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Drainage is one of the most critical aspects of retaining wall construction. Without a way for water to escape, pressure builds behind the wall, increasing the risk of movement or collapse.
A typical drainage setup includes gravel backfill, a perforated drainage pipe at the base, and weep holes to let water escape. Some systems may also include waterproof membranes.
The type of soil on your site affects drainage needs. Clay-heavy soil holds more moisture, which increases pressure. Sandy soil allows for better flow but may require erosion control.
Landscaping above the wall should direct water away from its base. Avoid planting water-hungry species directly behind the wall where roots and added weight could create long-term issues.
Getting drainage right at the start will protect your investment and reduce the need for repairs. It’s not just about longevity, it’s about safety and function too.
Drainage is one of the most critical aspects of retaining wall construction. Without a way for water to escape, pressure builds behind the wall, increasing the risk of movement or collapse.
A typical drainage setup includes gravel backfill, a perforated drainage pipe at the base, and weep holes to let water escape. Some systems may also include waterproof membranes.
The type of soil on your site affects drainage needs. Clay-heavy soil holds more moisture, which increases pressure. Sandy soil allows for better flow but may require erosion control.
Landscaping above the wall should direct water away from its base. Avoid planting water-hungry species directly behind the wall where roots and added weight could create long-term issues.
Getting drainage right at the start will protect your investment and reduce the need for repairs. It’s not just about longevity, it’s about safety and function too.
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