Application of"Water-retaining Roofs"in Sponge City Design
By reasonably improving traditional roof greening methods,a novel Low Impact Development(LID)facility—"water-retaining roof",has been developed.This LID facility aligns with the sponge city concept of rainwater retention and meets the requirements of current sponge city design standards.The facility features a simple structural layout,facilitating easy installation and showcasing significant convenience and low maintenance in post-installation operations.It is particularly suitable for commercial projects with low green space ratios where traditional rain gardens cannot be implemented.Typical case studies demonstrate that this LID facility can effectively replace water storage tanks,significantly reducing incremental costs from 500,000 RMB to 86,500 RMB.
Sponge CityLIDWater-retaining RoofIncremental CostRunoff Control
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