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Mini Piling contractor Aarsleff Ground Engineering specialise in the design and installation of mini piles from 100mm diameter to 600mm diameter and can install Grundomat piling, Bottom Driven Steel, Sectional Flight Auger, Screw Piles, Helical Piles, and/or Driven or Augered Mini Piles. Mini Piles are often utilised in sites with difficult or restricted access, or with environmental sensitivity. Mini piles are used to strengthen existing structures such as bridges, retaining walls, floor slabs and can be used as an alternative to traditional underpinning. Aarsleff are backed by a firm of geotechnical consultants who provide a fully insured mini pile design service. Rest assured that Aarsleff will provide you with the most competitive quote for mini piles which fits your project and budget.

The Grundomat method is an air driven piling system, which uses compressed air to drive the piles. The compressed air can be supplied from outside the restricted area, making this method extremely mobile. The technique does not require large piling machinery or a piling matt, and generates minimal vibration, making it the ideal pile type for restricted access sites or underground areas requiring foundations. Grundomat piling uses steel tubes ranging from 100mm to 150mm diameter which are driven until a determined set has been reached. Extra steel tube sections can be welded together as required, and once in place the steel tubes are reinforced and filled with grout or concrete.

  • Work extremely well both in tension and compression
  • Fast installation times
  • Can be installed in confined spaces
  • Mini piles cause minimal disturbance/vibration to adjacent structures during the installation
  • With suitable ground conditions they can be installed cost effectively, with high load capacities
  • They can be installed in areas presenting difficult access and/or overhead clearance
  • They can be structurally incorporated into existing foundation systems
  • Can work within low headroom in restricted working conditions
  • Virtually vibration free

Why choose Aarsleff Ground Engineering as your mini piling contractor in the UK?

Aarsleff Ground Engineering can work on a wide range of schemes- whether it’s multi-use residential developments, hospital and health care buildings, schools and universities, commercial units that need a variety of pile types, or infrastructure like rail, embankments and roads.


The size of the mini pile is determined by the load-bearing capacity of the ground and the size of rig that is able to access the piling location. They can be driven or screw piles and tend to be used where access is restricted, for example underpinning structures affected by settlement. They were first used in Italy in the 1950’s in response to the demand for innovative underpinning techniques that could be used for historic buildings and monuments.

They are particularly suited to:

  • Shallow bedrock.
  • Boulders and cavities.
  • Immediate hard strata.
  • Where underpinning is required, such as for foundations adjacent to planned excavations.
  • Mini piles can also be used in combination with other ground modification techniques where complex site conditions and design specifications are present.

In a typical installation process a high-strength steel casing is drilled down to the design depth. A reinforcing bar is inserted and high-strength cement grout pumped into the casing. The casing may extend along the full length of the pile, or it may only extend along part of the length of the pile, with the reinforcing bar extending along the full length

Contact us today about your Mini Piling requirements –

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