Galvanised steel posts are known for their high strength and durability. They are best for use in areas that are prone to humidity and moisture due to their anti-corrosion properties. When installed properly, the galvanised steel posts ensure longevity and low maintenance in retaining wall projects.
In this blog, we explain the process for installing galvanised steel posts for retaining wall projects. The information about types of posts and installation requirements, from area measurement to concrete curing time, is provided.
Galvanised Steel Posts and Their Types
Galvanised steel posts are coated with zinc to make them corrosion and rust-resistant. They are most used in projects such as retaining wall building, agriculture projects, and construction projects. Its types includes:
H Posts
H posts are also called H-beams and are used to provide stability and strength during heavy-duty applications. It is mostly used in retaining wall projects, as their H shape allows sleepers to slide in from both sides. H posts have load-bearing capacity, making them suitable for taller retaining walls.
C posts
C posts resemble the letter C and are mostly used at the ends of retaining walls. While C posts are lighter than H posts, they still possess the strength and capacity to bear loads. In retaining wall projects, C posts are used to get a clean finish.
Corner Posts
Corner posts are designed to provide strong support walls at 90-degree angles. It is used to provide support to wall structure while preventing weak spots. Corner posts possess enough strength and durability to deal with soil pressure. They also provide proper stability and professional finishing to the retaining walls.
It is important to consider choosing H posts in case your retaining wall is high and must bear high soil pressure. Similarly, C posts can be ideal for light to medium walls that require clean finishing. Meanwhile, corner posts are best for using as strong support at 90-degree angles to provide stability and a professional finish to the wall building project.
Accurate Measuring and Site Preparation
After choosing an appropriate pole for your retaining wall project, you are required to measure and prepare the site for installing the pole. Accurate measurement is important to provide proper finishing and add durability to the retaining wall. While measuring the wall, it is important to mark the wall line using string and stake lines. The marking and post spacing depend on the height and size of sleepers.
Digging the Correct Footing Depth
It is important to correctly dig the footing depth as it helps steel posts to stay in its place while preventing movement. When digging holes, consider wall height, soil types, and pressure to make sure the post stays in its place. It is important to make the hole firm and tight. You can use concrete to support and firmly place the footing.
Installing Posts and Adding Concrete
Install galvanised steel posts in the hole you dug before. Place the posts properly making it face the proper direction. You may use spirit level or measuring tools to align it perfectly. After securing the posts in its place, use a concrete mix to fill the hole. Use a rod or a shovel to remove an air pocket from the concrete mixture for full contact with the steel.
Drainage Considerations
During retaining wall projects, considering proper drainage installation is critically important. Poor drainage builds up water deposits behind the wall that might lead to hydrostatic pressure. Use a proper drainage pipe behind the sleeper to drain water freely. Also using geo fabric rolls help to protect soil for shifting its position while allowing water to pass freely.
Concrete Curing Time
After completing the retaining wall building process, you must allow the concrete to cure for around 24 to 48 hours. Applying load before curing concrete might lead to failure of the wall as concrete is not properly set. Wait for at least a week before applying full load for optimal structural performance.
Common Mistakes to Avoid
While installing galvanised steel posts during a retaining wall building project, many builders commit mistakes such as:
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Inadequate wall foundation and footing depth
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Improper or inaccurate spacing for installing the post
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Failing concrete to cure properly
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Poor drainage management
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Use of inappropriate backfill materials
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Using an inappropriate fastener
It is important to avoid such mistakes as above to make your retaining wall project long-lasting and durable. During the project, it is important to focus on drainage management, considering appropriate post spacing, curing concrete, and footing depth. Also, using appropriate backfill materials and fasteners helps to provide durability to the project.
Conclusion
Using galvanised steel posts properly during retaining wall projects ensures durability and aesthetic appearance. Choosing appropriate wall posts is important to increase efficiency and effectiveness. When installing a wall, measuring wall length, footing depth, and proper concrete filling is equally important. Contact Austrina Steels for high-quality galvanised steel posts, concrete sleepers, drainage pipes, and geo fabric sheets. These products from Austrina Steels ensure your retaining wall project is long lasting and appealing.
