The AnchorFast Retaining Wall System has combined a large block, large footing plate along with an anchor pile and stainless-steel cabling to create the worlds first gridless, modular block retaining wall. The patented short pile anchor and tie down cabling system allows the installer to minimize excavation, eliminate geogrid and imported fill costs, while providing ductility to resist earthquake shaking.
Precast Concrete Blocks: The patented AnchorFast Retaining Wall System is composed of a precast AnchorFast Block, Foundation Footing Plate (Base Plate), Facia Board and Top Cap.
Stainless Steel Cable Tie-Downs: In addition to these precast components, AnchorFast also 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 AnchorFast 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.
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.
Anchor Piles: Short grouted micro-piles/dowels are required to anchor the AnchorFast 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 AnchorFast 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.
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 AnchorFast Retaining Walls.
Geogrid: The AnchorFast Retaining Wall System may also be designed with geogrid to reinforce the upper part of the wall. The presence of the tiedown cables and anchor piles allows the geogrid to be started 9 to 12 feet up from the base of the wall. The geogrid lengths required are generally shorter than for other walls due to the inherent stability of this large block system.
#1. A typical AnchorFast designed retaining wall showing the rear of the wall with typical stainless steel cables and connections to foundation footing plate. Anchor Piles also included below foundation footing.
#2. Typical AnchorFast wall with 3rd row staiStainless steel cable with attachment to foundation footing plate. Note the front and rear anchor piles.
#3. Typical AnchorFast cable connection.
#4. AnchorFast block sitting on foundation footing plate with placement of front and rear anchor piles.
#5. The AnchorFast Retaining Wall System connecting to soil anchors.
#6. The AnchorFast Retaining Wall System incorporating geogrid.
The AnchorFast Retaining Wall System should be designed by engineers experienced in retaining wall design. This requires an understanding of the Geotechnical and Structural engineering principles associated with retaining wall design. Most importantly, the site-specific geotechnical soil properties need to be understood and carefully considered to provide a safe and cost-effective solution.
Only geotechnical and structural engineers experienced with retaining wall design should design AnchorFast retaining walls, and specific limitations are placed on designers by individual jurisdictions.
If you have any questions or concerns about the design or installation of theAnchorFast Retaining Wall System or would like to work with one of our Engineers , please do not hesitate to contact the AnchorFast Team at 1-877-596-0857 or email us.