Steel frame formwork systems offer several types of form ties that can be utilized.
1. Coil Ties: Manufactured using steel wire, these ties possess a coiled shape. They are simple to employ and establish a robust connection between the formwork panels. Coil ties can typically be reused and swiftly installed or removed.
2. Flat Ties: Constructed from flat steel bars, these ties are frequently employed alongside plywood or timber formwork. Flat ties are inserted through small apertures in the formwork panels and secured using wedges or alternative locking mechanisms.
3. She-Bolt Ties: Comprised of a threaded rod with a she-bolt at one extremity, these ties are inserted into the formwork and secured with a washer and nut. This tie style provides a sturdy connection and is often used in larger formwork systems.
4. Snap Ties: Offering an uncomplicated and efficient method for securing formwork panels, snap ties consist of two components - a flat tie and a wedge. The flat tie is inserted through the formwork panels, and the wedge is then driven into the tie, securing it in place.
5. Waler Ties: Waler ties serve the purpose of connecting formwork panels to horizontal walers, which are structural elements providing additional support to the formwork system. Typically manufactured from steel, these ties are designed to withstand substantial loads and stresses.
Each form tie type presents its own advantages and disadvantages. The selection of the appropriate tie depends on factors such as the size and intricacy of the formwork system, the required strength and stability, and the ease of installation and removal. It is crucial to choose the suitable form tie that meets the specific project requirements to ensure a safe and efficient construction process.
There are several types of form ties that can be used in steel frame formwork systems.
1. Coil Ties: These are typically made of steel wire and have a coil shape. They are easy to use and provide a strong connection between the formwork panels. Coil ties are generally reusable and can be quickly installed and removed.
2. Flat Ties: These ties are made of flat steel bars and are commonly used in conjunction with plywood or timber formwork. Flat ties are inserted through small holes in the formwork panels and secured with wedges or other types of locking devices.
3. She-Bolt Ties: These ties consist of a threaded rod with a she-bolt at one end. The she-bolt is inserted into the formwork and secured with a washer and nut. This type of tie provides a strong connection and is often used in larger formwork systems.
4. Snap Ties: Snap ties are easy to use and provide a quick and efficient way to secure formwork panels. They consist of two parts - a flat tie and a wedge. The flat tie is inserted through the formwork panels and the wedge is then driven into the tie, securing it in place.
5. Waler Ties: Waler ties are used to connect the formwork panels to horizontal walers, which are structural members that provide additional support to the formwork system. These ties are typically made of steel and are designed to withstand high loads and stresses.
Each type of form tie has its own advantages and disadvantages, and the choice of tie will depend on factors such as the size and complexity of the formwork system, the required strength and stability, and the ease of installation and removal. It is important to select the appropriate form tie for the specific requirements of the project to ensure a safe and efficient construction process.
There are several types of form ties used in steel frame formwork systems, including loop ties, flat ties, wedge bolts, and snap ties. Loop ties are typically used to secure horizontal formwork elements together, while flat ties are used to secure vertical formwork elements. Wedge bolts are used to connect steel frame formwork panels, and snap ties are used to secure formwork panels to each other.
