Micropiles — deep foundations & underpinning
Micropile specialists for foundation strengthening and structure stabilisation.
Micropiles are a benchmark solution for strengthening foundations, underpinning and stabilising existing structures. Sirianni Travaux works on technically demanding sites, for both private and professional clients, even where access is difficult.
Foundations tailored to the constraints of the ground and the building
What is a micropile?
Micropiles are deep foundation elements drilled into the ground to take up a structure’s loads and transmit them down to more resistant layers. They are particularly used for underpinning, on existing buildings, extensions or ground with insufficient bearing capacity, without the need for heavy earthworks.
A micropile is a small-diameter pile, drilled and anchored deep into the ground. It is reinforced and then grouted to take up the loads and ensure the stability of the structure. This technique is ideal where access is restricted, the ground is heterogeneous, or existing foundations need to be strengthened without demolition.
Why choose micropiles for your works?
Micropiles provide a high-performance solution for strengthening foundations and taking up loads.
A solution suited to complex ground
Micropiles can reach more resistant soil layers, even in heterogeneous ground.
Efficient load transfer
They transfer the structure’s loads down to stable bearing horizons.
Precise, safe execution
Drilling and grouting are carried out with rigorous control at every stage.
Ideal for underpinning
Micropiles strengthen existing foundations without heavy demolition.
Expertise in special foundations
Every solution is designed to suit the ground, the structure and the site constraints.
A durable, reliable solution
Micropiles ensure the long-term stability of structures, even where ground conditions are challenging.
Our expertise
Know-how in special works
Sirianni Travaux carries out micropile works on projects that call for full mastery of deep foundation techniques.
- Micropiles and deep foundations
- Underpinning
- Strengthening of existing structures
- Soil strengthening
- Difficult-access works
How a Sirianni Travaux project unfolds
Ground and structure assessment
Analysis of the existing foundations, the ground and the loads to be taken up.
Design of the micropile solution
Sizing, depth and execution methodology.
Installation of the micropiles
Drilling, placement of the reinforcement and controlled grouting.
Final checks and securing
Verification of the bearing capacity and stability of the structure.
Frequently asked questions
What is a micropile?
When are micropiles used?
What is the difference between micropiles and traditional piles?
Can micropiles be installed on an occupied site?
Are micropiles compatible with other techniques?
Do micropiles guarantee long-term stability?
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Get a tailored assessment for your special works. Tell us about your disorder or your project — we will get back to you after analysing the structure and its surroundings.