How to Form a Concrete Wall With Snap Ties: A Step-by-Step Guide

Constructing a concrete wall with snap ties is a practical and efficient method that ensures a sturdy and durable structure. Snap ties, also known as tie wires or wall ties, are essential components in the formwork system when creating vertical concrete walls. This innovative technique involves the use of metallic snap ties, which securely fasten the form boards together, resulting in precise and uniform concrete placement.

What Are Snap Ties Used for in Concrete?

These ties are designed to securely hold the formwork in place during the pouring and curing process, ensuring that the concrete sets correctly. They’re typically made of steel and are inserted into pre-drilled holes in the form panels. Once in place, the tie is snapped onto the form panel, providing a strong and secure connection.

Snap ties help to maintain the proper alignment and spacing of the form panels, ensuring that the concrete wall is poured accurately to the desired dimensions. They also help to prevent the form panels from bulging or bowing out during the pour, which could result in an uneven surface or compromised structural integrity.

In addition to their structural function, snap ties also play a role in the ease of removing the formwork. Because they’re designed to snap off easily, they make the process of stripping the forms much quicker and more efficient. This saves time and labor costs, as workers can quickly move on to the next phase of the construction project.

Snap Ties are an essential component in securely locking Lumber or Plywood formwork. These ties are specifically designed with a nominal 1″ breakback feature and include an anti-turn device to ensure proper breakage once they’ve served their purpose. In addition to the standard snap ties, there are also variations such as Long End, Short End, and Odd End ties that cater to different plywood formwork needs.

What Are Snap Ties for Plywood Forms?

Snap Ties are indispensable elements in the construction industry as they play a significant role in securely locking lumber or plywood formwork. These ties are specifically designed to ensure the easy and efficient assembly of formwork, making the construction process smoother and more streamlined.

One of the key features of snap ties is the incorporation of anti-turn devices, which are essential for the proper functionality of these ties. These devices prevent the ties from rotating or turning during use, ensuring that they break off easily when required. This crucial aspect helps maintain the structural integrity of the formwork and allows for seamless removal after concrete pouring.

Snap ties for plywood formwork come in different variations to accommodate different construction needs. Long end snap ties, short end snap ties, and odd end snap ties are readily available to cater to specific formwork requirements. This diverse range of snap ties allows construction professionals to choose the most suitable option based on the specific dimensions and layout of the formwork.

The durability and reliability of snap ties make them a preferred choice among construction industry professionals. These ties are engineered to withstand the pressure and load exerted by the concrete during the pouring process, ensuring that the formwork remains intact and withstands the rigors of the construction site. With their robust design and superior construction, snap ties are built to last, offering long-term value and peace of mind.

Their ability to lock lumber or plywood formwork with ease, coupled with their anti-turn devices and varying length options, make them invaluable in the construction industry.

When installing snap ties, it’s crucial to drill the correct size hole in plywood for optimal performance. By breaking the surface continuity of the wire, the water resistant snap tie prevents water seepage. To accommodate the snap tie head, it’s recommended to drill holes 1/8″ larger than the diameter of the head. Typically, a 5/8″ drill bit is adequate for this purpose.

What Size Hole Do You Drill for Snap Ties?

When it comes to drilling holes for snap ties, it’s important to have the right size to ensure a secure and effective connection. The water resistant nature of snap ties is particularly important in preventing water seepage along the tie, which is why the drilling process is crucial. To allow for the snap tie head to be firmly secured in place, it’s recommended to drill holes in plywood that are 1/8″ larger than the size of the snap tie head.

Typically, a 5/8″ drill bit is deemed sufficient for this purpose. The slightly larger hole ensures that the snap tie can fit snugly in place without any excessive force or potential damage to the material. By creating a small gap between the snap tie head and the drilled hole, the continuity of the wire is interrupted, resulting in a more effective water-resistant seal.

It allows the snap tie to securely anchor the formwork in place, preventing any shifting or movement during concrete pouring and curing. The use of the recommended drill bit size guarantees that the snap tie head can easily slide in, providing a reliable connection between the formwork and the concrete structure.

Furthermore, drilling holes of the correct size also facilitates easy installation and removal of the snap ties. This saves time and effort during the construction process and contributes to the overall efficiency and productivity of the project.

A 5/8″ drill bit is commonly used to create holes that are 1/8″ larger than the snap tie head, allowing for easy installation and removal.

Tips for Drilling Holes for Snap Ties to Ensure Accuracy and Proper Alignment.

When drilling holes for snap ties, follow these helpful tips to ensure precise and aligned results. Start by measuring and marking the locations where the holes need to be drilled. Use a drill bit that’s specifically designed for the diameter of the snap ties. Make sure to hold the drill straight and apply consistent pressure for a cleaner hole. It’s also crucial to use a level or plumb bob to ensure the holes are vertically aligned. By following these simple guidelines, you can achieve accurate and properly aligned holes for your snap ties.


The spacing for concrete snap ties depends on various factors, including the type of formwork and the strength of the studs used. Generally, a common recommendation is to have 16-inch vertical spacing and 24-inch horizontal spacing for snap ties. However, for specific applications and different materials, alternative spacing like 12-inch vertical and 12-inch horizontal may be required. It’s crucial to follow the guidelines provided by the formwork manufacturer and consider the structural capabilities of the studs being used.

What Is the Spacing for Concrete Snap Ties?

When it comes to concrete snap ties, the spacing is an important factor to consider for optimal results. The recommended spacing for these ties typically depends on the dimensions of the vertical and horizontal elements. For example, a common suggestion is to space the snap ties at 16 inches vertically and 24 inches horizontally. This spacing allows for proper support and reinforcement during the concrete pouring process.

However, in some cases, a tighter spacing may be required. For instance, a spacing of 12 inches vertically and 12 inches horizontally can be used. This tighter spacing is often used when additional strength and stability are necessary, such as in high-stress areas or when working with heavy loads. It ensures that the concrete forms are securely held in place and minimizes the risk of any shifting or movement during the curing process.

It’s important to note that these recommendations are specifically based on the use of 3/4″ Plyform Class I and 2×4 S4S studs, such as Douglas Fir-Larch, Southern Pine, or an equivalent material. These materials must have a minimum allowable fibre stress of 1,200 psi to achieve the desired results. It’s crucial to select high-quality materials that offer sufficient strength and durability for the specific project requirements.

This, in turn, helps to promote the structural integrity of the finished concrete structure. Additionally, using appropriate materials with the necessary strength specifications further enhances the overall performance and longevity of the concrete forms.

Whether adhering to the typical 16″ vertical x 24″ horizontal spacing or opting for a tighter 12″ vertical x 12″ horizontal spacing, it’s essential to use suitable materials and follow best practices for reliable and long-lasting results. Taking these factors into account will contribute to the successful completion of the project and ensure the durability and stability of the concrete structure.

Factors to Consider When Choosing Concrete Snap Tie Spacing

When choosing concrete snap tie spacing, there are several factors that need to be considered. The distance between snap ties plays an important role in ensuring the strength and stability of the concrete formwork. It’s crucial to consider factors such as the height of the concrete wall, the weight of the concrete, the pressure exerted during pouring, and the type of formwork being used. By carefully considering these factors, one can choose the appropriate snap tie spacing to prevent potential issues such as form failure or concrete honeycombing.


It’s essential to follow the correct steps, ensuring proper placement of the snap ties to create a strong and durable wall. Attention to detail and adherence to safety guidelines is crucial to avoid any potential hazards. Remember to consult experts or professionals when needed and always prioritize safety throughout the construction process.

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