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in accordance with DIN EN 12 699

We supply driven piles as displacement piles in a range of designs:

In-situ concrete driven piles

  • Frankipfahl NG® piles
  • Simplex piles


Driven precast piles

  • Steel pipe piles
  • Cast iron ductile piles (HPD piles)
     

The piles are driven dynamically, either by internal pipe driving or by head driving, depending on the type of pile. 

Applications

We use driven piles as deep foundation elements for all types of structures. These include:

  • Industrial buildings
  • Bridges
  • Wind turbines
  • Logistics warehouses
  • Residential and commercial buildings
  • Offices and hotels
     

With pre-cast driven piles, construction is also possible where working heights are restricted.

Advantages 

With their short set-up times, rapid pile production and high load-bearing capacity, driven piles are more cost-efficient and result in shorter construction times. The soil is fully displaced, yielding optimised subsoil conditions and zero drilling waste. This saves on additional costs for transport and landfill disposal.

The installation procedure and the control of the required resistances allow the pile lengths to be readily adapted to changing soil strata.

The advantages of driven piles:

  • Very high pile loads possible
  • Optimum adaptation to subsoil conditions
  • Narrow piles with less concrete consumption and lower carbon footprint than alternative pile systems
  • Full soil displacement, thus no transport or disposal costs for the drilling waste
  • Complication-free use in contaminated soils
  • Economical pile system due to high pile production output
  • Very good resistance-settlement properties
  • Plumb and raking piles can be installed at an inclination of up to 4:1
  • Can be designed as an energy pile, so that the driven piles can also be used for geothermal purposes.
     

Basic facts 

Our displacement piles in accordance with DIN EN 12 699 include the following driven piles:

Driven precast piles

  • Steel pipe piles
  • Ductile piles / HPD piles
     

In-situ concrete driven piles

  • Frankipfahl NG® piles
  • Simplex piles
     

Standards and regulations

Our driven piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699 and the recommendations of the “Piles” working group (EA-Pfähle). Diameters range from 118mm to 710mm. Pile lengths of up to 40m are possible. 

Production

The following types of foundations are possible:

  • Single pile foundations with one-dimensional load transfer
  • Group pile foundations with two-dimensional load transfer
  • Special case: combined pile raft foundations
     

The wide variety of available variants allows us to adapt to the most diverse subsoil conditions and construction site scenarios in order to achieve high load-bearing capacities.

Quality assurance

Quality assurance in construction work requires compliance with European and national standards and the recommendations of the "Piles" working group (EA-Pfähle). The self-monitoring and documentation of construction execution are also regulated in manufacturing standards.

A procedure instruction that is individually adapted to the requirements of the relevant project is required to install driven piles. The machine operator’s instincts are just as important as their technical knowledge or experience. Operating the large special equipment is a delicate process that requires optimal tuning of the manufacturing parameters to achieve the desired pile resistance.

We ensure high execution quality with:

  • Individually coordinated instructions
  • Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-Pfähle
  • Clear processes governed by our quality management system in accordance with DIN EN 9001:2015
  • Static or dynamic pile load testing
  • Pile integrity tests
     

Design variants

We always work with our own special equipment and appropriately qualified professionals. Our greatest strength is our ability to adapt to the individual conditions on the construction sites at any time during the project. Our long-standing experience and a wide range of technical possibilities ensure that implementation is always safe and successful.

Ductile driven piles - High-performance displacement piles with general design approval

Ductile driven piles or high-performance displacement piles (HPD piles) are cost-effective, driven precast piles. They can be used as a deep foundation element for all types of structures. Using HPD piles improves the subsoil by fully displacing the soil instead of extracting it. This also saves on additional costs for transport and landfill disposal.

One of the most persuasive features of the HPD pile is its short production time and comparatively low equipment and space requirements. The pile system, which consists of cast-iron pipes, has been granted general design approval by the German Institute for Building Technology (Deutsches Institut für Bautechnik, DIBt).

HPD piles can be used as deep foundation elements, especially for small and medium-sized buildings.

Common uses include:

  • Factory halls
  • Industrial buildings
  • Electricity and mobile phone masts
  • Conduits

Advantages

This pile system is especially suitable for smaller to medium-sized projects where noise emissions from head driving are not a critical factor.

  • Very high daily output and thus rapid construction progress
  • Cost-effective driven pile
  • Comparatively low equipment and space requirements
  • Full soil displacement, no excavated soil to transport
  • Sleeve grouting can be used to increase the load-bearing capacity
  • Available as compression and/or tensile piles
  • Raking piles also available
  • Reliable and proven with individual general design approval
  • Flexible use, even in confined spaces
  • Pipes can be extended to achieve very long pile lengths
     

Environmentally friendly process

Ductile cast iron is a 100% recyclable material that can be re-used as often as necessary. HPD piles improve the subsoil by fully displacing the soil instead of extracting it. This saves on transport and thus reduces CO2 emissions. HPD piles have proven especially effective in construction projects on contaminated sites.

Basic facts 

Standards and regulations

HPD piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12699, and the recommendations of the “Piles” working group (EA-Pfähle). The cast-iron pipes are 118mm and 170mm in diameter. For further details, please refer to our certification

Z-34.25-203 HLV-Pfahl System Stump

, which you can download from our website. Loads and pipe diameters should be adapted to prevailing soil conditions. We will be happy to advise you on this.

Production procedure

The first pipe section is fitted with a drive shoe or pile shoe, placed in a pre-drilled cavity, and driven into place. The next pipe section is then picked up and inserted into the conical socket of the pipe that was previously rammed in. The driving process creates a rigid, friction-locked connection. The pile is driven to the final depth, which is determined on the basis of the penetration resistance. The excess is trimmed down to the required height. The remaining piece is fitted with a new drive shoe and immediately used as the starting pipe for the next pile. This means that pile production is waste-free. The pile head is designed with a pressure distribution plate and/or tensile reinforcement, depending on the load transfer requirements.

Flexible use

The driven pile pipes are lightweight, which means that the piles can be produced using a light, manoeuvrable hydraulic excavator (HEX) with a rapid-stroke hydraulic hammer. Pile foundations can therefore be produced in very confined and difficult spaces. This allows the piles to be driven gently into the ground virtually without vibration, even in the immediate vicinity of existing buildings. It is possible to maintain a pile-axe distance of approximately 40cm from the existing buildings.

Quality assurance

Quality assurance in construction work requires compliance with both European and national standards. HPD piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699, our general type approval issued by the DIBt, and the recommendations of the “Piles” working group (EA-Pfähle). Self-monitoring and documentation of construction are regulated by the manufacturing standards.

The execution of HPD piles requires a procedural instruction which is individually tailored to the requirements of the specific project.

We ensure high execution quality with:

  • Individually coordinated instructions
  • Compliance with the requirements from DIN EN 12 699, Eurocode 7 and EA-Pfähle
  • Compliance with the requirements in the general type approval
  • Clear processes governed by our quality management system in accordance with DIN EN 9001:2015
  • Static or dynamic pile load testing
  • Vibration measurements
     

Design variants

Grouted displacement piles

Sleeve grouting is especially important in non-cohesive soils to increase the external load-bearing capacity. Concrete grout is injected through the pile pipe as the pile is driven, filling the annular space via a larger diameter drive shoe. In addition to the soil compaction, this also results in a close interlocking with the subsoil. Sleeve friction rates of up to 200kN/m² can be achieved in this way, especially in sandy and gravelly soils.

Raking piles

Raking piles can be produced with an inclination of up to 45 degrees or up to 5 degrees for sleeve grouted piles.

HPD piles
Schöneweide combined heat and power (CHP) plant . Berlin
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Frankipile NG® - The top-of-the-range pile

Frankipfahl NG® piles are primarily used where good quality load-bearing soil types are located deep below the surface and/or where an unusually high load bearing capacity is required. The variety of design variants allows for individual adaptation to a wide variety of subsoil conditions and site scenarios, ensuring high load bearing capacities can be achieved.

These piles can be used as perpendicular piles or raking piles at angles of up to 4:1. Frankipfahl NG® piles also feature an enlarged foot to improve the absorption of tensile loads.

Edgard Frankignoul first applied for a patent for what is now a popular pile system all over the world in 1908. This included the fabrication of the complete pile using tamped, earth-moist concrete. The fabrication of shafts using pourable concrete and the characteristic foot dimensions, which have been in common use in Germany since the early 1990s, represent safe and economical improvements to the original concept. To differentiate between the system devised by Edgard Frankignoul and the newer version, we use the name Frankipfahl NG® for our product, where NG stands for “new generation”.

Frankipfahl NG® piles are also suitable for use in contaminated soils, as they use the displacement method and no soil is extracted. They can even be used as energy piles, with the Frankipfahl NG® piles conducting geothermic heat.

Frankipfahl NG® piles can be used as a deep foundation element for all kinds of construction projects. Suitable projects include:

  • Bridge constructions
  • Wind turbines
  • Silos
  • High-bay warehousing
  • Crane runways
  • Dock bases
  • Industrial buildings
  • Heavy duty surfaces
Technical Brochure
Frankipfahl NG®
Download

Advantages

The variety of design variants allows for individual adaptation to a wide variety of subsoil conditions and site scenarios, ensuring high load bearing capacities can be achieved.

The advantages of Frankipfahl NG® piles:

  • Very high pile loads can be achieved, with a characteristic pile resistance Rk of up to 12,000kN
  • Full soil displacement, eliminating transport costs for excavated soil
  • The number and length of the piles used can be individually adapted for ideal results
  • Foundation size can be reduced
  • A very economical system due to savings in concrete and steel
  • Very good resistance and settlement characteristics
  • Soil may also be improved by means of gravel pre-compaction 
  • Reduced pile casing landing depth
  • Low noise emissions in comparison to head-driven systems
  • Can be used on contaminated sites
  • Can be fabricated in particularly poor, soft soil layers using sleeve pipes
  • Can be used as an energy pile

Basic principles

Standards and regulations

The design and manufacture of Frankipfahl NG® piles are governed by Eurocode 7 and DIN EN 12699 and subject to the recommendations of the “Pfähle” working group (EA Piles). Possible diameters range between 51cm and 71cm. Piles usually measure between 10m and 25m in length. 

Pile foot dimensions

The expanded pile foot is a crucial feature of the Frankipfahl NG® pile, allowing for superior axial pile resistance. This foot is created by ramming almost-dry concrete through the interior of the pipe. In our evaluation of a large number of static pile tests, the compactness/consistency of the surrounding soil and the works required to ram in casing tubes have been observed to correlate directly with the pile foot volume necessary to ensure appropriate load bearing capacity. This correlation can be used to calculate and adapt the foot volume to the load bearing capacity of the site soil. These calculations have been used to extrapolate foot dimension curves, such as you see in EA Piles documents.

We will be happy to advise you on the initial sizing for your project.

Quality assurance

Quality assurance in construction work requires the observation of both European and national standards. The design and manufacture of Frankipfahl NG® piles are governed by Eurocode 7 and DIN EN 699 and subject to the recommendations of the “Pfähle” working group (EA Piles). The self-monitoring and documentation of construction execution are also regulated by manufacturing standards.

Frankipfahl NG® pile fabrication procedures must be individually tailored to the requirements of the specific method used. This requires specialist knowledge and experience in the field, together with sound instincts on the part of the machine operator. Large specialist machinery must be handled with sensitivity and due attention to the optimum adjustment of manufacturing parameters if the desired pile resistance is to be achieved.

We ensure high execution quality with:

  • Individually tailored procedures
  • Adherence to the requirements of DIN EN 12 699, Eurocode 7 and EA Piles
  • Clear processes overseen by our quality management system in accordance with DIN EN 9001:2005
  • Static and dynamic pile loading tests
  • Pile integrity tests

Design variants 

Fabrication without gravel pre-compaction

Frankipfahl NG® piles are in-situ concrete driven piles with retrievable casing tubes. The tubes are fitted with a waterproof seal at the base in the form of a plug of dried concrete or gravel sand. A free-falling drive-hammer works inside the casing, striking this plug and driving the tube into the earth. The required ramming force, measured in blows per metre, is an indication of the load bearing capacity of the soil on the site. After reaching the desired depth or meeting the given ramming criteria, the plug is detached and the necessary volume of footing concrete is driven in. Next, a reinforcement cage is installed, concrete filled in and the casing tube is retracted. Frankipfahl NG® piles can be installed perpendicularly or at angles of up to 4:1.

Fabrication with gravel pre-compaction

If the soil at the intended casing landing depth does not have sufficient load bearing capacity, soil improvement measures involving gravel pre-compaction may be undertaken before the pile toe is fabricated. This soil improvement process consists of tamping (compacting) gravel both above and below the intended pile casing landing depth.

 

Creating the Megapfahl pile

Frankipfahl NG® piles with a shaft diameter of 71cm have also been included in our range since 2009. We call this Frankipfahl NG® the Megapfahl pile. With a slender shaft diameter of 71cm, the Megapfahl pile characteristically provides pile resistances Rk of up to 12,000kN with, depending on the soil type, usually very little settlement.

Diverse applications for improved sustainability

The Megapfahl pile can be used in a wide variety of subsoil conditions as a deep foundation element for structures with particularly high vertical loads, such as bridges, industrial buildings, power stations and silos. The high load bearing capacity of this pile enables the construction of a much smaller foundation or abutment than that required with other pile systems, thus reducing the volume of concrete required, even with large supporting loads.

Optimisation example:

Frankipfahl NG® piles in contaminated soils

Environmentally friendly: 60-degree foot tip

Full soil displacement means the Frankipfahl NG® pile system is particularly suitable for use on contaminated sites. To reduce the carryover of contaminated soil during pile fabrication, we use a 60-degree foot tip when driving through the contaminated layer. Alternatively, it is also possible to use a lead seal to prevent pollutants from travelling into deeper layers.

Secure: lead seals

Pile foundations penetrating contaminated soil layers require appropriate measures to ensure that no pollutants can be carried over into other soil layers, or into groundwater, either during the pile fabrication process or subsequently. This can be achieved with the addition of special lead seals in the contaminated area.

Frankipfahl NG® piles with sleeve pipes

In particularly poor, soft soil layers, where strong groundwater is present or where the site soil is particularly concrete aggressive, the fresh concrete columns of the pile require additional support and/or protection. Sleeve pipes attached to the reinforcement cage can be successfully used to address this issue.

Frankipile NG®
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Windpark Wilstedt-Süd . Wilstedt
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Simplex piles - Displacement pile in accordance with DIN EN 12 699

Simplex piles are cost-effective in-situ concrete driven piles. They can be used as a deep foundation element for all types of structures. Using Simplex piles improves the subsoil by fully displacing the soil instead of extracting it. This also saves on additional costs for transport and landfill disposal.

One of the most persuasive features of the Simplex pile is its short production time. Under suitable conditions, it is particularly effective when used  for foundations with a large number of piles and predetermined long embedment lengths in load-bearing subsoil.

Simplex piles can be used as deep foundation elements for every type of structure. These include:

  • Logistics warehouses
  • Industrial buildings
  • Wind turbines
  • Silos
  • High-bay warehouses
  • Crane tracks
  • Heavy load areas
Technology brochure
Simplex piles (only available in German)
Download

Advantages

This pile system is particularly suitable for projects with a large quantity of piles and long pile lengths. Simplex piles are used where the noise emissions caused by head driving are not a critical factor.

  • Very high daily output and thus rapid construction progress
  • High pile loads possible: Characteristic pile resistances Rk of up to 6,000kN
  • Full soil displacement, thus avoiding the need to transport excavated soil and saving costs
  • Very economical system due to savings in concrete and steel
  • Good resistance-settlement properties
  • Can be used on contaminated sites
  • Also available as an energy pile

Basic facts

Standards and regulations

Simplex piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12699 and the recommendations of the “Piles” working group (EA-Pfähle). Diameters range from 42cm to 61cm. Pile lengths of up to 40m are possible. 

Production

Simplex piles are in-situ concrete driven piles with a reclaimed driving tube. This is sealed from below with a watertight base-plate. The pipe is driven into the ground by a hydraulic hammer via the head. The driving work involved, measured in blows per metre, is a measure of the load-bearing capacity of the soil at the pile site in question. Once the desired depth is reached or the driving criteria are met, a reinforcement cage is installed, concrete is poured in and the casing tube is retracted.

Quality assurance

The requirements of the relevant European and national standards must be observed to ensure quality assurance during construction. Our Simplex piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699 and the recommendations of the “Piles” working group (EA-Pfähle). Self-monitoring and documentation of construction are regulated in the manufacturing standards.

A procedure instruction that is individually adapted to the requirements of the relevant project is required to install Simplex piles. The machine operator’s instincts are just as important as his technical knowledge or experience. Operating the large special equipment is a delicate process that requires optimal tuning of the manufacturing parameters to achieve the desired pile resistance.

We ensure high execution quality with:

  • Individually coordinated instructions
  • Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-Pfähle
  • Clear processes via our quality management system in accordance with DIN EN 9001:2015
  • Static or dynamic pile load testing
  • Pile integrity tests
     
Simplex piles
STILL Logistics Centre . Hamburg
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Simplex piles
Factory for offshore wind turbines . Cuxhaven
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Steel pipe piles - Displacement pile in accordance with DIN EN 12 699

Steel pipe piles are both displacement piles and driven precast piles in accordance with DIN EN 12 699. They can be used as deep foundation elements for every type of structure. Using steel pipe piles improves the subsoil by fully displacing the soil instead of extracting it. This saves on additional costs for transport and landfill disposal.

One of the most persuasive features of the steel pipe pile is its short production time and comparatively low equipment and space requirements.

Steel pipe piles are particularly suitable for rebuilding the foundations of existing buildings in confined spaces, as they do not require a great deal of clearance from existing buildings.

Examples include:

  • Restricted heights and confined spaces (building in existing structures)
  • small quantities of piles
  • in contaminated subsoils (because the soil is fully displaced and not extracted)
  • Industrial buildings
  • Electricity and mobile phone masts
  • Conduits

Advantages

The pile system is particularly suitable for small quantities of piles and confined spaces.  

  • Economical – even for small quantities of piles: quick assembly and dismantling, so shorter construction times
  • Flexible use, even in confined spaces
  • Comparatively low equipment and space requirements
  • Full soil displacement, no excavated soil to transport
  • High buckling resistance, able to absorb H-loads and bending forces
  • Pipes can be extended to achieve very long pile lengths
  • Comparatively low-noise production due to internal pipe driving
  • Can also be produced in particularly poor soft layers
  • Steel pipes are also resistant to concrete aggressive groundwater and chemical attack
  • Compression and tension piles as well as plumb and raking piles are feasible

 

Reusable and environmentally friendly

Steel is a material that can be reused as many times as desired. It is 100% recyclable. Using this system improves the subsoil by fully displacing the soil instead of extracting it. This saves on transport and thus cuts down on CO2 emissions. Steel pipe piles have proven especially effective in construction projects on contaminated sites.

Basic facts

Standards and regulations

Steel pipe piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12699 and the recommendations of the “Piles” working group (EA-Pfähle). The usual pipe diameters are 219mm, 356mm and 406mm. Loads and pipe diameters should be adapted to the prevailing soil conditions. We will be happy to advise you on this.

Production

A starting pipe, which is closed at the base, is driven into the ground using inner pipe ramming. Extension pipes can be attached and welded in place around the circumference, if required, so that the workflow can continue. Once the final depth has been reached, the pipes are filled with concrete and the heads are reinforced to secure the connection.

The steel pipes remain in the ground in their entirety and act as additional protection against concrete aggressive water and soft strata. Excess piping is trimmed off after the required depth has been reached. The steel profile is capable of bearing the loads on its own.

Flexible use

Steel pipes are relatively lightweight, which means that the piles can be produced with a small, compact device. This allows the pile foundations to be produced in very confined and challenging spaces. The inner pipe ramming method allows the piles to be driven gently into the ground with virtually no vibrations, even in the immediate vicinity of existing buildings.

Quality assurance

The requirements of the relevant European and national standards must be complied with to ensure quality assurance during construction. Our steel pipe piles are designed and manufactured in accordance with Eurocode 7 and DIN EN 12 699 and the recommendations of the “Piles” working group. Self-monitoring and documentation of construction are regulated by the manufacturing standards.

A procedure instruction that is individually adapted to the requirements of the relevant project is required to install steel pipe piles.

We ensure high execution quality with:

  • Individually coordinated instructions
  • Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-Pfähle
  • Clear processes governed by our quality management system in accordance with DIN EN 9001:2015
  • Static or dynamic pile load testing
  • Vibration readings
  • Constant monitoring of the injection agent
  • Digital monitoring and evaluation of the manufacturing parameters
     

Design variants

Steel pipe piles can be supplied in the following design variants:

  • Plumb or raking pile
  • Compression and/or tensile pile
  • Pile reinforced at the head or along the entire length of the pile
     
Steel pipe piles
Railway bridge Zepernicker Chaussee . Bernau
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Steel pipe piles
Railway overpass Niedermoos . Murnau am Staffelsee
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