Innovation Below Ground ® - Screwpiles and Foundation Solutions
In 2004 GTL identified the benefits of the Screwpile as an innovative alternative to traditional foundations and piling. Since which GTL have created a revolutionary way to construct and install foundations using screwpile technology.
Today GTL are a leading international foundation solution company who specialise in utilising screwpile technology.
GTL are recognised as a world class provider of Engineering and Construction services and have an unsurpassed reputation for innovation, quality and performance. GTL’s commitment to quality is paramount to our success. GTL has a tradition of helping solve client challenges in a professional, friendly and supportive way. GTL have built a reputation as a problem solver with a unique ability to handle special applications and unusual situations.
GTL provide services at every stage of a projects development through to operations within many markets including;
· Oil & Gas including pipe line restraint, compressors and support structures
· Transport including rail and highway signs, gantries and support structures
· Infrastructure including telecom towers and masts, pylons and wind turbines
· Industrial including steel portal frames, temporary structures, car parks, housing and major construction
· And marine services including piers, pontoons and flood defences
GTL’s core business strategy is to generate value for all stakeholders that include employees, customers, suppliers, subcontractors and stakeholders. We achieve this by remaining the flagship company in foundation solutions utilisng screwpile technology and by maintaining strong and re-occurring revenues from our long term customer relations.
Our strategy is underpinned by our main values which include;
An organisational structure which provides support and development of our people which in turn
encourages innovation and learning
Maintain quality through our ISO 9001 certification
Total commitment to health and safety which is supported by our CSCS Gold standard commitment certificate
Total protection of the environment which is supported by achievement and management of ISO 14001
GTL are committed to building a safe and sustainable business based on achieving a balance of economical, environmental and
social benefits and to continue improving our products and services in all areas of our business
To be ethical, thrust worthy and to deliver on our promises.
Screwpiling - The Advantages of Screwpiling
Why use our solution?
GTL’s foundation system is known for its ease and speed of installation.
Some of the advantages are;
• Speed of installation - typically a standard 6m pile takes on average
ten minutes to install.
This reduces contract program time, on site prelims, speed to market and road/track closures amongst other factors.
• Sustainable and environmentally friendly – by reversing the installation process the screwpile can be decommissioned and re-used leaving a Greenfield site.
• Reduced Environmental Impact - Installation procedure produces minimal vibration and noise, allowing installation close to noise sensitive areas and night time operations.
• Less disruption - Reduced deliveries unlike the wet trades, means less disruption to neighbours and other on site activities.
• Workmanship – not so reliant on skill of driver. Minimumal Instruments required to minitor pile installation reducing errors and calibration.
• Waste – minimal materials wasted. Off site Pre-fabrication of piles and grillages reduces site waste and deposal costs
• Program acceleration – If program requires acceleration then this can be achieved quickly by deploying an additional power-head and hydraulic unit. There is no waiting for additional materials or deliveries as this would already be on site.
• Minimal Soil Disturbance – due to installation method unlike CFA or Rotary Bored. Especially through sand and gravels
• Adaptable - Pile can be tailored to suit the ground conditions from cohesive (clays) to cohesionless (sands and gravels) soils or a combination of both.
• Reduced resource – a typical crew consists of three. An advantage on hazardous sites where mitigating risk is paramount.
• Guaranteed product – quality control of steel and fabrication gives confidence in the quality of the pile in the ground prior to installation.
• End Bearing – the steel helix plate gives you very good end bearing characteristics, with very little remoulding of the soil surface due to installation.
• Flexible - Helix plates can be spaced to give particular failure conditions (end bearing or shaft).
• Comparable - Monitoring of soils quality and capacity during installation, direct comparison to available site investigation and preliminary pile tests.
• Soil variability - Unforeseen variability in soils can be overcome by the addition of helical plates.
• Quick test results - Preliminary Pile tests and results can be carried out and received with 48 hours of starting test setup.
• On site Modifications - Variability in penetration depth is achieved by additional pile sections.
• Reinforcement cages – do not require full length reinforcement cages and the problems associated
• No spoil – with the spiraling cost of muck away the solution proves to be financially and environmentally viable especially in contaminated ground.
• No Concrete - no curing time so loads can be applied immediately. A 60m mast foundation can be installed within one day.
• Close proximity - to trees, services, existing foundations and buildings. No root damage or undermining.
• Resistance to tension and compression – the pile can be used as a tension anchor and soil nail.
• Restricted access - Segmented sections for reduced head heights – piles can be installed under pipe racks and in basements.
• Cold temperature conditions - unlike concrete that can only be installed above freezing point without specialist equipement.
• Underwater Installation – by utiliosing specialist GTL equipment screwpiles are able to be installed in subsea marine conditions
• Low mobilisation/demobilistation costs – equipment is delivered by a low loader
• Corrosion – within aggressive soils can be accomadated
• No liners/casings – no requirement for piling thorugh perched water tables or underground water courses.