What is the required psi for a rough-in test on a building's drainage system?

For a rough-in test on a building's drainage system, the required pressure is 5 psi. This pressure is established to ensure that the drainage system is watertight and can properly handle the discharge of waste without any leaks. Conducting this test at 5 psi helps identify any potential issues early in the construction process, allowing for timely repairs and adjustments. Maintaining this standard is crucial for ensuring the overall integrity and functionality of the plumbing system, as it ensures that under normal operating conditions, the system can withstand any fluctuations in pressure without failure.