Helical Piers
WHAT IS A HELICAL PIER?
A helical piling is a circular, hollow, steel pipe section (shaft) with one or more tapered steel plates (helixes) welded to the shaft. The plates are shaped as a helix with a carefully controlled pitch, which allows the pile to be inserted into the ground with minimal soil disruption. The central shaft is used to transmit torque during installation and to transfer axial loads to the helical plates upon foundation loading. The central shaft also provides a major component of the resistance to lateral loading. The pile is directed toward the soil andmechanically rotated with constant downward pressure, advancing the pile into the soil. Once installed, the pile has bearing capacity in both tension and compression in the subsurface by transferring the structures load to the bearing stratum. The pile installation angle can range from vertical to nearly horizontal. Helical pile foundations are also referred to as anchors, screw anchors, and/or torque piles
WHY USE HELICAL PIER
The installation of helical piers is relatively quite and creates very little vibration to the surrounding area when compared to other pile installation method. Making it ideal for use in
- ENVIRONMENTALLY SENSITIVE AREAS
- HIGHLY POPULATED AREAS
- INSTALLATIONS CLOSE TO UNSTABLE FOUNDATIONS SUCH AS HERITAGE RUBBLE FOUNDATIONS
- ALMOST NO SPOILS TO TRUCK AWAY
HELICAL PIER USES
- NEW FONDATIONS IN AREAS WHERE SOLID BEARING IS TO FAR DOWN TO MAKE A CONVENTIONAL FOUNDATIONCOST EFFECTIVE
- SHORING UP AND LEVELLING EXISTING FOUNDATION FOR RESIDENTIAL AND COMERCIAL
- TIE BACKS FOR BANK STABALLIZATION
- MOORING POINTS
- SEISMIC UPGRADES
- BOARDWALK FOUNDATION
- CABLE TIE DOWNS
- DECK POST BASES
GEOTECHNICAL AND STRUCTURAL ENGINEERING
Active Enterprises Ltd. strongly advises our clients to use structural and geotechnical engineers for assistance in designing their helical pier foundations. We work with professionals in these fields on a regular basis and would be glad to refer one to you if desired.
