Humans have been building retaining walls for thousands of years to create flat, or gently sloping, terraces on hillsides. A lot of my readers have them on their own property — or need to build one — ...

We wanted to fix our sloped yard without spending a fortune, so we built a DIY boulder retaining wall. It’s strong, simple to build, and blends beautifully into the landscape.

Retaining walls were first created to perform the simple and necessary task of holding back earth. And with good reason: Erosion is a natural process, but when it means soil being washed off your ...

Editor’s note: The Feats of Engineering feature, which runs occasionally in Finance & Commerce, features projects completed by members of the American Council of Engineering Companies of Minnesota.