Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep ...

2. To avoid soil shifting and damaging the wall, retaining walls should rest on cut or undisturbed ground, not landfill, and have a footing roughly two times the width of the wall and as deep as ...

Make sure you purchase special interlocking retaining wall blocks at your home center store. These blocks fit together when stacked so they will not tip over from the weight of the soil behind them.

Make sure you purchase special interlocking retaining wall blocks at your home center store. These blocks fit together when stacked so they will not tip over from the weight of the soil behind them.

Retaining wall blocks create a more formal look, while using railroad ties or landscaping timbers appears more rustic. ... It should be about one inch deep for each eight inches of wall height.