I know that studs need metal plates over studs where there is plumbing
too close to the wall. This is to protect a nail going into the
plumbing. I'm wondering about exceptions. What about plumbing
behind the toilet? There is a stud directly behind the toilet where
plumbing is running horizontally. I can't see anyone wanting to put
a nail or screw in the wall behind the toilet. Is a metal plate still
required here?