Final answer:
The Nominal Size of a #6 bar is 3/4 inches, and for a #8 bar, it is 1 inch. These measurements are crucial for construction and engineering, particularly in concrete reinforcement.
Step-by-step explanation:
The Nominal Size of a reinforcing bar (rebar) is a way to identify the bar's diameter in eighths of an inch. Therefore, for a #6 bar, the nominal size is 6 eighths of an inch or 3/4 inches (0.75 inches). And for a #8 bar, the nominal size is 8 eighths of an inch or 1 inch (1.00 inches). These sizes are widely used in construction and engineering particularly when dealing with concrete reinforcement.