When and how to use different Stonebloc blocks.

This article is designed to provide a brief overview on when different Stonebloc blocks should be used.

Use of 1200 Base Blocks

The 1200 base block, weighing 900kg, is typically utilised as the foundation layer for walls that are over 1.6m in height. Its design allows it to utilise the weight of the block and the compacted backfill on top to increase resistance against sliding. In some cases, two 1200 base blocks may be used for taller walls or when there are surcharges.

Use of 800 Base Blocks

The Stonebloc 800 base block weighs 600 kg and is commonly used as a foundation layer for retaining walls. It is smaller and lighter compared to the 1200 base block. The depth of the block allows it to effectively utilise the combined weight of the block and the compacted backfill on top, which helps to increase sliding resistance for walls that are between 1m and 1.6m high.

Running Bond Pattern

When building a retaining wall with blocks, it is important to use a running bond pattern. This pattern creates a strong bond between the blocks, evenly distributing the weight of the wall and preventing shifting or sliding. It also makes the wall more visually appealing and helps detect any potential issues like cracks or leaning. Maintain the running bond pattern throughout the entire wall for stability and alignment.

Use of 400 Standard Blocks

Standard 400 blocks are commonly used at the start and end of Stonebloc walls to initiate and complete the running bond pattern.

Use of 400 Flat Top Blocks

Flat Top 400 blocks are commonly used at the start or end of the top row of Stonebloc walls to initiate and complete the running bond pattern, providing a neat and polished finish.

Use of Flat Top Blocks

Flat top blocks are an excellent choice for achieving a clean and polished finish on the top of a wall. They are different from capper blocks, which also provide a smooth finish to the wall's top.

Flat tops can be used on gravity walls that are 400, 800, 1200, 1600, 2000, and 2400 high. However, it's important to note that these heights may vary if there is a need to embed the wall.

Use of Capper Blocks


Capper blocks serve the same purpose as flat top blocks, but they are specifically used to provide a finishing touch to a wall in 200mm increments.

‘Half cappers’ are used for the ends of walls.