What is the diameter of #6 rebar in a bundle?

The diameter of #6 rebar measures 0.75 inches. Reinforcing bars (rebar) are designated by numbers that indicate their diameter in eighths of an inch. Therefore, a #6 rebar has a diameter of 6/8 inches, which simplifies to 0.75 inches. Understanding the sizing system for rebar is crucial for structural engineers and contractors, as the correct sizing impacts the strength and integrity of concrete structures.

In this case, the other options reflect incorrect rebar sizes that do not correspond with the established standard for #6 rebar, making option B the only correct choice. Familiarity with these specifications is essential for proper material selection in construction projects.