Foundation problems can lead to serious structural damage if not addressed early. One of the most common questions we hear at Foundation 1 is whether push piers or helical piers are the better option for stabilizing a foundation, especially in basement applications.
Both systems offer reliable support, but each has specific use cases depending on the weight of the structure, soil conditions, and site accessibility. In this guide, we’ll explain how push piers and helical piers work, highlight their key differences, and help you determine which solution is best for your home.
What are Push Piers?
Push piers are long steel rods hydraulically driven into the ground beneath a foundation. They rely on the weight of the structure to penetrate deep into the soil until reaching a stable layer, often bedrock. Once installed, these piers transfer the weight of the building from unstable soil to the more stable strata below.
Key Characteristics of Push Piers:
- Installation Process: Hydraulic equipment drives the piers into the ground using the building’s weight as a counterbalance.
- Depth Achieved: Typically reaches bedrock or a stable soil layer, ensuring long-term stability.
- Suitability: Ideal for heavy structures that provide sufficient weight to drive the piers deep into the ground.
What are Helical Piers?
Helical piers, resembling large screws, are steel shafts with helical plates that allow them to be screwed into the ground. Unlike push piers, they don’t rely solely on the structure’s weight for installation. Instead, they’re rotated into the soil using specialized equipment until they reach the desired depth and stability.
Key Characteristics of Helical Piers:
- Installation Process: Installed by rotating them into the ground using machinery, independent of the building’s weight.
- Depth Achieved: Can be installed to various depths, depending on soil conditions and load requirements.
- Suitability: Suitable for lighter structures or situations where the building’s weight isn’t sufficient for push pier installation.
Push Piers vs. Helical Piers
Understanding the differences between push piers and helical piers is essential for making an informed decision.
Installation Process:
- Push Piers: Require the weight of the structure to drive the piers into the ground.
- Helical Piers: Installed using machinery that screws them into the soil, independent of the structure’s weight.
Soil Dependence:
- Push Piers: Penetrate through unstable soils to reach bedrock, making them less reliant on the upper soil layers.
- Helical Piers: Their capacity is influenced by the soil they are installed in, as they rely on soil resistance against their helical plates.
Equipment and Evasiveness:
- Push Piers: Can be installed with hand tools in some cases, making them less invasive.
- Helical Piers: Typically require machinery for installation, which might necessitate more space and cause more disturbance to the surrounding area.
Cost Considerations:
While both systems are effective, the choice between them can influence the overall project cost. Factors such as the number of piers needed, depth of installation, and equipment requirements play significant roles. It’s essential to consult with a foundation specialist to obtain an accurate assessment tailored to your specific situation.
Recommendations Based on Structure Weight
The weight of your structure is a critical factor in determining the appropriate piering system.
- Heavier Structures: For substantial buildings, push piers are often recommended due to their ability to reach bedrock and provide robust support.
- Lighter Structures: For lighter additions, such as sunrooms, helical piers are more suitable. Using push piers in these scenarios might exert excessive force, potentially causing structural issues.
In Summary
Both helical and push piers offer effective solutions for foundation stabilization. The choice between them depends on various factors, including soil conditions, structure weight, and accessibility. At Foundation 1, we prioritize the longevity and stability of your home. For most residential applications, especially concerning basement piers, we often recommend push piers due to their reliability and depth reach. However, every situation is unique. We encourage homeowners to consult with our foundation experts to determine the best solution tailored to their specific needs.
If you’re experiencing foundation concerns, don’t hesitate to contact us for a thorough assessment and personalized recommendation.
