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Drainage Stone. All walls should include drainage stone, even if they don’t require a drain pipe. Install drainage stone at the back of the retaining wall and extend 12-in behind the blocks. Start the drainage stone near the base of the wall and extend up to within 6-inches of the top of the wall.
Retaining wall drainage is critical. It ensures water does not collect behind the wall, causing it to fail. A quality drainage system collects and redirects rainwater away from the wall. It decreases pressure on the soil around the foundation and within the wall itself, reducing erosion and settlement.
Cut one landscape retaining wall block down to accommodate the drain grate. Screw the drain tile parts together so they won't come apart when they get covered with more rock. Also, drain the tile to daylight at the ends of the walls whenever possible.
Proper retaining wall drainage can be the difference between a sturdy wall and one that leans. Learn how to prevent and mitigate drainage problems.
Here is a step-by-step guide on how to design and install a drainage system for a retaining wall, along with tips and best practices for ensuring the drainage system is properly installed and functioning.
Drainage problems: Clear clogged drains and ensure proper grading around the wall. Erosion : Add soil to eroded areas and consider additional landscaping to prevent future erosion. Leaning : Minor leaning might be corrected by adjusting backfill.
This guide provides instructions for estimating materials for a wall constructed of retaining wall blocks. For instructions on building a wall with concrete blocks (sometimes called cinder blocks) and mortar, see Laying Block.
Segmental block walls and wood retaining walls require drainage to be built concurrently with the wall. In an ideal world, drainage behind a concrete cantilever consists of drainage aggregate running the full length of the wall with weep holes spaced every 6 to 10 feet.
HGTV shares tips and step-by-step instructions on how to build a retaining wall to prevent erosion, break up a large slope or just enhance your landscape.
Drainage pipes, particularly perforated ones, play a crucial role in managing water behind retaining walls. These pipes facilitate the efficient flow of water, preventing its buildup. Proper installation ensures that water is directed away from the wall, minimizing the risk of hydrostatic pressure. Adequate Drainage Design: Aesthetic and Practical.