SOIL NAILS

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Soil Nails are Deep Foundation elements that provide reinforcement of excavations, natural or man-made slopes and slip planes.  Soil Nails are not typically post-tensioned.


Soil Nails consist of closely spaced steel bars drilled and grouted in place and can be installed either horizontally or vertically.  Although the name includes the word "soil", Soil Nails may be installed in a variety of soil types and conditions including soft or weathered rock.  


Depending on placement, Soil Nails may be installed with or without surface reinforcement although the most common method of installation includes facing.  Soil Nail Walls can be temporary or permanent and may be faced with reinforced concrete, shotcrete, high tensile strength wire mesh, and wood or steel lagging.

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SOE soil nail wall with shotcrete facing the University of Arkansas Ozark Hall in Fayetteville, AR.

SUPPORT OF EXCAVATION (SOE)

Vertical or near-vertical excavations of 3'-6' or more require shoring of the ground adjacent to the cut.  Soil nail walls are a type of excavation support system that can provide temporary or permanent support for cuts or slopes during excavation.

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SHOTCRETE FACING

Soil Nails Walls can be faced steel reinforced shotcrete if desired.  The shotcrete creates a solid surface on the wall face.  Drains are installed behind the shotcrete to account for infiltration of water.

Soil nail tieback anchors with tecco mesh facing in North Little Rock, Arkansas.

HIGH TENSILE WIRE MESH FACING

 A High Tensile Wire Mesh facing can be used as facing for the Soil Nail Wall.  The wire mesh is anchored with soil nails and tensioned to the proper specification. With this system, vegetation can grow up through the mesh, allowing the treated area to appear more natural over time. 

Permanent soil nail wall at University of Arkansas Harmon Parking Deck in Fayetteville, Arkansas.

PERMANENT SOIL NAIL WALLS

Permanent stabilization of slopes, cuts and slip planes can be accomplished with soil nails.  A soil nail installation can be designed with or without facing to lock the ground in place and prevent future movement of the soil.

FEATURED SOIL NAIL PROJECTS

Permanent Soil Nail Walls with Shotcrete Facing




Crystal Bridges Museum 

Bentonville, AR

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Permanent Slide Repair with Soil Nails and TECCO Mesh




Ozark National Forest

Franklin County, AR

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SOE with Soil Nails and Underpinning of Adjacent Structure




Greenwood High School

Greenwood, AR

GO TO PROJECT

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