What length of #4 rebar is required at interior corners of the concrete slab foundation for Wendy's Restaurant?

The correct choice indicates that 36 inches of #4 rebar is required at the interior corners of the concrete slab foundation for Wendy's Restaurant. This requirement aligns with standard practices in reinforced concrete design to ensure sufficient structural integrity and support at critical stress points, such as corners where concrete is more prone to cracking or other forms of failure under load.

Using 36 inches of rebar in these locations allows for adequate embedment into the concrete to withstand tensile forces and contribute to the overall stability of the structure. Proper reinforcement helps to maintain the alignment and load distribution across the slab, which is particularly important in areas experiencing concentrated stress like interior corners. This length also allows for sufficient overlap with other reinforcing elements, ensuring a continuous load path throughout the concrete structure.

Other lengths could be insufficient for achieving the desired strength and stability at these critical points, highlighting the importance of adhering to established construction codes and recommendations for rebar placement in concrete foundations.