Micropiles

Foundation and anchoring elements in all types of soil & rock

Micropiles are usually drilled or driven piles with diameters of up to 250 mm and individual load-bearing capacities of up to 1,500 kN. They are made of steel, concrete, wood or cast iron and can usually also be manufactured where space is limited.

Implementation

Drilled
Both cased and uncased boreholes are possible during production - in each case adapted to the diameter of the pile to be installed. Once the load-bearing element has been installed, the borehole is filled with cement slurry and the skin friction surface is increased by post-grouting.

Rammed
The first pipe section is fitted with a ramming shoe and driven in with high-speed impact hammers. The next pipe sections are then inserted into the conical socket of the previously driven pipe. The final pile depth can be determined based on the penetration resistance.

Examinations

Tensile test
Pressure tests

Applications

Foundation reinforcement of existing structures
Deep foundations (bridge, road, sewer, building construction and more)
Uplift protection
Excavation support (pipe pile wall)

Technical data

Drilling depths	usually up to approx. 30 m (greater depths possible)
Diameter	90 to 250 mm
Load capacity	100 to 1500 kN
Equipment	from 0.25 t portable carriage to 30 t crawler drilling rig