A drainage cell is a lightweight, high-strength modular drainage panel designed to efficiently collect, store, and channel excess water away from structures and landscaped areas. Typically manufactured with an interconnected honeycomb or cuspated structure, drainage cells create continuous drainage pathways beneath soil, paving, and waterproofing systems. This allows water to flow freely toward designated drainage outlets while supporting heavy loads from soil, vegetation, pedestrians, and vehicles. Drainage cells are widely used in green roof systems, rooftop gardens, podium decks, retaining walls, planter boxes, sports fields, and landscaped areas where proper water management is essential. In green roofs, they retain a small amount of moisture for plant growth while allowing excess rainwater to drain efficiently. Behind retaining walls, drainage cells reduce hydrostatic pressure by directing groundwater away from the wall, improving structural stability. Beneath podium decks and landscaped terraces, they protect waterproof membranes from prolonged water exposure while preventing waterlogging. Drainage cells are also used around foundations, basements, tunnels, and underground structures to improve subsoil drainage and extend the life of construction projects.
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