Screw Pile Capacity Charts (kN)
Low Headroom • Limited Access Areas • High Water Tables • Tree Root Protection • Temporary works
Reliable Screw Pile Capacity Data
for Helical Pile Design, Engineering & Installation
Helical screw piles are a proven, high-performance solution for foundations across the UK — especially where ground conditions are challenging. Our screw pile bearing capacity charts provide quick, dependable load information for both compression and tension applications, helping engineers, contractors, and structural designers specify the correct pile size with confidence.
Whether you’re working in low-headroom environments, restricted access sites, high water tables, tree-root protection zones, or delivering temporary works, helical piles provide speed, versatility, and a clean installation process with minimal disruption.
Why Bearing Capacity Matters
Accurate load information is essential for safe, compliant and efficient foundation design.
Our screw pile load chart will help you determine:
- Ultimate and allowable load capacities (kN)
- Compression and tension load performance
- Recommended pile types for specific soil conditions
- Torque-to-capacity correlations
- Suitable pile configurations for varying structural demands and site constraints
- Depth requirements for various structural loads
● SQUARE SHAFT (SS) HELICAL PULLDOWN MICROPILES (HPM)
GEOTECHNICAL CAPACITIES| Soil Type | Product Family | Axial Compression / Tension Capacity* | |||
|---|---|---|---|---|---|
| “N60”- Value* Cohesive | “N60”-Value* Non-Cohesive | Square Shaft mm, Micropile diameter mm | Torque Rating Nm | Ultimate Capacity kN | Allowable Capacity kN with FOS 2 |
| 25 – 35 | 25 - 30 | SS5-38mm,160mm | 7730 | Upto 508 | Upto 254 |
| 25 - 40 | 25 - 35 | SS150-38mm,160mm | 9500 | Upto 624 | Upto 312 |
| 35 - 50 | 35 -40 | SS175-44mm,180mm | 14200 | Upto 934 | Upto 467 |
| 50 - 70 | 40 - 60 | SS200-51mm,180mm | 21,700 | Upto 1424 | Upto 712 |
| 70 - 90 | 60 - 80 | SS225-57mm,180mm | 28475 | Upto 1864 | Upto 932 |
| CHART: CHANCE Helical Pile / Anchor Load Capacity, Table 7-4 FROM: CHANCE Technical Design Manual, Edition 3 * Based on torque rating and well-documented, correlations with installation torque The HPM is a compite pile delivering end bearing and friction capacity, therefore the kN capacities detailed are dependent on the friction capacity encoured and depth of pile 
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These charts are backed by extensive field testing and decades of engineering development — giving you reliable data for practical real-world design.
World-Leading CHANCE® Helical Piles
Ground Sun design, supply and install CHANCE® Helical Piles, globally recognised as the most tested and trusted helical foundation system in the world, CHANCE Piles are accepted as the Industry standard, and an excellent option for many foundation designs.
- TRUST – Over 100 years of engineering expertise and global installation experience.
- QUALITY – Manufactured under ISO 9001 certification.
- TRACEABILITY – Pile types for specific soil conditions.
- SERVICE – Full project support, training, and engineering guidance.
- ADAPTABLE – Customisable pile designs for non-standard or complex projects.
- PRODUCT RANGE – Round Shaft (RS), Square Shaft (SS), Pulldown Micropiles, instant foundations and rock anchoring systems.
- SUSTAINABLE – Made from 98% recycled steel, removable, reusable, and exceptionally low-carbon.
Get the Right Helical Pile for Your Project
Get a fast no-obligation quote today and discover how helical screw piles can save you time, money, and disruption on your next project.
Need help? Speak Directly to our
Design Engineer
If you’re unsure which helical pile is right for your project or need help interpreting the screw pile capacity charts, our Design Engineer is ready to help.