Soil nailing is a construction technique that can be used as a remedial measure to treat unstable natural soil slopes or as a construction technique that allows the safe over-steepening of new or existing soil slopes.
The technique involves the insertion of relatively slender reinforcing elements into the slope – often general purpose reinforcing bars although proprietary solid or hollow-system bars are also available. Solid bars are usually installed into pre-drilled holes and then grouted into place using a separate grout line, whereas hollow bars may be drilled and grouted simultaneously by the use of a sacrificial drill bit and by pumping grout down the hollow bar as drilling progresses. Kinetic methods of firing relatively short bars into soil slopes have also been developed. Bars installed using drilling techniques are usually fully grouted and installed at a slight downward inclination with bars installed at regularly spaced points across the slope face. A rigid facing or isolated soil nail head plates may be used at the surface.
Alternatively a flexible reinforcing mesh may be held against the soil face beneath the head plates Here at JTS Geotechnical Solutions Ltd we have over 50 collective years experience in all types of soil nailing techniques and can provide the best solution for your requirements. Please contact us with your requirements and we will find the best solutions for your needs.
Retaining walls are relatively rigid walls used for supporting soil laterally so that it can be retained at different levels on the two sides. Retaining walls are structures designed to restrain soil to a slope that it would not naturally keep to (typically a steep, near-vertical or vertical slope). They are used to bound soils between two different elevations often in areas of terrain possessing undesirable slopes or in areas where the landscape needs to be shaped severely and engineered for more specific purposes like hillside farming or roadway overpasses.
Mini piling is a variation on piling that uses a narrower diameter. This makes them light and inexpensive whilst still being able to support considerably heavy loads. For the most common type of mini piling a hollow steel shaft is screwed or drilled into the ground. On top of this, grout or concrete is poured in for the pile, while the soil is supported throughout by the steel shaft. Unlike traditional boring methods, no extra supports are needed, even in weaker, looser soil. In construction sites where there is limited headroom, sectional auger mini piles can be used. This involves boring down and adding multiple flight sections as you go. The sections can either be removed or left in place while pouring the concrete depending on the soils stability.