I've built a new interior wall in my bathroom that runs parallel with the ceiling and floor joists. The wall is about 7 feet long and 9 feet high. I read through my handy DIY book and built the wall accordingly making cross-joists in my attic every 16 inches to secure the top plate to.
For the bottom sole, I took my plumb-bob and lined up the bottom plate screwing it down to the 3/4" OSB sub-floor at least every 16 inches (probably more like every 10"). The sole is about 3" to the right of bottom joist, but not exactly lined up so it's not secured to it. I couldn't add another joist or cross-joists below because of plumbing in the way. Is this an issue for a non-load bearing wall?
This is actually a shower wall that has 1/2" hardibacker secured to it.