor and the bond length. The free stressing length however is not bonded so that it can be stretched to move load/weight from the socket that is grouted into, to the head of the anchor.
The anchor head is driven into the ground; most often the ground is pre-drilled to make the process easier. Then the bond length which is attached to this anchor head is grouted (with cement grout) into the hole and left to cure.
After this, the bond length which is also known as the steel tendon or strands is pulled taut against a block or bearing plate. It is then secured with the nuts and screwed tightly to prevent it from moving and to also withstand the movement of the structure that it is meant to hold in place.
Benefits or Advantages of Using Soil Anchors
The importance of soil anchors in construction or geotechnical (civil engineering and related fields) projects cannot be overemphasized. There are many advantages or benefits to be derived from it but we would share just a few for the sake of brevity.
It Stabilizes the Soil
It comes in handy in places where the ground cannot hold the type of structure that is to be built on it. With it, you can increase the capacity of any ground to carry heavy structural load. All you need to do is to increase the bond length to make room for heavier load.
Doesn’t Require Too Much Excavation of Soil
This is a major advantage for sites that are cramped and do not have too much land space. Additionally, it works in favour of those who are highly sensitive about the environment. This is because there is minimal excavation of earth which enhances soil retention.
Requires Minimal Maintenance or None At All
Due to the fact that the materials used for soil anchors are usually anti corrosive, they last for long. This provides a system that is permanent but doesn’t require much maintenance. In fact some sites have been known not to require any maintenance.
These devices help in development in the area of road construction and other infrastructure in society. There are places where it would have been impossible to have motor able roads without earth or rock anchors.
This refers to the fact that any kind of land can be used for geotechnical projects no matter the strength of the land. No need for any piece of land to be wasted as the poor state of the ground can be salvaged with earth anchors
We have given a brief overview of soil anchors, its composition, application and advantages. However, you can check here for more information.
Now that you have a basic understanding of the concept of soil anchoring, you can confidently begin to plan your construction project. This is especially true for those who thought that the piece of land they have is worthless because of the soil condition.
There are also many resources online if you want to find out where you can get the right materials and even personnel for your projects.
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