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Up to four tiers (1.6m or 5′-3″) can typically be erected without further soil reinforcement. When additional mechanical soil reinforcement is used in conjunction with Lock & Load™ “Stones” height is only limited site considerations.

This will depend on local building codes. Usually engineered designs are required for walls exceeding a set height. It is always a good idea to have a professional design based upon a site specific geotechnical report.

Not usually, the standard wall batter is 10V/1H because the “Stones” do not directly rest upon the components of the tier below. This allows each tier to act independently and provides significant geotechnical advantages, especially in seismic sensitive regions.

Yes, If site constraints allow for horizontal offsets between tiers.

Any type of engineer approved material may be used. Most typical are geotextile materials or welded wire fabric but Lock & Load™ walls can also be designed using deadman anchor or other tiebacks.

The single most important factor is the proper preparation and grading for placement of the base tier “stones”. Accurate layout and placement of the base tier components allows the subsequent rows of components to be erected quickly and easily.

Yes, the components can be handled by hand but the hand truck facilitates movement and accurate placement.

No, each “stone” is free standing ‘retention module’ with successive tiers setting slightly behind the stones. The footings are usually offset a half-panel width between tiers in a bonded configuration. This design produces strong geotechnically stable retaining walls.

As with all soil related projects the selection and compaction of backfill is important as is insuring proper drainage and final grading.

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