Solar
112k piles
200-MW utility-scale array, AZ
112,000 piles. Installed 1,400/day per crew. No concrete, no cure — schedule held within one day.
— Technical
Engineering resources.
Specifications, capacities, certifications, the science of inertia welding, downloadable documents and the case studies behind them.
— Specifications
System specs at a glance
- Shaft sizes
- 2.875" · 3.5" · 4.5" · 5.5" · 7.0" · 8.625" · 10.75" OD
- Steel grade
- ASTM A500 Grade B / C — High-strength tubular
- Helix sizes
- 8" · 10" · 12" · 14" · 16"
- Helix plate
- 1/2" standard · thicker on request · true-pitch formed
- Coating
- Hot-dip galvanized to ASTM A123 (≥ 3.9 mil)
- Capacity
- 30,000 – 250,000 lb axial, project-engineered
- Torque correlation
- Qu = Kt × T, recorded pile-by-pile
- Service life
- 75+ years typical, with engineered sacrificial allowance
- ICC-ES
- ESR-3032 listed (piles & piers)
- Quality system
- ISO 9001 audited · destructive batch testing
Patented
— Inertia weld
A forged, full-strength joint.
Solid-state friction welding produces a continuous forged grain across the helix-to-shaft joint — no filler metal, no porosity, no heat-affected zone. The cornerstone of our system.
— Documents
Everything you need for submittal.
Engineering Manual
Complete design manual with capacity tables, torque correlation factors and worked examples.
Request PDFICC-ES ESR-3032
Evaluation Service Report covering both new-construction and underpinning applications.
DownloadInertia Weld Study
Tensile and shear test data comparing inertia-welded vs. fillet-welded helix joints.
Request PDF— Case studies
Proof in the ground.
Commercial
0 downtime
Mid-rise hospital, MN soft clay
Foundations engineered around an active facility. Vibration-free install allowed adjacent OR to stay operational.
Industrial
175k lb
Refinery tank farm, TX
Heavy axial loads on liquefiable soil — torque-correlated to verify 175k lb working capacity pile-by-pile.
— FAQ
Frequently asked.
— Engineering desk
Need a doc, a spec, or a second opinion?
Our engineering desk answers within one business day. Send a soil report, a load, or just a question — we'll get you an answer that lands.
