plumbing codes

I am doing this plumbing for my second story, this is the master bathroom. the farthest is the toilet, the middle is free standing tub and the closest is a shower. so my question is am I able to lay by wye down like I am and go straight into it instead of adding a 45 to it? In my head it looks...

I've helped plumb a few houses but am a little rusty.. does this layout look like it would pass inspection? In a basement under slab. 3" from sink to sewage pump to act as a "wet vent". 3" to toilet. 2" to shower with a 2" running over to the sink as it's vent. I would run that up beside the...

I am trying to install a double sink vanity in our master bath remodel. However, when I exposed the pipes to plan my plumbing I ran into a dilemma. How do I tie double sink plumbing into my current plumbing. The issue I have is trying to properly vent and drain the system. In the second photo...

Help please!! Found a leak in the shower valve water supply pipe joint (cpvc to copper), leaking behind the shower panel into the interior of wall of bath. Please see video of leak here: https://drive.google.com/open?id=1RtvFQoFV0uG6X5tSGsVSaXjCxsGcshRi The leak has been stopped. Could not...