Gary Seider, head of engineering with Chance, sits down with a panel of professionals discussing foundation construction and troubleshooting solutions for North America.

Helical Concepts, Inc. prides itself on provided the best steel possible for your projects. Below are various links to accreditations and certifcations awarded to Chance for their outstanding product reliability.

ESR Report

ISO 9001 Certificate

SCI Assessed Certificate

When in doubt, test it.

Helical Concpets, Inc. is proud to provide our pile or anchor testing services to our customers.

Below are testing summaries provided by Chance and Helical Concepts, Inc.

Test Summaries Cohesive Soils

Test Summaries Cohesionless Soils

Helical Pulldown Micropile Test Summary

Generally, a family’s home is their largest investment. One of the best ways to protect that investment is with Chance Helical Piles.

CHANCE manufactured anchors are rated up to 100,000 pounds each. These are available in round or square shafts manufactured from high-strength galvanized steel. Special patented brackets are used to stabilize or lift foundations in distress. CHANCE is the only company with a pre-engineered and manufactured underpinning system evaluated and listed by all the national building code agencies.
•ICC-ES Report # ESR 2794

Once your CHANCE certified installer has received the plan of repair from a qualified design group or individual, he can proceed with the repair. Remember, one of the best investments you can make is to get a soil boring on your property. This will enable the designer to determine what type of anchor and to what depth it must go to stable soil. Usually the installer will excavate a hole at each anchor location wide enough and deep enough to place a bracket under the foundation. The leading section of the anchor with the proper number and size of helices will be installed by a rotary installing machine. Extensions are added until the helices are at the proper depth and the predetermined torque is achieved. At that point the bracket is added, the load is transferred to the anchor, and the building can be stabilized or lifted according to the plan of repair.

Applications for guyed structures, self-supporting towers, structures substations, and switching stations are all part of the CHANCE T/C (tension-compression) foundation and guy anchor product line. Applications in sensitive areas, high water tables, difficult access as well as normal soils make the CHANCE T/C foundation a priority in transmission line construction.

The CHANCE guy anchor, Type SS, made with A. B. Chance proprietary high strength steel can have capacities to 200,000 pounds tensile load. These anchors have been field proven over decades of service under the severest conditions. Please click the links below for the Chance “Encyclopedia of Anchoring.”

Section A

Section B Anchors

Section B Tooling and Installation

Section C

A helical anchor/pile is an extendable deep foundation system with helical bearing plates welded to a central steel shaft. Load is transferred from the shaft to the soil through these bearing plates. Central steel shafts are available in either Type SS (Square Shaft) series or Type RS (Round Shaft) series. The Type SS series are available in 1-1/4″ to 2-1/4″ square sizes. The Type RS series are available in 2-7/8″ to 4-1/2″ diameter sizes. Type SS-RS combinations are also available for compression applications in soil conditions where dense/hard soils must be penetrated with softer/loose soils above the bearing strata. The Helical Pulldown®Micropile series is also used in applications similar to those requiring the use of the Type SS-RS combinations.

Segments or sections are joined with bolted couplings. Installation depth is limited only by soil density and practicality based on economics. A helical bearing plate or helix is one pitch of a screw thread. All helices, regardless of their diameter, have a standard 3″ pitch. Being a true helical shape, the helices do not auger into the soil but rather screw into it with minimal soil disturbance. Helical plates are spaced at distances far enough apart that they function independently as individual bearing elements; consequently, the capacity of a particular helix on a helical anchor/pile shaft is not influenced by the helix above or below it.

Click on any of the tiles at the top of the page to learn more about this product’s technical specifications, download drawings, or feel free to contact us with any questions you may have.

Please watch an in depth discussion concerning tension and compression tests involving CHANCE Helical Piers and Anchors.

The largest outdoor shake table in the world demonstrated the seismic test of helical piles lead by Dr. Amy Cerato, P.E. at the University of California, San Diego Jacobs School of Engineering.

The Atlas Resistance® Pier is a manufactured, two-stage product designed specifically to produce structural support strength. First, the Pier Pipe is driven to a firm bearing stratum; then the lift equipment is combined with a manifold system to lift the structure. The Atlas Resistance® Pier System procedure provides measured support strength. Atlas Resistance® Piers are spaced at adequate centers where each pier is driven to a suitable stratum and then tested to a force greater than required to lift the structure. This procedure effectively load tests each pier prior to lift and provides a measured Factor of Safety on each pier at lift.