Becoming CNC Foundations
With our nationwide focus on being your First Choice in Ground Improvement™, Helitech Civil Construction Division is rebranding to CNC Foundations®. The same people, same family values, same great service, and same value designs that we have provided for 34 years strong.
Helitech provided a design-build Vibratory Stone Column solution with an 8,000 psf bearing capacity and to reduce overall settlements to less than one (1) inch under the dead and live loads of Western Carolina University’s new STEM building. Helitech’s design and VSC layout had to account for the Retaining wall loads, Soil backfill loads, Building column loads, and the dead weight of the walls themselves. Several large shear walls on-site had net tension loads, so Helitech designed and installed uplift anchors to resist these uplift forces. Helitech offers these and other ground improvement solutions across the Southeast.
Design Build Vibratory Stone Column Ground Improvement Method for WCU's new STEM Building Helitech CCD provides ground improvement services through the use of Vibratory Stone Columns in the southeast states of Maryland, Virginia, North Carolina, South Carolina, Georgia, and Alabama. WCU is one of just many schools and universities across the U.S. in which Helitech CCD has provided geotechnical contracting work for.
Helitech provides ground improvement services through use of Vibratory Stone Columns in the southeast states of Maryland, Virginia, North Carolina, South Carolina, Georgia, and Alabama. On this project, Helitech provided a Ground Improvement solution of 8,000 psf bearing capacity and reduced overall settlements to less than one (1) inch under the dead and live loads of Western Carolina University’s new STEM building. WCU is one of just many schools and universities across the U.S. in which Helitech CCD has provided geotechnical contracting work for. Due to the stiff silts and dense sands on this job site, Helitech pre-drilled the VSCs. The proposed structure had large exterior retaining walls up to 15 feet wide with embedded building columns, so Helitech’s design and VSC layout had to account for the retaining wall loads, soil backfill loads, building column loads, and the dead weight of the walls themselves. Additionally, several large shear walls on-site had net tension loads, so Helitech designed and installed uplift anchors to resist these uplift forces. Full Transcription: My name is Jason Courtney; I am the President of Helitech Civil Construction. Helitech provides ground improvement services; either vibratory stone columns, vibratory concrete columns, earthquake drains and or concrete modular columns in the Southeast. Helitech Civil Construction has a new location based in the Raleigh, North Carolina area. This particular location services Virginia, North Carolina, South Carolina, Georgia and Alabama and we are proud to be continuing that growth by working at Western Carolina University. Western Carolina University is one of the many universities that we have been fortunate to do ground improvement throughout the United States. At this particular job site Helitech Civil Construction is doing a design-build vibratory stone column ground Improvement method for Western Carolina University’s new building addition for their science, technology, engineering and mathematics program. Because of the high dead and live load on this particular building, Helitech was tasked to design-build a ground improvement system that would achieve an excess of eight thousand pounds per square foot. By doing this, we are able to provide our clients with less than one inch of total settlement on this particular design. Helitech Civil Construction’s vibratory stone column design and layout have to take retaining walls into consideration. Not only the weight of the retaining wall, the soil backfill and the vertical column load on that particular retaining wall. Helitech is installing uplift anchors on this particular job site because the shear walls have large net tension loads, therefore, Helitech has incorporated in its vibratory stone column design uplift anchors to reduce and take away any and all net tension load on these shear walls. Helitech Civil Construction’s engineering team was able to design-build a cost-effective solution that was able to save our client time and money.
Today we are in Downtown St. Louis at the proposed addition to Ballpark Village. Ballpark Village is a dining and entertainment district adjacent to Busch Stadium 3 where the St. Louis Cardinals play in downtown St. Louis, Missouri, occupying the site of the previous Busch Stadium. This next phase of development includes 700,000 square feet for a 29-story residential tower, a 10-story office building, an 8-story hotel, and a 3-story retail and entertainment building. We are installing Vibratory Stone Columns for ground improvement on the proposed site so that the load requirements for the structure can be met. Vibratory Stone Columns are used to mitigate settlements and increase the bearing pressure of the soils. What’s unique about this job is that the subsurface soils vary from soft silts to clays with urban fill depths varying greatly across the site with the deepest urban fills being approximately 20 feet in depth. These urban fills consist of primary clay soils with varying amounts of concrete debris and rubble as the location of this job site was once Busch Stadium 2. Due to the concrete debris in these urban fills, we cannot drive the vibratory stone column flot through the soils to the required vibratory stone column depth. For this reason, we have a drill rig pre-augering the holes to allow the construction of the vibratory stone columns.
Helitech Civil Construction Division installed pre-drilled vibratory stone columns and vibratory concrete columns for a fitness center in the Chicago suburb of Oak Brook, IL. This video highlights the bottom feed system used on the VSCs.
Helitech Civil Construction Division installed pre-drilled vibratory stone columns and vibratory concrete columns for a fitness center in the Chicago suburb of Oak Brook, IL. This video highlights the VCCs installed.
Helitech Civil Construction Division installed pre-drilled vibratory stone columns and vibratory concrete columns for a fitness center in the Chicago suburb of Oak Brook, IL
