Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 to 8 ...

Outdoor decorating or “hard-scaping” with concrete paving and retaining-wall products has taken a deliberate step backward–to some popular styles of the past, that is. Some manufacturers of concrete ...