Piling

This piling method is ideal for use in cohesive soils. The rotating auger screws into the strata reaming out the soil. Once the required depth has been achieved the steel cage and concrete is placed.

Smaller models are suitable for internal use or restricted areas.

As a rotary auger causes minimal vibration it is ideal for use next to buildings or underground services.

A number of our rigs can install this type of pile and the choice is dependent on pile load, size of site and the number of piles to be installed. We have smaller rigs such as GP Services T15000, B15000 and Klemm 708 for use on restricted sites. If piles need to be formed through loose or wet strata a temporary cased, continuous flight auger or driven piled solution may be preferable.

There are many advantages to driven cased piles. They are simple and economical to drive with an internal drop hammer. They provide flexibility as piles can easily be cut or lengthened and casings can be supplied in any length and in a wide range of diameters.

Casings are light but rigid enough to be transported and handled without the precautions needed with precast concrete piles. Cased piles can be installed in difficult site conditions. Used on sites where soft soils overlay more competent strata, permanently steel cased piles are driven with an internal drop hammer to achieve a solid set at depth. Suitable reinforcement is then added and the casing filled with concrete.

This is a displacement pile and creates no arisings. It is particularly useful when piling in contaminated ground as expensive disposal is avoided. It is useful on restricted access sites when spoil removal is particularly awkward.

With the optional auger attachment, piles can be pre-bored through harder layers before driving casings. This reduces surface vibrations to neighbouring properties.

Smaller diameter driven cased piles are often used in domestic situations and concerns regarding vibration should not rule out this application.

This is a cost-effective way of piling through made ground, sands, gravels or any unstable water bearing strata, eliminating the need for temporary casing and Tremmie techniques.

Essentially the auger is drilled to achieve the required depth. When this is achieved, concrete is pumped through the auger as the auger is being withdrawn. The reinforcement cage is then placed through the wet concrete. Our Soilmec, Klemm, B15000 and T15000 rigs are used for this type of pile.

The choice of rig is dependent on access, size of project and number of piles required. Piles may be filled using conventional concrete or sand/cement grout, depending on production output and accessibility.

Check out our Resources page for details of all our rigs.

The Grundomat or mini driven rig uses 150mm casing and is suitable for use in and around buildings.

This air-driven system vibrates steel casings down to strata that give suitable resistance. Casings are welded in small sections on site to attain the required depth and subsequently filled with concrete and steel reinforcement.

This rig can operate in very restricted headroom and limited access situations. This method of piling creates no spoil to remove from site.