The AnchorFast Retaining Wall System must be built with AnchorFast approved and supplied accessories. Any AnchorFast Retaining Wall built using non AnchorFast Retaining Wall approved accessories will not be approved by a professional engineer. Do not substitute any AnchorFast accessory without engineering approval.
Stainless Steel Cables
The need for cables and the number of cables holding down each column of blocks is computed by the Anchor Fast software. In general, two cables connect to each column of blocks are required for retaining walls 10 to 17 feet (3 to 5.2m) high.
AnchorFast Retaining 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.
(See AnchorFast Design Manual for more details)
Short grouted micro-piles / dowels are required to anchor the foundation base plates to subgrade to resist excess bearing, sliding, overturning forces and to enhance the global stability of the system. Piles generally need to be introduced for walls higher than 12 to 15 feet (about 3.6 to 4.6 m), depending upon 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. (See AnchorFast Design Manual for more details)
- AnchorFast 6 x 19 Stainless Steel Wire Rope IWRC T-304 (photo #2)
- AnchorFast 100 mm SCH 80 Steel Cable Connection Pipe (photo #3)
- AnchorFast Loop Thimble (photo #4)
- AnchorFast ¾”, 5/8” Stainless Steel Wire Rope Clip/Toque Nuts (photo #5)
- AnchorFast Anchor Pile Domed Nut (photo #6)