Helical Pile Technology
We are a leading international experts in Helical (screw) Pile technology.
The Helical (screw) Pile foundation is an innovative and sustainable foundation solution.
Innovation is always at the forefront of our minds, and in 2004 GTL identified the benefits of the helical pile as an innovative alternative to traditional foundations and piling.
From there we moved to develop a revolutionary method for constructing and installing foundations using Helical pile technology. helical pile, also incorrectly referred to as a screw pile, consists of a central hollow shaft of various diameters and sectional thickness, with helical plates strategically welded at given spacing.
GTL Self-driving pile solution
Conceived and re-engineered since 1950
A Micropile, also known as mini-pile, pin pile, needle pile, and root pile, are small diameter drilled and grouted non-displacement pile, that are typically reinforced with either a steel CHS and/or a central threaded bar.
As defined within international standards it is passive deep foundation less than 300mm in diameter.
Benefits
Hollow-stem augers are continuous flight auger systems with a central hollow core similar to those commonly used in auger-cast piling or for subsurface investigation. These are installed by purely rotary heads. When drilling down, the hollow core is closed off by a cap on the drill bit. When the hole has been drilled to depth, the cap is knocked off or blown off by grout pressure, permitting the pile to be formed as the auger is withdrawn. Such augers may be used for drilling cohesive materials, very soft rocks, and are commonly used in sands. Various forms of cutting shoes or drill bits can be attached to the lead auger, but heavy obstructions, such as old foundations and cobble and boulder soil conditions, are difficult to penetrate economically with this system.
The main advantage of a micropile is its ability to figure in terribly engorged and low height areas and on any soil surface regardless of its sort.
Fast ballroom dancing installation even in environmentally-challenging conditions. They’re little and comparatively lightweight. they’re comparatively cheap.
Simultaneous drilling and grouting allow low overhead, restricted access installation. Micropiles are typically preferred to “H” piles attributable to overhead physical constraints.
Offers higher skin friction
The restricted vibration and noise cause very little disturbance.
Piling rigs may be low-emission or perhaps electrically driven.
Micro-piles can penetrate any surface.
Micropiles are used to reduce the existing structure where the requirement of minimal vibration or noise is of major importance.
History
Our consultation is always in sync with your strategy
The Micropiles was first conceived in Italy in the early 1950s. The use of micropiles has grown significantly since their conception, in particular since the mid-1980s.
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.
