Ginahoy
Building Systems Engineer
As mechanical systems designer, I work with plans a lot. I often see 2x6 interior walls for plumbing but it's not consistent. I think architects and designers learn someone along the way to show 2x6 in certain situations but don't really understand when to apply, so they overdo this detail.
In a single floor home, the only wall I imagine might need to be 2x6 would be behind a washing machine, to accommodate one of those recessed plastic drain panels. Even then I don't see why that wouldn't work with a 2x4 wall. In a two floor home, I can see how the primary drain from the upstairs fixtures would require a 2x6 wall on the lower floor. But I'm just guessing.
Please elucidate me
In a single floor home, the only wall I imagine might need to be 2x6 would be behind a washing machine, to accommodate one of those recessed plastic drain panels. Even then I don't see why that wouldn't work with a 2x4 wall. In a two floor home, I can see how the primary drain from the upstairs fixtures would require a 2x6 wall on the lower floor. But I'm just guessing.
Please elucidate me