Q. I’ve seen quite a few failed retaining walls. Many have bulges or have tipped over. What needs to be done to ensure I only do mine one time? I’ve seen photos of walls hundreds of years old that ...

Retaining walls are a necessity if you have a sloped yard or live in a flood-prone area, but it's necessary to find a design that's actually functional.

Lowe Larretta is former lead editor for Forbes Home, covering all things related to home improvement and good design. She previously worked in the decor and lifestyle spaces for digital publishers ...