What is the function of a Form Tie in concrete construction?

• A. To create decorative patterns in concrete
• B. To hold the forms of concrete walls against lateral pressure
• C. To insulate the concrete formwork
• D. To provide structural support to beams

Answer: (B)

In concrete construction, the function of a Form Tie is essential for maintaining the stability and integrity of the formwork during the curing process. Specifically, Form Ties serve to hold the forms of concrete walls against lateral pressure exerted by the wet concrete. When concrete is poured, it exerts significant hydrostatic pressure, which could cause the formwork to distort or fail if not appropriately restrained.

By using Form Ties, the forms are secured at a certain spacing, effectively preventing them from bowing outward or collapsing under the load. This not only ensures that the concrete is poured correctly into the desired shape but also provides assurance that the walls will have the proper thickness and dimensions as designed.

The other options, while related to different aspects of concrete construction, do not accurately describe the primary role of a Form Tie. For example, creating decorative patterns or insulating formwork pertains to different methods or materials used in construction, while providing structural support to beams relates to different components of a structural system. Thus, the primary and correct function of a Form Tie is specifically to hold the forms against the lateral pressures of the poured concrete.