If you poke a drinking straw into your soft drink and place a finger over the opening, you can lift the straw out and the liquid in the straw will stay. Remove your finger and the liquid runs out.

A: For waste water to properly drain, there must be air behind the water, which requires a plumbing vent above the roof. In some instances, an automatic air vent or air admittance valve can be ...

When plumbing vents get ice capped, toilets won’t flush right, water may drain from sinks more slowly, and sewer gas could enter your home through drain traps that no longer have enough water in ...

I really enjoyed the challenge of the three-dimensional problem-solving you have to do to run all the drain and vent pipes in a typical home. I wondered how it all worked and was lucky enough to ...