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Chance Tie Backs
   -Dura Grip Anchors
Repair of Bowing and Cracked Walls
   -Power Torque System
   -The Reinforcer™
Soil Screws
   -Applications

Simple Procedure

Faster, with fewer steps, the SOIL SCREW™ Retention Wall System gives you economic advantages.

Install quickly by the same hydraulic rotary equipment commonly used for soil nail wall construction.
Immediate loading.
No spoils to remove.
Installs in any weather.
Easy to store, reusable.

Compatible with other materials and practices.

Terminations fit threadbar or provide a threaded stud to work with prefabricated or site-made lock-off devices. Other termination fittings also are available.

In some cases, the through-hole at the shaft end may be simply crosspinned.

SOIL SCREW™ Retention Wall System

Site-specific, matched to conditions and loads.

To remove the performance uncertainties and associated costs of grouted soil nails in soils of low shear strength, the Chance SOIL SCREW Retention Wall System employs screw anchors. When placed in the soil, a screw anchor acts as a bearing device. This is its fundamental difference compared to a grouted anchor, which relies on friction between the soil and the grout.

In a soil nail application, the SOIL SCREW™ Retention Wall System constructs a gravity wall to reinforce in-situ soil with screw anchors nearly horizontal. Anchors sizes and grid spacing are determined by soil conditions and load requirements.

A reinforced-shotcrete veneer often is applied to the face.

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Modular components serve a wide range of jobs

Select from double-and triple-helix leading and extension sections for job-specific combinations. Forged integral coupling sockets bolt-up quickly and efficiently transfer installing torque.

Three-Helix Lead Section C110-0691	Two-Helix Lead Section C110-0692	Three-Helix Extension C110-0689	Two-Helix Extension C110-0690
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Design Manual

More than 100 pages detail how to take advantage of the SOIL SCREW™ Retention Wall System for your soil nail walls, based on these industry guidelines and recommendations:

FHWA (Federal Highway Administration) design and build guidelines.
Recommendations of Clouterre - France.
Key software for internal and global stability.

A practical desktop design reference SOIL SCREW™ By designers for designers, this illustrated guide coordinates with accepted principles and computer tools.

Contents include:

Comparison to other walls such as tiebacks and mechanically stabilized earth (MSE)
Suitable applications
Procedures for Design
Procedures for Construction.

Expand your design team
Share in the profitable SOIL SCREW™ Retention Wall System. This manual can help you put it to work for you. Join other innovative designers who already have. Contact your Chance representative today.