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Unlike prestressed anchors taking their reaction outside the zone to be stabilised (or outside the zone of active earth pressure when tying back a retaining wall), passive (unprestressed) anchors (soil nailing) are cemented in the stabilised mass over their whole length.
Soil nailing are mostly used in slope stabilisation.
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Terratest follows the same philosophy of leadership in Anchor braces as with the rest of its business activities. That involves having the most modern plant and machinery and the continuous training programs for its personnel to ensure they are highly qualified for the job to be done.
Anchor braces, both temporary and permanent, can be applied in:
* Bracing core walls
* Joining spans of core walls
* Embankment stabilisation
* Bosses
* Traction absorption in all kinds of foundations
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In general, undisturbed ground has sufficiently high compression strength, but only low tensile and shear strength.
Soil nailing is a construction technique which is applied to increase and/or maintain the stability of soil mass by installing reinforcing bars or soil nails.
The construction method of soil nailing was developed by Bauer Spezial-tiefbau in the course a research project. The latter one was supported by the German Federal Ministry of Research and Technology.
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Soil nailing is an economical technique for stabilizing slopes and for constructing retaining walls from the top down. This ground reinforcement process uses steel tendons which are drilled and grouted into the soil to create a composite mass similar to a gravity wall. A shotcrete facing is typically applied, though many architectural options such as precast panels or "green" vegetated cells are available for permanent wall facings.
Rembco has a versatile fleet of equipment that is specially designed for soil nailing. We have found soil nail walls to be a very attractive alternative to cut retaining walls.
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New cuttings and embankments are frequently incorporated in transport infrastructure projects and commercial developments. Numerous existing slopes need stabilising as part of remedial and ongoing maintenance situations. Safe, efficient design and construction of these schemes is paramount.
Our experienced team provides detailed designs to national standards (including HA) using industry recognised software such as Slide and WALLAP. This enables us to provide cost effective solutions, especially where we are given the advantage of early involvement in the project. With our extensive resources, our solutions can involve one or more techniques for the same project.
We have plant and equipment suitable for working in various environments and specialist situations including railways, highways, watercourses and remote and restricted access sites. A recent development has been in the use of extra long reach excavator mounted soil nail drills and personnel access equipment to facilitate speedy and economic working from the toe or crest of extensive slopes. Such jobs would hitherto have required time consuming and relatively costly rope access or other slope based methods.
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Macadam binding of slope
The prevention of the landslides is carried out by the installation of tubes, of variable diameters from 600 to 1.200 mm, on depths from 10 to 30 Mr. C' is a technique inspired of the tubed drilled piles which is particularly effective in order to avoid any slip.
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