Where do gabion baskets come from?

Cage full of rock

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Not to be confused with Bastion

Reinforced earth with gabions supporting a multilane roadway Gabions as X-ray protection during customs inspection

A gabion (from Italian gabbione meaning "big cage"; from Italian gabbia and Latin cavea meaning "cage") is a cage, cylinder or box filled with rocks, concrete, or sometimes sand and soil for use in civil engineering, road building, military applications and landscaping.

For erosion control, caged riprap is used. For dams or in foundation construction, cylindrical metal structures are used. In a military context, earth- or sand-filled gabions are used to protect sappers, infantry, and artillerymen from enemy fire.

Leonardo da Vinci designed a type of gabion called a Corbeille Leonard ("Leonard[o] basket") for the foundations of the San Marco Castle in Milan.[1]

Civil engineering

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Bridge abutment with gabions

The most common civil engineering use of gabions was refined and patented by Gaetano Maccaferri in the late 19th century in Sacerno, Emilia Romagna and used to stabilize shorelines, stream banks or slopes against erosion. Other uses include retaining walls, noise barriers, temporary flood walls, silt filtration from runoff, for small or temporary/permanent dams, river training, or channel lining. They may be used to direct the force of a flow of flood water around a vulnerable structure.

Gabions are also used as fish screens on small streams. Gabion stepped weirs are commonly used for river training and flood control; the stepped design enhances the rate of energy dissipation in the channel, and it is particularly well suited to the construction of gabion stepped weirs.[2]

A gabion wall is a retaining wall made of stacked stone-filled gabions tied together with wire. Gabion walls are usually battered (angled back towards the slope), or stepped back with the slope, rather than stacked vertically.

The life expectancy of gabions depends on the lifespan of the wire, not on the contents of the basket. The structure will fail when the wire fails. Galvanized steel wire is most common, but PVC-coated and stainless steel wire are also used. PVC-coated galvanized gabions have been estimated to survive for 60 years.[3] Some gabion manufacturers guarantee a structural consistency of 50 years.[4]

In the United States, gabion use within streams first began with projects completed from to on North River, Virginia, and Zealand River, New Hampshire.[5] More than 150 grade-control structures, bank revetments and channel deflectors were constructed on the two U.S. Forest Service sites. Eventually, a large portion of the in-stream structures failed due to undermining and lack of structural integrity of the baskets. In particular, corrosion and abrasion of wires by bedload movement compromised the structures, which then sagged and collapsed into the channels. Other gabions were toppled into channels as trees grew and enlarged on top of gabion revetments, leveraging them toward the river channels.

Gabions have also been used in building, as in the Dominus Winery in the Napa Valley, California, by architects Herzog & de Meuron, constructed between and . The exterior is formed by modular wire mesh gabions containing locally quarried stone; this construction allows air movement through the building and creates an environment of moderate temperatures inside.[6][7]

Variations in design

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Bank protection made with mattresses

There are various special designs of gabions to meet particular functional requirements and some special terms for particular forms have come into use. For example:[8]

• Bastion: a gabion lined internally with a membrane, typically of nonwoven geotextile to permit the use of granular soil fill, instead of rock.
• Mattress: a form of gabion short in height relative to the lateral dimensions; commonly very wide. For protecting surfaces from wave erosion and similar attack, rather than building or supporting high structures.[9]
• Trapion: a form of gabion with a trapezoidal cross-section, designed for stacking to give a face that is sloping rather than stepped. The term is in wide usage, but in contexts related to gabions at least, appears to be a trademark registered by Betafence Limited.

Military use

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Gabions with cannon, from a late 16th-century illustration

Early gabions were round cages with open tops and bottoms, made from wickerwork and filled with earth for use as military fortifications.[10]:&#;38&#; Willow twigs were brought from East Lothian to make gabions to protect gun emplacements in Edinburgh in April , during the siege of Edinburgh Castle.[11]

These early military gabions were most often used to protect sappers and siege artillery gunners.[10]:&#;39&#; The wickerwork cylinders were light and could be carried relatively conveniently in the ammunition train, particularly if they were made in several diameters to fit one inside another. At the site of use in the field, they could be stood on end, staked in position, and filled with soil to form an effective wall around the gun, or rapidly construct a bulletproof parapet along a sap. During the Crimean War, local shortages of brushwood led to use of scrap hoop-iron from hay bales in its stead; this in turn led to purpose-built sheet-iron gabions.[10]:&#;182&#;

Today, gabions are often used to protect forward operating bases (FOBs) against explosive, fragmentary, indirect fires such as mortar or artillery fire. Examples of areas within a FOB that make extensive use of gabions are sleeping quarters, mess halls, or any place where there would be a large concentration of unprotected soldiers. Gabions are also used for aircraft revetments, blast walls, and similar structures. A gabion is often referred to as a "Hesco bastion".

• The interior of Fort Stedman in , showing a breastwork constructed with gabions to protect gun positions

• Modern Hesco bastions

Impact attenuation

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Gabions may be used for attenuating dynamic load as those resulting from impacts by vehicles or rockfall for example. First, gabions may be suitable as a vehicle restraint system in scenic lower speed roads.[12] Second, when used as facing of earth-reinforced structures with a vertical face, gabions offer a more deformable surface to impact compared to other classical geotechnical alternatives. This higher deformability results from crushing and large displacements of the fill content. As a result, the impact load transmitted to the structure is reduced, due to both impact energy dissipation and peak force attenuation. In an optimization process, the fill material can be adapted to meet specific requirements, in terms of impact response. This in particular led to the use of recycled materials (tires and ballast from railway tracks) in the core of some rockfall protection embankments.[13][14]

See also

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• Cellular confinement &#; Confinement system used in construction and geotechnical engineering, a small-scale mattress gabion used for roads, retaining walls, and protective structures.
• Hesco bastion &#; Flood control and military fortification barrier, a modernized version of the same concept
• Maccaferri gabion &#; Type of rock-filled cage, wire mesh gabions introduced into modern civil engineering
• Stepped spillway &#; Structure for energy dissipated release of flows from a dam or levee

References

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• Freeman, Gary E.; Fischenich, Craig J.(May ), "Gabions for Streambank Erosion Control", Environmental Laboratory, U.S. Army Corps of Engineers.
• University of New South Wales Water Research Laboratory, Research Report No. 156, "Some factors affecting the use of Maccaferri gabions and reno mattresses for coastal revetments", October , C. T. Brown, et al.

Gabion baskets have been used for thousands of years in civil engineering and outdoor landscaping projects. Whether you have been searching for &#;gabion stone suppliers near me&#; or are curious to know more about gabion baskets, look no further. To give you some insight into these functional yet decorative outdoor structures, we will answer some of the most frequently asked questions about gabion baskets.

 

What are gabion baskets?

Gabion baskets, also known as gabion cages, are square or rectangular wire mesh boxes filled with gabion stones. These enclosures can be used for a variety of applications in both domestic and commercial settings.

What are gabion baskets used for?

Gabion baskets are most commonly used as retaining walls for erosion control and to prevent slope soil from sliding or eroding. Gabion baskets can also be used to create temporary flood walls, perimeter fences, and can even be used for more creative applications, such as planters, pond surrounds and much more.

Can you stack gabion baskets?

Yes, gabion baskets can be stacked to create a larger and stronger structure. Gabion walls are often made up of several layers of stacked gabion baskets.

What are gabion baskets made of?

Gabion baskets are made of wire mesh. At Mainland Aggregates, we supply high-quality Galfan welded mesh gabion baskets that offer superior strength over standard woven wire gabion baskets.

What to fill gabion baskets with?

Gabion baskets can be filled with a variety of materials. Most frequently, gabion baskets are filled with gabion stone. We stock a wide range of gabion stone for sale, including Celtic gabion stone, Scottish gabion stone, York gabion stone and Dove grey gabion stone. Our gabion stone is available online in bulk bags or loose by the tonne.

How to fill gabion baskets?

View our simple and easy-to-follow gabion basket installation guide to find out both how to fill gabion baskets and how to create gabion retaining walls.

What size stone for gabion baskets?

Our gabion baskets are often filled with gabion rock between 100mm and 275mm in size. If you are looking for stones for gabions, browse our range of gabion stones today.

Where to purchase gabion baskets?

Gabion baskets can be purchased online at Mainland Aggregates. Our gabion baskets are available in various sizes, including 0.5m x 0.5m x 0.5m gabion baskets, 1.0m x 1.0m x 0.5m gabion baskets and 1.5m x 1.0m x 1.0m gabion baskets. We offer UK wide delivery.

Are gabion baskets expensive?

Gabion baskets are cost-effective and long-lasting options to create a variety of landscape features and civil engineering projects. Contact our team today for further advice and to discuss your project&#;s requirements.

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