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Is an HDPE Dimple Drainage Board Suitable for Retaining Walls?
Yes, HDPE Dimple Drainage Boards can be suitable for many retaining wall applications. Soil behind a retaining wall may retain water, particularly after rainfall or in areas with poor natural drainage. Excess water can increase pressure against the wall and contribute to moisture-related deterioration. A correctly designed drainage system can help direct this water toward suitable outlets. The dimpled board creates a drainage gap and may also protect the waterproofing layer. Nevertheless, it does not replace the need for structural design, free-draining backfill where specified, or properly designed drainage pipes. Engineers should select the board according to site conditions and project requirements.
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