What is the maximum allowable distance from a fixture to a trap according to plumbing code?

The maximum allowable distance from a fixture to a trap, under plumbing code guidelines, is typically 30 inches for most fixtures. This requirement is in place to ensure proper drainage and to prevent issues such as siphoning or improper venting. When the distance exceeds this maximum, the trap may not function effectively, leading to potential blockages or foul odors due to the loss of water seal in the trap. It is essential for plumbing systems to maintain a reliable trap-to-fixture distance to uphold both functionality and sanitation within the system.