What are tips for setting and driving sheet piles?
- Prepare thoroughly
- Use the right steel template
- Always mark the template
- Determine panel length
- Set and drive with ball-end leading
- Check if sheet piles are plumb
- Do this process in stages
- Avoid splicing when possible
Sheet piles are a must-have material for many construction projects — they are used for retaining walls, constructing in-ground structures, marine projects, and many more applications.
That said, sheet piles can’t do their job if they are not set and driven correctly on-site. Faulty practices may result in problems and costs that outweigh the initial expense and effort needed to create sheet pile structures.
To help you ensure your team is installing these steel products as they should, use our top eight tips for setting sheet piles. While the conditions, project requirements, and contractor’s methods may differ from project to project, you can use these tips to improve your setting and driving techniques:
Prepare thoroughly
Always check your site and review soil conditions before installing your sheet piles. This is crucial in determining how hard or soft the ground is expected to be once your project starts. If the soil is relatively hard, then your job may perform better with shorter piles or pre-drilling the ground before setting and driving. Likewise, if the soil is soft, you can work with longer, larger sheet piles with ease.
So, always review your site to help your team anticipate the possible driving conditions to adjust accordingly. You can also perform a pile-driving simulation to check if your equipment and materials can do the job correctly.
Furthermore, always inspect your sheet piles before using them. Work only with well-made, undamaged sheets. Any sheet pile with excessive camber or sweep should not be used. And check if it is clear of soil or other debris before setting and driving.
Use the right steel template
Steel templates are another tool that is essential to proper setting and driving. It makes sure that each sheet pile is correctly aligned during the setting and driving phase, eases the installation process, and creates a superior product.
The steel template you use should be of robust construction to align the heavy sheet piles. This template will be used and moved several times at the job site, so it must be solidly constructed to avoid damage during transportation.
Always mark the template
To maintain the right laying width with your sheet piles, it’s important to mark which templates go with each sheet or set of sheets. By doing this, your contractor can keep track if the line being set is following your blueprint or is gaining or losing wall length.
Marking the template is especially important if the sheet piles are being used to create structures like cofferdams, which must be opened and closed, or anchored bulkheads, which need precisely positioned tie-rods.
Determine panel length
The lengths of each sheet pile panel should be determined before setting and driving. The appropriate length will vary depending on many factors, such as soil conditions — wherein harder soil will require shorter panels.
The standard size of sheet piles is usually anywhere between 25 to 45 feet long. Whatever length you settle on, always be sure to mark its length to make identification easier. This will also prevent sheets from being mixed up or interchanged, which will make them deviate from their partnered template.
Set and drive with ball-end leading
When setting your sheet piles, make sure they are right-side-up. When these panels are set with the socket-end leading, then your sheet piles are more likely to experience problems. This is because the socket end can become clogged with soil — and driving them down with the added resistance may damage the sheet pile. We recommend setting and driving the sheet piles with the ball-end leading, as doing so helps you avoid this problem.
If your application calls for the sheet piles to be driven socket-end leading, then placing a bolt (or a similar object) within the socket will create a barrier. This will help minimize clogging.
Check if sheet piles are plumb
As each sheet pile is set and driven, you must check your work. Ensure that each panel is plumb to the one next to it and fully secured within the ground. Do this before moving on to the next sheet pile.
Doing this will prevent costly errors during installation. Otherwise, you might find that your entire structure is out of alignment, and your team has to spend the next few hours uninstalling and driving the sheet piles properly.
Do this process in stages
It’s important to do the whole process in stages, otherwise, your setting and driving are more prone to error, and your sheet piles may go out of alignment. This is especially true if the soil conditions aren’t ideal — i.e. too hard, full of debris and obstructions, etc. If you continue through the process without stopping to check, any deflected section will affect the subsequent piles, resulting in a poorly positioned wall. You likely have to remove these sheet piles and restart the entire section.
So, break the process up into stages. First, position a panel of sheet piles (the ideal is in pairs), then drive the panel down in increments using a defined sequence. Doing this allows the sheet piles to be properly guided by the previous section and lessens the possibility of error. Any deviations will also be easily detected and corrected before severe problems occur.
Avoid splicing when possible
Avoid splicing sheet piles on your job site if you can — otherwise, you’re at risk of splicing two sheet pile sections that do not match. If splicing is required for your project, always speak to your steel manufacturer. Your sheet piles should be cut and match-marked by your manufacturer to ensure each spliced section perfectly fits together.
Key Takeaway
Although the right installation techniques will vary depending on your site and project conditions, using these tips for setting sheet piles will help you avoid errors and make your job more efficient.
In need of high-quality sheet piles? Contact Regan Industrial Sales, Inc. today. We are the leading steel manufacturer and supplier in the Philippines and can supply a variety of sheet piles for your construction project!
