What is a typical measurement for an "A" dimension in a 2 pipe system with traps?

In a two-pipe system that incorporates traps, the "A" dimension typically measures the distance from the trap to where the pipes are connected. This dimension is critical for ensuring proper drainage and function of the traps and pipes within the system.

28 inches is a common standard for the "A" dimension because it allows adequate height for the trap to function effectively while also conforming to industry expectations for clearances around the pipes. This height helps to prevent backflow and ensures that the traps operate efficiently, effectively moving condensate without causing blockages.

Other measurements, such as 25, 30, or 32 inches, may not align with established practices and could lead to inefficiencies in the system. For example, a measurement that is too short might not allow for adequate drainage, while one that is too long could complicate installation and maintenance without providing significant benefits. Thus, using 28 inches as the "A" dimension is regarded as the optimal choice based on these operational considerations.