Arizona Helical-Piers, Corporation

OVERVIEW (*Click on highlighted text to see figures)

Power-installed helical-pier systems have proven to be extremely reliable while offering predictable holding capacities at economical installation cost. Moreover, their unique advantages have led to a growing range of compression and tension anchoring applications. Loads as high as 200 lbs. per pier are achievable in certain soils. Special terminations i.e., new construction, underpinning, tieback and anchoring allow simplified load transfer from the structure to the piers.

As an engineered solution to foundation settlement, the patented A.B. Chance helical anchoring systems have been proven over and over as a reliable and economical method of foundation stabilization. This process (figure 1) is not only cost effective, it is controlled in all aspects, predictable in results and when properly installed, guaranteed against failure.

Over and over again, as foundations are repaired in the Phoenix Metropolitan area, as well as other parts of Arizona, AHPC's satisfied customers have commented how they wished the piers would have been required during the initial construction of their home/building. Helical anchors in new construction are being specified more and more by architects and engineers alike throughout the world. California and others are beginning to realize the merits of the Helical-Piers installed during new construction in areas prone to earthquakes. In Arizona alone, there are many cases of newly constructed homes/buildings in litigation over settlement problems due to improper soil compaction, expansive soils, improper drainage design, bad landscape designs, etc. Millions of dollars in legal fees alone are being spent just to defend such cases. Installation of Helical-Piers during new construction is a fraction of the cost as compared to repairs and/or settlements made after occupancy. Below (figure 2), note a simple drawing of a helical-pier in a new construction design. Engineering test reports, which reflect compression load tests performed on the Helical-pier in a new construction design. Engineering test reports, which reflect compression load tests performed on the Helical-Pier and load cap design, are available upon request. Other (Click here for figure 2a) products for structural slabs and equipment pads are available.

Figure 3 reflects a Helical anchor in tension. Helical-Piers are well known for their tension capacities. A.B. Chance Helical-Piers, in tension, have a 40 year success history. These piers are perfect for new, temporary or remedial use on existing retaining walls. This system allows you to immediately load your tieback after installation. No waiting time is necessary for grout or concrete to cure. As with all Helical-Piers, predictable holding capacities are insured once installation torque is achieved.