From time to time, most builders encounter the need to hold back soil. Whether you have to terrace a sloped yard, support a parking lot, or level an area for a pond and waterfall, a retaining wall is the tool for the job. Even to simply level a building site, you may have to cut fill out and support the slope that remains, or fill in an area and hold the fill in place.

In the past, the builder's choices were a timber wall, a dry-laid stone wall, or an engineered concrete retaining wall (see "Retaining Wall Choices," below). But these days, many contractors prefer to use segmental block retaining walls. Every material has its advantages and disadvantages, of course. But for many jobs, segmental block...

or Register to read the full article.