What is the required distance of undisturbed soil between two trenches for plumbing systems?

The requirement for maintaining a distance of 5 feet of undisturbed soil between two trenches for plumbing systems is based on the need to ensure the structural integrity and functionality of the piping system. This distance helps to prevent issues such as soil movement, which can stress and damage the pipes, as well as reduce the risk of any cross-contamination between systems.

When trenches are dug too closely together, there is a higher likelihood that the soil will be disturbed in a way that may compromise the support and stability of the plumbing installations. Additionally, maintaining adequate separation serves to facilitate proper drainage and reduce the potential for interference between different systems, which is essential for both safe and efficient plumbing operation.

Overall, the 5-foot requirement is a standard practice aimed at ensuring the longevity and performance of plumbing systems within their designated trenches.