What is the purpose of a helical pile?
What is the purpose of a helical pile?
Helical piles are hollow steel tubes that are used to stabilize structures by anchoring the load to the surrounding ground, much like a driven pile. However, helical piles are screwed deeply into the earth, section by section if necessary.
Are helical piles cheaper than concrete?
Helical piles also have the advantage of being easily removed, reset or reused, unlike concrete which cannot be modified once set. Plus, since helical piles tend to cost less than concrete foundations, they can help keep projects more affordable while providing reliable support.
How much does helical piers cost?
The cost of a helical pier depends on the design, size, and weight of the structure and the adjacent soil conditions. Due to these many variables, an installed helical pier can range in price from $15-$30 per foot. So, a typical 20-foot helical pier can cost between $300 – $600 each.
Can you use helical piles for fence posts?
A fence made with helical piles will remain strong and its foundations will withstand the weather. Solid, stable, straight.
How strong are helical piles?
A helical pile is a deep foundation solution suitable for supporting light and heavy structures. They are engineered to support compressive loads less than 1kN (225 lb) or in excess of 5,000kN (1.125 million lb) – from a small landing to a 32 story tower, helical piles are an option.
What are helical piles?
Helical Piles are advanced to the predetermined (design) bearing strata by rotating the steel shafts with the torque motor attached to the excavator plant/rig. Multiple steel sections are connected via a bolted connection and sections are added to complete the total pile depth.
How to design helical anchors under tension in sand?
The design of deep single-helix Helical Anchors under tension in sands is essentially the same as for compression loading of Screw-Piles in sands. The design steps are: Estimate or determine the design value of friction angle, φ’, from appropriate lab or field tests; Estimate the total unit weight of the sand;
How do you connect the top of the pile to concrete?
On completion, the top of the pile can be connected in various ways to the structure by a direct steel flange plate connection or plate/rebar connection to concrete. Keller is able call upon a wealth of knowledge and experience to offer and successfully deliver the optimum solution.
