books.gregvan.com Click on This Link to find some interesting books on plumbing and more information about your home. Watch this video to learn more about how they use to build homes, in the late 1950s. It’s not uncommon to find an angled vent pipe in older homes, but you’re probably not going to see them in newer ones. Watch more of our videos, to find some interesting information about your home and don’t forget to visit our websites.