The width of backfill area will vary depending on your specific project, but expect to fill 12 inches behind the back of installed.
How To Use Plastic Retaining Wall Pins. Lay in a perforated plastic drainpipe on the gravel (holes down). How to build an interlocking retaining wall.
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We have an old retaining wall that is about four feet tall on the edge of our property. Build a strong, stylish retaining wall without mortar. Building a retaining wall is important to help keep landscape soil from eroding as a result of the elements.
Plastic pins under different normal loading conditions.
They not only prevent erosion, but also create flat space for a garden bed, patio or a 2. Use stakes to mark the front edge of the wall at the ends and at any corners or curves. Use landscape marking paint to outline the area where the retaining wall will be built. Building a retaining wall is important to help keep landscape soil from eroding as a result of the elements.