A #7 reinforcing bar has a diameter of what measurement?

The correct measurement for a #7 reinforcing bar is 0.875 inches in diameter. In the context of reinforcing bars, the numbers assigned to the bars indicate their nominal diameter in eighths of an inch. Therefore, to determine the diameter of a #7 bar, you take the number 7, multiply it by 1/8 inch, resulting in 7/8 inch, which converts to 0.875 inches.

Understanding this classification system is crucial in construction and pool design, where specific measurements are vital for ensuring structural integrity and compliance with safety standards. The sizes of reinforcing bars are standardized, which helps engineers and builders in selecting the right materials for reinforcing concrete structures, including pool decks and walls.