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Soil Nailing

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Soil Nailing

Postby Prasanth » Sat Oct 12, 2013 7:18 am

Soil Nailing is a procedure to reinforce and strengthen ground adjacent to an excavation by installing closely spaced steel bars called “nails” ,as construction proceeds from top down.

It is an effective and economical method of constructing retaining wall for excavation support, support of hill cuts, bridge abutments and high ways.

This process is effectively in cohesive soil, brocken rock, shale or fixed face conditions.

Soil nail technology was first used in France to build a permanent retaining wall cut in soft rock. The project, undertaken in 1961, was the first where steel nails were used to reinforce a retaining wall.

The first soil nail wall to use modern soil nailing techniques was built near Versailles in 1972. The technique included installing high-density, grouted soil nails into a 60-ft.-high wall and facing it with reinforced concrete.


Stabilization of railroad and highway cut slopes

Excavation retaining structures in urban areas for high-rise building and underground facilities

Tunnel portals in steep and unstable stratified slopes

construction and retrofitting of bridge abutments with complex boundaries involving wall support under piled foundations

Stabilizing steep cuttings to maximize development space.

The stabilizing of existing over-steep embankments.

Soil Nailing through existing concrete or masonry structures such as failing retaining walls and bridge abutments to provide long term stability without demolition and rebuild costs.

Temporary support can be provided to excavations without the need for bulky and intrusive scaffold type temporary works solutions

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