CHANCE® Helical Tieback Anchors

CHANCE Helical Tieback Anchors LogoWhat is a Tieback Anchor?

Tieback Anchors are retaining wall anchoring systems used to horizontally reinforce and stabilize permanent and temporary structures subjected to lateral loads from earth and water.

Helical tieback anchors are used in conjunction with a variety of earth retaining systems such as sheet piles and soldier piles in order to provide additional lateral resistance beyond what is achievable by a cantilevered wall. The success of the helical anchor tieback system dates back to decades of similar use of CHANCE® Anchors in the electric utilities industry. Capacities up to 200,000 lbs. per anchor are obtainable with this quick and cost-effective helical tieback system.

What Are the Dimensions of a Tieback Anchor?

The common sizes of tieback anchors are dependent on several factors. Chance helical lead sections and extensions are typically available in lengths of three, five, or seven feet, with single or multi-helix configurations. Project requirements and site conditions determine the required shaft size and diameters of the helix configuration; helical plate diameters are typically 8”,10”,12”, or 14”.  

The soil properties and target capacity (in kips ultimate) are the biggest determinants of the configuration, install angle, and overall anchor length to use. The multiple factors that go into determining the right product for the job can seem overwhelming, but our helical experts can assist you with specifications, pricing, and design assistance for your upcoming tieback project.

Nothing but advantages

For predictable, cost-effective, and quick tieback installation, nothing beats a helical wall anchor. CHANCE® Helical Tieback Anchors are reusable and save labor, keeping crews, equipment, and costs minimal. Without the need for grout or concrete, you won’t have to wait for curing to post-tension the anchor, and there's no need for de-watering a site with high water.

When you control torque, you control capacity.

Helical tieback anchors are installed into retained soil with commonly available hydraulic rotary drilling equipment. Once the minimum length is obtained, the capacity is determined by reading the installation torque and correlating it to the holding capacity ratio of the soil strength. Once the specified capacity is obtained, the helical tiebacks are then immediately tensioned and tested without the need for curing time or spoils cleanup, saving a tremendous amount of project time and cost.

CHANCE Helical Tieback Installation Diagram

Advantages of utilizing CHANCE® Helical Tieback Anchors in your earth retention applications:

  • Maximizes flexibility with changing soil conditions
  • Can install with readily available construction equipment
  • No spoils to remove
  • No concrete trucks or grout pumps needed
  • Predictable capacity proportional to installation torque
  • Installs in any weather condition
  • Immediate proof testing and tension loading
  • Minimizes labor costs
  • Retaining wall anchors can be extracted for use on future projects
  • Installs in limited access areas

Working on a design project using helical piles and anchors? HeliCAP™ is a free civil engineering software platform that helps calculate capacity requirements for CHANCE® helical products. Control for soil parameters, environmental variables, and other essential criteria to select the appropriate pile/anchor size needed for your individual project requirements.

Helical Tieback Anchor Applications

Helical Tieback Anchor Case Studies

Request a Quote

Have questions about any of our foundation Helical Tieback Anchor products? Ready to get started on your next project? Looking for expert advice? Request a quote now to speak with our professional team of experts about specifications, pricing, and any additional questions you may have. We’ll get back to you within one business day.