Which type of venting takes precedence over all other venting tables?

Wet venting takes precedence over other venting methods because it allows for the simultaneous transportation of both waste and vent air within the same pipe. This system efficiently uses fewer materials and space while maintaining necessary air flow to prevent siphoning of traps. Wet venting is advantageous in plumbing layouts, particularly in multi-fixture setups, since it helps minimize vent runs that would otherwise complicate the design or require additional vertical space.

In contrast, the other types of venting typically serve different functions or configurations that do not offer the same efficiency in drainage or space utilization. Negative and positive venting typically focus on maintaining specific pressure balances in the drainage system and may not effectively handle multiple fixtures as seamlessly as wet venting can. Natural venting relies on gravity and airflow and may be limited in its application in modern plumbing systems, especially where multiple fixtures are involved. Therefore, wet venting is recognized as the most effective method in situations where waste and air must be managed together.