Ankora Retaining Wall Accessories
In addition to the Precast Ankora Block Components, Ankora distributors will supply installers a full package of accessories to complete your Ankora Retaining Wall.
Stainless Steel Cable Tie-Downs
The Ankora Retaining Wall incorporates a system of Stainless-Steel Cable Tie Downs and Anchor Piles. The need for cables and the number of cables holding down each column of blocks is computed by the Ankora engineering software. In general, two cables connect to each column of blocks are required for retaining walls 10 to 17 feet (3 to 5.2m) in height. Walls taller than 17 feet (5.2 m) often require additional tiedown cables. However, the system is very flexible allowing for more tiedowns or tie-backs to enhance the stability of the system. The cables are connected to the Foundation Base Plates generally as illustrated below and are nominally tensioned by the installer. This process is quick and simple to implement using a two-ton come-along winch. Post-tensioning the cables is important and failing to do so can result in outward wall rotation.
Failure to attach and secure the cables properly (when required) in accordance with the drawings could result in retaining wall movement and collapse. It is essential that they are installed in accordance with the drawings and inspected by the designer prior to backfilling. Never leave loose cables.
The wire ropes used for design typically consist of 5/8″ or 3/4″ 6×19 Type 304 Austenitic stainless steel. The wire ropes are made with approximately 18% chromium and 8% nickel to provide excellent corrosion resistance. This type of steel is more than 200 times more corrosion resistance than regular mild steel. It is food grade stainless steel and is also used for medical devices. The wire ropes are weldable and can be hardened by cold working. The ropes are manufactured in accordance ASTM A1023.
Ankora 6 x 19 Stainless Steel Wire Rope IWRC T-304
Ankora 100 mm SCH 80 Steel Cable Connection Pipe
Ankora Loop Thimble
Ankora ¾”, 5/8” Stainless Steel Wire Rope Clip/Toque Nuts
Ankora Anchor Pile Domed Nut
Anchor Piles
Short grouted micro-piles/dowels are required to anchor the Ankora foundation footing plates to the subgrade to resist excess bearing, sliding, overturning forces and to enhance the global stability of the system. The standard 6 foot (1.8 m) wide Ankora Foundation Footing Plate (base plate) accommodates two piles. Anchor Piles are required for walls higher than about 12 to 15 feet (about 3.6 to 4.6 m), depending on soil conditions, steepness of grade, and seismic environment. Anchor piles generate considerable resistance to sliding, overturning, bearing, settlement as well as global modes of failure.
Soil Anchors
Soil Anchors have also been used successfully for tall walls to enhance stability. Often soil anchors will be needed to address excavation stability for such tall retaining walls. With an allowance for corrosion protection and long-term factored loads, soil anchors have been successfully used on many Ankora Retaining Walls.
Questions?
If you are an Engineer, Installer, Developer or Producer interested in learning more about the Ankora Retaining Wall System or would like to work with Ankora on your next project, please feel free to call or email our team.