Micropiles are deep foundation elements with a small diameter of up to 300 mm, by means of which loads from the superstructure are transferred to lower-lying, load-bearing soil layers through skin friction.
Micropiles can transfer tensile, compression and alternating loads. Typical applications are the foundation or strengthening of existing foundations of structures (e.g. buildings, bridges, retaining walls, masts etc.) or uplift restraint for structures in groundwater.
Hollow-bar piles consist of three main components: the pile head, the steel tendon or compression member – including coupler and single-use drill bit – and the grout body.
The steel tendon or compression member is a hollow steel bar with a coarse, cold rolled round or trapezoidal thread and can therefore be cut or joined at any desired point.
- National approval pending
- Well suited to transport and assembly conditions as delivered in parts with couplers
- A wide selection of drill bits allows use in a wide range of soil types
- Simple to adapt to required length on site, e.g. with varying geological conditions by using partial sections with couplers
- Excellent bond between SHS-bar and cement mortar thanks to threaded ribs
- Can be closely matched to the required loads thanks to wide range of cross-sections
- Facilitates rapid building progress since drilling, installation and injection of the pile are carried out in a single operation
- Temporary piles (service life up to 2 years)
Semipermanent piles (service life up to 50 years)
- Semipermanent piles, untreated, allowing for a soil-dependent rusting rate
- Semipermanent piles, hot-dip galvanised, allowing for a soil-dependent rusting rate