Helical piers are popular construction foundations because of their ease of installation and low soil disturbance. We refer to them as helical or screw piles, which are deep foundation solutions for building newer foundations or repairing existing ones.
Helical piles differ from traditional foundations as we can build them on both hard and soft soil surfaces requiring no concrete. These are best for constructing residential, commercial, and industrial applications. They are easy to install and construct on both temporary and permanent structures.
Types of Helical Piers
There are two patented types of piers used across the globe; round shaft and square shaft helical piers.
Round shaft helical piers are used in compression situations. Round shaft helical foundation piers have a steel tube shaft with a hollow circular cross-section. They have a higher section modulus and bending capacity.
Square shafts are designed for tension situations. These square shaft helical piers have great strength, better capacity to torque ratio. They are best for new constructions on firm soils compared to muddy or rocky surfaces.
How Do Helical Piers Work?
Helical pier foundation pins are made of steel that contains helices just like screws. These helical pairs are used to support structures where soil conditions are challenging, making it hard to set up a traditional Foundation system made of concrete. The steel structure helps it to be easier to build a solid foundation on soft or hard surfaces with the help of a hydraulic system.
Helical piers are great for building solid foundations by inserting them directly into the ground after excavating the topsoil. Helical screws are installed vertically into the soil surface but can also be used in conjunction with various foundation attachment brackets along with existing structures.
Advantages of Helical Piers
- Helical piers are great for building strong and stable foundations in any type of challenging soil, including sand and mud.
- They are quick to install without the help of any special equipment such as cranes.
- Helical pile foundations can be loaded immediately after installation, as they require no waiting time for concrete or other materials to set or harden.
- These do not cause any damage to the environment and require less labor force compared to the traditional installation systems.
- They can withstand any type of bad weather, including frost and storm, as they are weatherproof and corrosion-resistant.
- Helical piers are easy to transport and install, which makes it a great cost-effective way to build long-term foundations that can withstand the test of time; adding to both economic and environmental friendliness.