Screw Piling Costs Compared to Bored Pier Costs
Comparing the Costs of Bored Piers and Screw Piling: Which Foundation Solution is Right for Your Project?
Choosing the right foundation system is crucial for structural integrity, cost efficiency, and overall success when planning a construction project. Two standard deep foundation solutions are bored piers and screw piling. Both have advantages, but their costs vary significantly depending on project requirements, soil conditions, and installation complexity.
Bored Piers: Strength and Stability at a Cost
What Are Bored Piers?
Bored piers (or drilled shafts) are cylindrical concrete foundations installed by drilling holes into the ground, reinforcing them with steel, and filling them with concrete. They are commonly used in projects requiring high load-bearing capacity and stability.
Cost Factors
- Excavation & Drilling – Requires heavy machinery, which can be expensive.
- Material Costs – Concrete and steel reinforcements add to the overall cost.
- Labour Intensity – Installation is labour-intensive, requiring skilled workers.
- Site Preparation & Spoil Removal – Excavated soil and debris must be removed, adding to disposal costs.
- Weather Dependency – Wet conditions can delay installation, increasing labour and equipment costs.
Estimated Cost Range
Typically, it ranges between $350 - $800 per linear meter, depending on soil conditions and project complexity.
Screw Piling: Cost-Effective and Efficient
What Is Screw Piling?
Screw piles are steel shafts with helical plates that are twisted into the ground like screws. They provide strong load-bearing support without the need for extensive excavation.
Cost Factors
- Minimal Excavation – No soil removal means lower disposal and preparation costs.
- Faster Installation – Installation is quicker than bored piers, reducing labour costs.
- Material Costs – Typically lower than concrete, but specialized steel piles can increase costs.
- Versatility – Works well in various soil conditions, even in soft or waterlogged areas.
- Less Equipment – Requires a smaller crew and lighter machinery than bored piers.
Estimated Cost Range
Generally, it ranges from $80 - $600 per linear meter, depending on pile size and soil conditions.
Indicative Cost Comparison Summary
| Factor | Bored Piers | Screw Piling |
|---|---|---|
| Installation Time | Slower | Faster |
| Excavation | Required | Minimal |
| Material Costs | High (Concrete & Steel) | Moderate (Steel Piles) |
| Labour Costs | Higher | Lower |
| Site Disruption | Higher | Lower |
| Weather Impact | Delays Possible | Minimal Impact |
| Overall Cost | $350 - $800/m | $80 - $600/m |
Which Option Is Right for Your Project?
If your project demands a high load-bearing and lateral load capacity, bored piers may be the best choice despite their higher cost. However, if speed, cost savings, and minimal site disruption are priorities, screw piling is often the more economical solution.
At Koble Constructions, we specialize in foundation solutions tailored to your specific needs. Contact us today for expert advice and a detailed cost estimate for your project.