How high must the discharge pipe from a relief be from the floor?

The correct answer indicates that the discharge pipe from a relief must be installed a minimum of 12 inches above the floor. This height requirement is significant because it helps prevent the backflow of water and ensures that any discharged fluid is directed away from the building's foundation and potential areas of pooling or flooding.

Having the discharge pipe at this specified height also minimizes the risk of interference with other plumbing systems and improves drainage. It is typically designed to ensure safety and proper function of the plumbing system overall. While the specific height of 12 inches is dictated by code to align with safety practices, a higher elevation could potentially also be beneficial in certain circumstances. However, the code has set this minimum height for consistency across installations.

Other height options either do not meet safety requirements or could cause complications with plumbing operations. This standardization across installations helps to maintain a uniform level of safety and effectiveness in plumbing systems.