Big block retaining wall systems are constructed from massive, precast concrete blocks that interlock together. These blocks are much larger and heavier than standard retaining wall units, allowing them to create stable walls without needing additional reinforcement for shorter heights.

They are typically used in landscaping projects for soil retention, such as creating terraces, slopes, and garden borders. For taller walls or those subject to heavy loads, geogrid reinforcement can be incorporated behind the blocks for additional stability.