Which statement best describes the function of rebar ties?

• A. To seal joints between bars.
• B. To mark bars for cutting.
• C. To join bars with a specific joint.
• D. To secure bars together to prevent movement during concrete placement.

Answer: (B)

Rebar ties are used to hold reinforcement in its correct position during concrete placement. By twisting wire around intersecting bars, they secure the bars so they don’t shift when the concrete is poured and vibrated, preserving spacing, alignment, and the intended structural geometry.

They aren’t meant to seal joints between bars, mark bars for cutting, or perform the actual joining of bars. The tying keeps everything in place while the concrete cures, and the true connection between bars comes from overlaps (lap splices) or welds as designed.