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Outside 90-degree Corner Construction

7:56
42:32
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At 7:56 in

Retaining Wall Skills: Beginner to Advanced

What happens here

This step focuses on building an outside 90-degree corner. The key is to use half-units (blocks split in half). When splitting blocks, always flip them upside down before placing them to hide any mold marks. For the outside 90-degree corner, use one half-unit and flip it upside down to create a clean, aesthetically pleasing corner that 'dovetails' together, similar to carpentry joints. It's recommended to build from corners working inwards. The use of specialty blocks is not necessary with Versa-Lok, as standard blocks can be manipulated to achieve desired corner types. Avoid mixing blocks from different batches (mines/mixes/times) to prevent a 'checkerboard' appearance.

Goal: Construct a stable and aesthetically pleasing outside 90-degree corner.

Tools and materials

  • Half-Units — Forming the corner
  • Hammer — Driving pins
  • Pins Versa-Lok — Securing blocks
  • Versa-Lifter Versa-Lok — Lifting and moving blocks