Structural Connections:The various connection details that attach micropiles to structures.

Soil/Rock Load Transfer Mechanism: The various means by which the load is transferred from the pile shaft to the soil or rock bearing strata.

Design Load: The working load of the pile. Test piles are usually tested to two times the static design load.

• Pushed or Driven
• Compaction Grouted
• Jet Grouted
• Post Grouted
• Pressure Grouted
• Drilled, End Bearing

• Supporting New Loads in Congested Areas
• Seismic Retrofit
• Arresting Structural Settlement
• Resisting Uplift/Dynamic Loads
• Underpinning
• Excavation Support in Confined Areas
• Reticulated Pile Wall

• Soil characteristics at pile shaft/soil interface
• Rock at pile tip

1. Geotechnical study
2. Determine load to be supported
3. Design pile-to-structure connection
4. Design pile-to-soil or rock load transfer
5. Develop a pile testing program

• Drilling holes, 2 inch to 12 inch diameter
• The construction of a pile shaft consisting of structural steel pipes, grout, steel sections and/or placement of reinforcing steel, as required by design
• The filling of the hole with high-strength cement grout

• High-performance
• Design loads from 3 to 500+ tons
• Can be readily designed for tension/uplift loads
• Appropriate for a wide range of ground conditions
• Suitable for low headroom and restricted access
• Low noise and vibration
• Can penetrate obstacles