Which of the following is the minimum number of inches of fall required in ground level?

The minimum number of inches of fall required at ground level is set to ensure proper drainage and prevent issues such as water pooling, which can lead to structural damage or other complications. A fall of at least 6 inches is necessary within the first 10 feet from the foundation. This standard helps in directing water away from the foundation, reducing the risk of soil erosion and moisture accumulation that could compromise the integrity of the building. Proper grading around the foundation is critical for safeguarding against potential water intrusion and maintaining a stable foundation.