![]() ![]() If you need help making any decisions or just want to chat about retaining walls for a while, please contact us. The choice between large and small block units is not always an easy one. Don’t overlook a good engineer as an experienced engineer will save you money while helping decrease your risk and increasing the lifespan of your wall system. Small blocks are often best for small projects, while large blocks are best for durability and installation speed. Lack of heavy equipment capable of handling the large block units.Higher material cost per area of retaining wall face.Difficult access to the proposed wall location.Some things that might prevent a large block wall from being your best option are: Large blocks are less commonly found on residential projects, and more common on commercial, industrial, and municipal projects. If speed and durability are your main goals, a large block is likely your best choice. The durability of large block units is typically better.Large retaining wall projects can be completed quickly with large blocks.Only 1-3 people are needed to install a large block wall with the right equipment.Extremely tall walls are possible when using geogrid reinforcement.Taller walls can be built without requiring geogrid reinforcement.The choice of a large block units has many advantages: ![]() ![]() Each of these products also has their advantages, which you can find more information on here. Some commonly found large blocks in Calgary include Redi-Rock, Verti-Block, and Magnumstone. If equipment large enough to move heavy concrete blocks is available, large block retaining walls can be the quickest to build, the strongest, and sometimes even the cheapest option for your project. Take a look at our post on small block options here, if you think a small block wall is the right fit for your project. A long-lasting and great-looking wall can be constructed by a first-time wall builder if you have an experienced geotechnical engineer on your side to help you through the process. If you have an experienced retaining wall contractor that has the right equipment to handle large block units, they can very often be a stronger, and possibly more economical solution. While small blocks are great if you want to build a retaining wall without any heavy equipment, they can also be so approachable that an inexperienced installer might create a messy and expensive mistake. Overlooking the requirement for geogrid can cause a new wall to fail within a very short period of time.Consistent subgrade soil conditions are critical to prevent “frowns” or “smiles” in the retaining wall (poor subgrade soil or localized rigid structures that cause one section of blocks to settle more or less than the rest of the wall).Deformations or installation mistakes are more visible in a small block wall.Without an experienced contractor installing the retaining wall, it is easy to overlook crucial installation details.Unfortunately, there are also some drawbacks that come with selecting small blocks for your project: ![]()
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