Ground Screws
Screw foundations defined by shaft, tip, thread, and head geometry for the specified structure and ground conditions.
Browse Ground Screws & Helical Piles
Helical Piles
Lead sections with discrete helix plates and a defined shaft, selected with installation, structural, and geotechnical criteria.
Pile Extensions & Couplings
Extension shafts and couplings matched to the lead section, connection dimensions, torque rating, and installation tooling.
Pile Heads & Brackets
Pile caps, plates, and brackets that connect the shaft to a post, beam, or supported frame through an agreed load path.
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Choose shafts, extensions and head connections
Ground screws
Ground screws combine the steel shaft, helical or threaded geometry and the top connection required by the supported structure. Compare the actual product drawing rather than the product name alone.
Helical pile leads
A pile lead defines the shaft and helix arrangement that enters the ground. Load direction and the site design identify the required assembly.
Extensions and couplings
Extension shafts and joints continue the selected lead system. Mating geometry, bolt details and engagement must belong to that same assembly.
Heads and brackets
Head plates, caps and brackets connect the installed shaft to the support. Hole patterns, elevations and the supported member determine the connection.
| Component | Catalog dimension (in.) | Metric conversion (approx. mm) | Connection or selection detail |
|---|---|---|---|
| Round pipe shaft | 2-7/8 OD × 0.217 wall | 73.03 OD × 5.51 wall | Match the extension shaft and drive tooling |
| Helix plate | 3/8 thickness | 9.53 thickness | State blade diameter, count, pitch and spacing |
| Helix plate | 1/2 thickness | 12.70 thickness | Keep the selected plate thickness with the lead drawing |
| Coupling bolt | 5 length × 0.75 diameter | 127 length × 19.05 diameter | Match the sleeve, hole pattern and specified fastener |
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Foundation Design and Load-Test Requirements
UFGS 31 63 26.60Helical-pile specification frameworkThis helical-pile guide organizes the design, component supply, installation records and verification plan for the specified project.
ASTM D1143/D1143MStatic axial compression testingUsed to measure axial movement under compressive loading. The foundation engineer specifies the test program and interprets the results for the project.
ASTM D3689/D3689MStatic axial tension testingAddresses tensile testing for uplift response. A compression result alone does not demonstrate the required uplift behavior of the proposed foundation.
ASTM D3966/D3966MStatic lateral testingAddresses lateral load and displacement response. Match the tested arrangement and head condition to the foundation question being evaluated.
ASTM A123/A123MSpecified galvanized steel componentsUse the relevant material category and measured thickness when this coating specification is selected. Soil durability also needs an exposure and design-life assessment.
Factory requirements for matched foundation components
Shaft preparation
Each component mark identifies shaft section, grade, wall or bar size and cut length. Straightness and end preparation follow the selected coupling and drive connection.
Thread or helix fabrication
The approved lead drawing defines thread or helix dimensions, orientation and attachment. Those features keep different lead configurations identifiable through fabrication and packing.
Extension and coupling fit
The system drawing defines mating dimensions, hole alignment, sleeve engagement and fasteners. Where connection tolerances are critical, the order can include a representative fit check against those specific parts.
Heads and corrosion treatment
Head plates and brackets follow the agreed connection pattern and finish schedule. Specified weld checks, galvanizing details and permitted repair areas stay attached to those fabricated items.
Pile-schedule packing
Leads, extension lengths, heads and hardware have separate marks and counts on the pile-schedule packing list. Protection covers helix edges, threads and finished mating surfaces.
Trace components from fabrication to installation records
Records by responsibility
Factory documentsMaterial identity, component dimensions, welding and corrosion-protection records cover the supplied parts.
Installer recordsLocation, installed depth, shaft sections and installation readings document the work completed at each foundation.
Designer and test acceptanceThe project design sets the capacity criteria, trials and any load testing used to accept the installed foundation.
The handoverUse foundation and component references to connect the factory supply list with the site installation record.
Agree who provides each record
- Approved pile schedule, component drawings, and revision list
- Specified shaft, helix, plate, and fastener material records
- Dimensional and required weld-inspection reports
- Coating inspection and accepted repair records where specified
- Installer's calibrated torque, depth, and exception records when required
- Engineer-approved test results and installation acceptance records when required
Foundation selection and steel component references
Procurement across mixed soil zones
Define foundation releases around the site investigation, accepted design and installation conditions.
Steel Plates
Review plate grade and cutting requirements for drawing-defined helix plates, pile heads, and brackets.
Galvanized Steel Pipe
Compare steel tube and galvanizing specifications while keeping ground-exposure durability requirements separate.
Ground screw and helical pile purchasing questions
How should I request pricing when the final extension quantity is uncertain?
Separate the planned lead sections and heads from optional extension lengths and coupling hardware. Give the preliminary depth assumptions and requested delivery sequence. This allows the quotation to distinguish committed quantities from additions without implying that an estimated depth is the final installation criterion.
Can removed screw foundations be installed again elsewhere?
Removal does not establish suitability for reuse. The new project needs a review of the component's condition, dimensional changes, coating damage, connection wear, and service history, as well as different loads and soil. Reuse should follow an explicit inspection and engineering acceptance route.
Can I buy only replacement pile heads or extensions?
Yes, submit the required component scope for review with the mating dimensions, system identification, material requirements, and quantities. A part that fits physically still needs the required connection and torque capacity. Identify any evaluation or warranty restrictions associated with the original system.
Request a screw-foundation component quotation
Send your screw-foundation component list or available drawings with quantities and destination. Identify the mating system and any preliminary site or design inputs. We will separate the leads, extensions, couplings and heads in the quote.
- Component scope and interface review
- Itemized pricing basis for leads and extensions
- Agreed inspection, packing, and document requirements