Weekly “What is it?”: Gabions - UF/IFAS Extension Escambia ...

I became familiar with the term &#;gabion&#; 20 years ago when I worked for the Florida Department of Environmental Protection, when helping people manage ongoing erosion problems was an almost-daily task. Northwest Florida&#;s soils are often full of highly erodible sand. When coupled with our frequent rains, it can be difficult to keep soil in place. While there are many temporary measures used to prevent erosion&#;like mulch, hay bales, silt fences, and riprap&#;the only natural and mostly permanent way to keep soil intact is through vegetation. The roots of grasses, shrubs, and trees help to bind soil in one place, preventing erosion and sometimes even building up more land. Living shorelines&#;vegetated marshes along waterways&#;are an excellent solution for waterfront property, but deserve their very own blog post.

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Gabions, however, are a reasonable semi-permanent solution for a heavily eroded or sloping area that needs a quicker fix and a little more engineering. Often seen adjacent to bridges and on steep slopes, these &#;hardscapes&#; use bundles of rock to hold in the soil. Gabions (from the Italian term for &#;cage&#;) are a very old (use dates back to the ancient Egyptians) engineering technique for building walls, dams, or bridges. A common early use was along rivers as a shoreline stabilizer or flood attenuator. They have been popular with military personnel as fortification walls over the years, as they are relatively quick and easy to build using local materials. To form a gabion, wire cages are filled with rocks (and sometimes soil) to make large rectangular blocks. The blocks are then stacked next to and atop one another like Legos to form a more durable retaining wall. Since these are not solid barriers, water can pass through them and vegetation can even grow on them, allowing the gabions to work alongside a more natural system.

Particularly in areas with a lot of available native rock, gabions are used as fences, pilings, walls, and in other interesting decorative and structural architectural applications. Gabions are simple enough that a homeowner can install them, although for larger erosion control projects I would recommend hiring a contractor or landscape architect. If you have an ongoing erosion problem on your property that nothing else seems to correct, you may want to consider using a gabion. If the property is on or near saltwater, however, you will want to use a marine grade caging material to avoid rust from salt exposure.

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Gabions have been a reliable and cost-effective alternative for stabilizing earthworks and controlling and directing water flow for decades. As civil engineers become increasingly aware of the advantages gabions offer, such as increased soil strength, improved drainage, and reduced erosion and sediment transport, they are more likely to consider their use in projects. In this article, we will address the advantages and disadvantages of gabion walls for civil engineers to consider in their projects.

Advantages of Gabion Walls

One advantage of gabions is that they can be used to stabilize slope embankments. The interlocking wire mesh of the gabion creates a strong lattice that can withstand the forces of moving earth and water. This makes them ideal for use in areas prone to landslides or erosion.

Another advantage of gabions is that they can be used to control and direct water flow. The wire mesh of the gabion can be used to create dams, channel water around problem areas, or direct water to where it is needed. This makes them ideal for use in areas prone to flooding or drying out.

1. Cost effective type of

   retaining structure

   .
2. If they are properly constructed, the life span is higher
3. Gabions can be used to control the corrosion.
4. They are good for the bad weather conditions
5. Environmentally friendly construction
6. Can be installed easily.
7. No pour water pressure development
8. Has good aesthetic appearance

Disadvantages of Gabion Walls

A disadvantage of gabions is that they can be expensive. The cost of the wire mesh, the rocks, and the labor to assemble the gabions can add up quickly. This is often the deciding factor for civil engineers when choosing whether or not to use gabions in their projects.

A final disadvantage of gabions is that they can be unsightly. The wire mesh can be a eyesore, and the rocks can be an eyesore as well. This is often the deciding factor for homeowners when choosing whether or not to use gabions in their projects.

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While gabions offer some advantages, there are also some disadvantages that need to be considered. Civil engineers should weigh the cost, the aesthetics, and the required maintenance when choosing whether or not to use gabions in their projects.

Another potential theme that could be explored in this essay is the history of gabions. Gabions have been used for centuries, and their use has varied over time. This could be a interesting topic to explore for civil engineers who are considering using gabions in their projects.

1. Required Maintenace
2. Initial cost would be higher.
3. No resistance to the movement of water through the wall

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