General Contractor Practice Exam

What size of tie wire is recommended to hold a #11 rebar?

1. 1/8 inch

2. 1/16 inch

3. 1/4 inch

4. 3/16 inch

The correct answer is: 1/16 inch

To hold #11 rebar securely, a tie wire size of 1/16 inch is typically recommended. The rationale behind this choice lies in the need to balance strength and flexibility. The 1/16 inch tie wire offers sufficient tensile strength to adequately secure the rebar in place without being overly bulky or difficult to work with. This size is manageable for weaving and twisting around the rebar during installation, which helps maintain the correct spacing and positioning during concrete pour. Additionally, a thinner tie wire such as 1/16 inch can be easily cut and manipulated without requiring heavy tools, making it more convenient for contractors on-site. Tie wires that are too thick, like 1/8 inch or 1/4 inch, can be cumbersome to handle and may not provide the same ease of use, while a size like 3/16 inch is relatively less common and could be overkill for the task at hand, adding unnecessary weight and complexity. Thus, 1/16 inch is favored for its ideal balance for rebar tying applications.