Vibro Stone Columns

Start a conversation today by calling Helitech Civil Construction Division at 877-537-5359.

Vibratory stone columns (or vibro stone columns, VSCs, vibro-piers, or aggregate piers) are compacted columns of aggregate that are installed through existing soils to improve the geotechnical properties of the soil matrix. The columns consist of a series of vertical lifts of compacted aggregate from a pre-determined depth up to the ground surface. They are installed utilizing a specialized vibratory probe called a “vibroflot”.

This vibroflot is utilized to create a bore hole down to a specific depth, aggregate is then introduced, and the vibroflot compacts the rock. The aggregate compaction process repeats until the dense column of rock is built up to the ground surface.

Vibro-piers are currently one of the most commonly used ground improvement systems in the world today.They are designed to improve the load bearing capacity of the surrounding soil and reduce excessive settlement.

For more information, please feel free to check out our informative brochure or specifications sheet.

Start a conversation today by calling Helitech Civil Construction Division at 877-537-5359 or fill out the form on the right.

Uses/Benefits of VSCs

Since their inception, vibro-piers have found a number of different uses. Some of the most common include:

  • Increasing bearing capacity. In the majority of instances, VSCs are used to increase the load-bearing capacity of a particular area, which, by nature, isn’t strong enough to bear the load of a proposed structure. VSCs provide improved bearing capacity by increasing the pressure of the surrounding soil through the insertion of compacted granular material or stone.
  • Reducing settlement. When soil lacks sufficient pressure, there is an increase in settlement. VSCs can mitigate settlement by stabilizing and densifying soil in need of reinforcement. In most cases, increasing bearing capacity and reducing settlement are directly related.
  • Mitigating liquefaction. In earthquake-prone areas and regions where the soil is prone to shifting, the liquefaction of granular soils is a common issue. By using vibro piers, engineers can reduce the potential for liquefaction through soil densification.

For more information, please feel free to check out our informative brochure or specifications sheet.

To schedule a quote on vibro pier installation, call Helitech Civil Construction Division today at 877-537-5359 or fill out the form on the right.

Vibratory Stone Columns Applications

In addition to these practical purposes, VSCs are an ideal solution for your projects in the following structures:

  • Multi-story buildings. Multi-story structures, office buildings, and skyscrapers place enormous amounts of pressure on the soil. Most surfaces cannot provide enough stability on their own and require additional fortification. VSCs are often used to increase the bearing capacity and mitigate settlement reduction.
  • Commercial centers. For large construction projects covering a significant geographical area, VSCs are used at regular intervals to reinforce the soil and provide additional stability.
  • Industrial facilities. When working with the previously undeveloped land, VSCs are used to increase the load-bearing capacity for industrial facilities. This is one of the quickest and most efficient ways to increase soil density without using deep foundation systems.
  • Liquid storage tanks. By their very nature, liquid storage tanks place a large amount of weight on the surface below. By installing VSCs in the area around these tanks, the soil can remain stable under extreme conditions.
  • Grain bins and grain silos. Farmland can be tricky to assess because of its undeveloped nature. When installing grain bins and silos, it’s important to ensure the surrounding soil is properly stabilized. VSCs are often used to reinforce and strengthen poor soil conditions.
  • Grain elevators. Grain elevators play a major role in agricultural farming and economic production in rural areas. When constructing these important facilities, VSCs are frequently used to increase load bearing capacity to an adequate level.
  • Farm buildings for agricultural machinery. When installing a deep foundation is too expensive or impractical, VSCs allow farm buildings to be constructed over shallow footings, soft soils, and other otherwise unpredictable conditions.
  • Wind towers and wind farms. While wind towers themselves aren’t extremely heavy, they are subject to high amounts of lateral force well above the base. As a result, large overturning movement can occur. VSCs can reinforce the foundation to ensure the increased presence of lateral force doesn’t cause soil displacement or settlement.

For more information, please feel free to check out our informative brochure or specifications sheet.

To schedule an installation today call Helitech Civil Construction Division at 877-537-5359 or fill out the form on the right.

Why Should You Use Vibro Stone Columns?

Vibro stone columns are one of the most widely used forms of ground reinforcement in modern construction and engineering. They are often preferred for their ability to meet a wide variety of needs without compromising quality.

Additionally, they are a financially savvy, economic alternative to more expensive deep foundation systems.

VSCs are ideal for mixed fills and granular soils and can usually be constructed to depths of up to 12 meters. In most cases, settlement can be improved by a factor of 1.5 to 3.0 – with bearing pressures between 100-200kN/m2 achievable.

VSCs are also preferred for their quick and efficient installation. In contrast to deep foundation systems, aggregate piers can be installed in a fraction of the time. This is particularly advantageous for construction projects under strict deadlines.

Other benefits include accelerating the drainage of soft soils and generating little to no spoils. The large majority of soil is compacted into the surrounding area and minimal displacement occurs.

For more information, please feel free to check out our informative brochure or specifications sheet.

To schedule an installation today call Helitech Civil Construction Division at 877-537-5359 or fill out the form on the right.

On Board Computer Monitoring

Helitech Civil Construction uses on board computer monitoring technology in order to ensure that the job is done correctly. This on board “Data Logger” tells us pressures in bars and depth of piles. All of this is real-time data that lets our rig operator know if we are achieving the correct psf of the pile. All of this is downloaded hourly or daily to a simple flash drive and sent to our in-house engineering team for hourly or daily review.

For more information, please feel free to check out our informative brochure or specifications sheet.

Aggregate Pier Installation Process

The installation process for VSCs is simple and streamlined.

First, a column is driven down into the ground with a device to create a hole. Granular material is then inserted into the device and compacted to create a column in the ground. The compactive device then slowly lifts and the column continues to be built closer to the ground.

To schedule an installation or to find out more about the installation process as it relates to your specific needs, please contact our team of highly trained engineers and project managers.
Simply fill out the information on our Contact Us page, and we will get in touch with you as soon as possible.

For more information, please feel free to check out our informative brochure or specifications sheet.

To schedule an installation today call Helitech Civil Construction Division at 877-537-5359 or fill out the form on the right.

Why Helitech Civil Construction Division?

At Helitech Civil Construction, we have provided technical and constructional support to a wide variety of markets and industries since 1987. Using a unique and strategic combination of engineering and construction knowledge, we have effectively positioned ourselves as a leader in geotechnical construction in the Midwest.

While our focus is on quality construction and installation, we pride ourselves on unmatched customer service and engineering support. We believe in helping our clients achieve their goals and find peace of mind.

We find customer service so easy because we truly believe in the quality of our products. Our superior products have proven successful for a number of unique and specialized applications, and we are fully confident in their ability to perform.

For more information, please feel free to check out our informative brochure or specifications sheet.

Start a conversation today by calling Helitech Civil Construction Division at 877-537-5359 or fill out the form on the right.

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