Rotary piling is especially suited to boring through hard strata, and any boulders or man made obstructions which may prevent the use of CFA piling methods. On confined sites rotary piling can work with a smaller site setup than a CFA rig. For basement & retaining wall projects, the rotary method used with segmental casing offers tight tolerances on pile verticality, as well as allowing the installation of full length reinforcement cages to a greater depth than CFA piling.

Rotary piling can also be used together with permanent debonding pile sleeves, reducing load transfer to underground structures such as tunnels, culverts or retaining walls.

The key to rotary piling is understanding the ground conditions and having the right tool available for the material being bored. We own and maintain all of our own tooling, including various sizes of rock & clay augers, core barrels, cleaning buckets, temporary casing and tremmies. This range means that we can work at maximum efficiency in any ground conditions, and allows us to react quickly if ground on your site varies against expectations.

Our rigs vary from the lightweight, 12t Tescar CF3 to our newest rotary rig, the 90t Soilmec SR95. Our smallest rig, the Tescar CF3, can work in headroom as low as 3.6m, yet it is capable of drilling piles up to 750mm diameter and 22m deep.

The Soilmec SR95 is our newest rig, capable of installing segmental temporary casing to depths of up to 30m, and boring piles up to 3000mm diameter to 70m and beyond, depending on Kelly bar.

We have recently invested in a Soilmec STM20 lorry mounted piling rig, having operated a number of similar rigs in the early 2000’s. The rig compliments our existing Highways capabilities, enabling us to offer rapid mobilisations at low cost for roadside & Smart Highways type projects. The STM20 is also well suited to short duration rotary jobs such as trial piling, or where permanent casing is required on a small number of piles as part of a larger scheme.