Driven piles of ductile cast iron

Safe and highly versatile foundation components

The building industry needs simple and safe pre-formed driven pile systems which are suitable for a wide range of applications. The driven cast iron pile is driven into the ground to a desired length and transmits forces from the structure situated above it into the ground. The ductile pile is an economical and technically acceptable alternative to conventional methods of laying deep foundations. Carrying working loads of up to 1400 kN, the ductile pile is suitable for foundation work of almost any kind.

Being economical while giving high productivity on sites which are simple to set up, this system is not only suitable for large-scale projects but can also be used at low cost on small to medium-sized building projects.

The load is transmitted either by end-bearing pressure in the case of un- grouted end-bearing piles or by skin friction in the case of pressure-grouted piles.

The advantages

  • Sites are simple to set up because the equipment used is relatively light and easy to manoeuvre.
  • Corrosion resistance is high compared with structural steel.
  • Pile lengths can be adjusted reliably to changing soil conditions. The shaft bearing capacity can be checked while piles are being driven.
  • Individual pile pipes are quickly connected by frictional connections on the site itself and no special tools or welding are needed.
  • Installation with almost no transmitted vibration. Piles can be installed on gap sites. Minimum spacing of pile centreline from existing buildings is 40 cm.
  • Extremely economical. Capital costs are low and productivity is high at 200-400 running metres a day.
  • No spoil from boring, no off-cuts and no re-machining of the heads of piles.

An approved pile system

5.0 metre long pile pipes

The ductile cast iron pile pipes, with a tapering spigot end and a tapering socket, are assembled into a continuous pile of a desired length.

  • Efficiently transportable and site logistics are simplified
  • Easy to handle
  • Pile lengths can be up to 50 metres

 

Frictional socket joint

The driving process and the high impact energy produce a rigid joint stiff in bending between the pile pipes.

  • The individual pipes can be connected quickly on the site itself
  • No special tools or welding work needed
  • Flexible adjustment to the foundation ground: assurance of correct lengthening of the pile shaft

A full range of products

Our consultation is always in sync with your strategy

The pile system includes all the accessories to form the heads and toes of piles, and anvils to suit any hydraulic hammer.

  • Pile-supported pipelines: Pile-pipe saddles for DN 200 to DN 500 pipelines
  • Drive shoes and drive tips for grouted and ungrouted piles
  • Coupling sleeves for connecting shortened piles when headroom is limited

GTL Self-driving pile solution

Installation

The micro-pile is constructed by drilling a borehole which can be formed in several ways. Generally, a threaded central reinforcement bar with a sacrificial drill bit is used to form the borehole.

The pile is simultaneously drilled, and grout pumped into the newly formed void without requiring casing to control loose or collapsible soils. The sacrificial drill bit also allows for the penetration of boulders and rocks.

Thanks to their self-drilling function, bars can be drilled into most ground conditions for tension, compression, or alternating load applications. The pile is installed using relatively small rotary and pumping equipment therefore the benefit being the ability to mobilise within confined spaces, up steep slopes and into remote locations.

Micropiles are installed by methods that cause minimal disturbance to adjacent structures, soil, and the environment. They can be installed where access is restrictive and, in all soil, types and ground conditions. Micropiles can be installed at any angle below the horizontal using the same type of equipment used for the installation of ground anchors and for grouting projects.