Q: I live in a first-floor unit in a 344-unit building that opened in 2006. There is a loud knocking when someone turns off the bathtub/shower, dishwasher or washing machine and when the ice maker ...

This is intended just as an addendum to the topic of rigid tubing. We will be running a full fittings article later on. Since I've been asked a few times, though, I just wanted to show briefly a ...