Georgia Residential Contractor Practice Exam

What is the maximum fall allowed per 100 feet for lines in the Distribution Box Method?

1. 2 inches

2. 3 inches

3. 4 inches

4. 5 inches

The correct answer is: 4 inches

In the context of the Distribution Box Method, the maximum fall allowed per 100 feet for lines is established to ensure proper drainage and prevent issues such as pooling or inadequate wastewater flow. The correct answer indicates that a maximum fall of 4 inches per 100 feet is permissible. This specific fall rate is designed to maintain a balance where water can effectively flow through the system without risking backups or slow drainage, which can compromise the effectiveness of the sewer or drainage system. This guideline also helps to comply with local building codes and regulations, which often dictate these standards to ensure that residential properties have reliable and efficient wastewater management systems. Keeping the fall within this limit aids in avoiding excessive slope, which can lead to erosion of pipes or cause too rapid drainage that may not allow for proper filtration through the surrounding soil. Understanding this maximum fall is crucial for contractors and builders, as they need to design systems that not only conform to regulations but also operate efficiently over time. In contrast, other fall measurements would likely fall outside the recommended standards, potentially leading to complications in the drainage system.