In my expierence repairing frozen pipes over the decades, unless you temper the heat around the pipes, they will freeze. Bundled pipes in foam at 10...
C is the vent for the tub, and the pipe extending horizontally is the trap arm before the p-trap is glued on. We always install the trap "after" the...
Any bowl needs to set flat to the floor without rocking. Shim as needed, though we tend to shim the back and try to pin the front of the bowl to the...