Foundations

The Kiewit Foundations Co. self-performs complex geotechnical projects across North America. We deliver creative, cost-efficient solutions that are responsive to each project’s specific site conditions. We utilize value engineering and constructability reviews, and our depth of expertise to offer constructible solutions that optimize budget and schedule. We perform these operations with our fleet of specialty equipment and the management resources of one of the top builders in the country.

About Us

The Kiewit Foundations Co. self performs complex geotechnical projects across North America. We deliver creative, cost-efficient solutions that are responsive to each project’s specific site conditions. We utilize value engineering and constructability reviews, and our depth of expertise to offer constructible solutions that optimize budget and schedule. We perform these operations with our fleet of specialty equipment and the management resources of one of the top builders in the country.

With a strong local presence and access to a vast network of industry experts, The Foundations Group can quickly mobilize and help design the best solution and value for any project. From the smallest jobs to the multi-billion dollar projects we build, our resources and experience ensure clients receive the highest-quality, hands-on services they’ve come to expect.

Safety

At Kiewit, nothing is more important than Safety.  Out craft-led safety programs and commitment at all levels of our operations ensure our focus is on what matters most:  that nobody gets hurt.  This commitment to excellence extends to our quality, environmental and compliance performance – which is how we drive successful projects for our clients.

Our Values

People – We care for the well-being or our people and help them grow in their ability to be successful.

Integrity – We conduct our business and personal affairs with the highest levels of integrity and take responsibility for our actions.

Excellence – We commit to excellence in all we do with a focus on quality and continuous improvement.

Stewardship – We preserve Kiewit’s unique culture to build a stronger organization for future generations of employees.

Careers

Aside from our projects, we take great pride in building our people – we are not only building the future of our country, but our employees as well – and ensuring a safe working environment. We inspire you to seize opportunities and achieve career-long goals. If you are an individual with a passion to work hard, a desire to be a part of a dynamic team and have a strong drive for growth, then this is the place for you! Are you ready to join the team?

Click here to see available jobs.

Services

The Kiewit Foundations Co. provides a wide array of services for all types of ground improvement and deep foundations services. We have the knowledge, experience and equipment that is required for this specialized work and we can offer cost-effective solutions for any type of project.

  • Market Capabilities – The Foundations Group has a proven experience at every stage of the project development life cycle. The earlier that we can get involved in the project development and design, the more value Kiewit can provide clients.
  • Delivery Methods – Constructions / Design-Build / CM-at-Risk / CM-for-Fee / Design-Build, Operate, Maintain
  • Procurement Models – Traditional / A+B / Best Value / Negotiated
  • Services – Preconstruction / General Construction / Building Information Modeling / Construction Management / Engineering / Self-Performed Scopes of Work / LEED

Deep Foundations

Deep Foundation work includes three main areas: Drilled shafts, Micorpiles and Miscellaneous Pile Methods. All three of these sections are outlined below along with links to some of our work. If you are looking for more information, be sure to visit our contact us to request more information.

Drilled Shafts

Drilled shafts (also called caissons, drilled piers or bored piles) have proven to be a cost-effective, excellent performing, deep foundation system, that is utilized worldwide. Typically they are used for bridges and large structures, where large loads and lateral resistance are major factors.

Advantages

  • Economics
  • Minimizes pile cap needs
  • Slightly less noise and reduced vibrations
  • Easily adaptable to varying site conditions
  • High axial and lateral loading capacity

Micropiles

Micropiles (also minipiles of pin piles) are a deep foundation system constructed using casing and threaded bar in a variety of sizes. Micropiles are typically used for small diameter shafts and work well in tight working conditions and low overhead environments.

Advantages

  • Tight working conditions and low overhead environments
  • Slightly less noise and reduced vibrations
  • Easily adaptable to varying site conditions
  • High axial and lateral loading capacity

Others

There are many other deep foundation options in the industry including but limited to Augur Cast Piles, Helical Piles, Pipe or H-Piles, and many others. We at Kiewit can provide many of these services and discuss what options work best with your Project’s needs.

Advantages

  • Can work with tight working conditions and low overhead environments
  • Can have less noise impacts and reduced vibrations if required
  • Easily Adaptable to just about an project needs
  • Contact us for more information

Earth Retention Systems

Earth Retention Systems include three main areas: Slurry Walls, CBSP Walls and Secant Pile Shafts. All three of these sections are outlined below along with links to some of our work. If you are looking for more information, be sure to visit our contact us to request more information.

Slurry Walls

A Slurry Wall is a technique used to build reinforced concrete walls in areas of soft earth close to open water or with a high groundwater table. This technique is typically used to build diaphragm (water-blocking) walls surrounding tunnels and open cuts, and to lay foundations.

Advantages

  • Provides strong watertight walls
  • Minimizes settlement of adjacent structures
  • Provides underpinning
  • Proven technology

CBSP Walls

Cement Bentonite Soldier Pile Walls, also known as CBSP, is a cost-effective means for watertight support of excavation that has little to vibration to adjacent structures. CBSP is typically used for temporary open-cut structures.

Advantages

  • Cost Effective method for watertight temporary support of excavation
  • Minimizes settlement of adjacent structures
  • Less noise and reduced vibrations

Secant Pile Shafts

Secant piles are drilled shafts constructed in such a way that the shafts overlap each other to form a wall. The construction sequence involves drilling every other shaft and then returning after the concrete has set in the initial shafts to drill and pour the shafts for the secondary piles.  Secant piles are used to build cutoff walls for the control of groundwater inflow and to minimize ground movement.

Advantages

  • Increased construction alignment flexibility
  • Increased wall stiffness compared to sheet piles
  • Can be installed in difficult ground conditions
  • Less noise and reduced vibrations

Ground Improvements

Ground Improvements include five main areas: Aggregate Piers, Vibro Compaction, Cutoff Walls, Grouting and Soil Mixing. All five of these sections are outlined below along with links to some of our work. If you are looking for more information, be sure to visit our contact us to request more information.

Aggregate Piers

Aggregate Piers (also called stone columns or aggregate columns) are a ground improvement method that uses compacted aggregate to create stiff pier elements. Aggregate Piers help increase bearing capacity, shear strength, rate of consolidation, liquefaction resistance and reduces settlement. Typically they are used in sands and unstable soils.

Advantages

  • Rapid Installation
  • Cost Effective compared to other foundation options
  • Creates additional drainage paths
  • Allows for high level of compaction
  • Efficient QA/QC procedures

Vibro Compaction

Vibro Compaction is a ground improvement method that densifies deep cohesionless soils to increase bearing capacity, increase shear strength, reduce settlement, and increase liquefaction resistance. This technique is typically used in cohesionless soils. Applicable soils include clean sands with less than 15% silts and/or less than 2% clay.

Advantages

  • Cost effective compared to other foundation options
  • Effective Above and Below the water table
  • Faster than other foundation options
  • Can increase angle of internal friction by 5-10 degrees

Slurry Trench Cutoff Walls

A Slurry Trench Cutoff Wall is a technique used to restrict horizontal movements of liquids. Construction involves digging the wall under a bentonite or polymer slurry with a long stick excavator or clamshell and replacing the removed material with a low permeability material. The low permeability material is often a mix of cement, bentonite, and soil. This technique is used to control groundwater seepage into an excavated area for temporary or permanent applications. The technique is also used frequently to prevent seepage in dams.

Advantages

  • Efficient QA/QC Procedures.
  • Easy to check depth and confirm that excavated materials are in desired stratum
  • No joints between panels or construction segments

Grouting

There are many types of grouts and grouting techniques used for a variety of applications. We have experience in chemical, permeation, pressure, and curtain grouting. Please contact us to discuss what options work best with your Project’s needs.

Advantages

  • Can work in tight working conditions and low overhead environments
  • Computer monitoring of grouting shows real-time analysis of construction process
  • Can be used in most soil types
  • Can be installed under existing structures

Soil Mixing

Soil Mixing (Also called mass stabilization) is a technology to stabilize and strengthen soils at shallow to moderate depths using a binder material. Mass mixing methods can be used to treat soft clays, peats, sludges, and dredged material. Typical uses for this technique include roadway and railway embankment, and support of structures.

Advantages

  • Can be used to stabilize peat and other soft soils, and to treat contaminated soils
  • Can stabilize large blocks of soil
  • Quicker and less expensive that many other alternatives (such as mass replacement)
  • Lower environmental impact than other solutions
  • Traditional binders of common materials – Portland cement, lime, slag, flyash

Equipment

Kiewit has one of the largest fleets of construction equipment in North America. The Kiewit Foundations Co. has stayed at the forefront of the latest specialized Foundations Equipment to provide an extensive inventory of equipment for every project need. With a strong local presence, we can quickly and conveniently mobilize equipment for any project. Here are just a few of the specialized equipment that we utilize.

Top Drive Rotary Rigs

  • Liebherr LB-44
  • Liebherr LB-36
  • Liebherr LB-28
  • IMT AF-250
  • IMT AF-270
  • Bauer BG-24
  • LoDrill DH60
  • Casagrande B300
  • Casagrande B175

Oscillators / Rotators

  • Leffer VRM 2500
  • Leffer VRM 250 KL

Ground Improvement Equipment

  • McMillan Non-Vibration Stone Column Setup (Casagrande B300 & B175)
  • Bauer TR 75 VibroFlo
  • Betterground BG Vibroflo
  • Pierce Pacific LR 11/105 Long Stick
  • TEC Cutter Soil Mixing

Cranes

  • Liebherr 855 HD Crawler
  • Liebherr 885 HD Crawler
  • Liebherr 895 HD Crawler
  • Liebherr LTR 1100 Crawler
  • Mantis 9010 Hydraulic Crawler

Tooling

  • Speherical Grabs & Clambshells (Various Sizes)
  • Soils & Rock Augers (Various Sizes)
  • Cleanout Buckets & Core Barrels (Various Diameters)
  • Continuous Flight Auger Setup – Liebherr LB44
  • Continuous Flight Auger Setup – Casagrande B300 & B175
  • Cluster Drills (Various Diameters)
  • Center Rock Reverse Circulation Hammer
  • Segmental Casings (Various Diameters)

Contact Us

Foundations Projects