Challenges with respect to surface design

Water-sensitive design of street spaces

The design of urban streets must consider not only their traffic function but also requirements for the drainage of built-up areas. The expected effects of climate change require a “water-sensitive” approach to designing street spaces that comprises the controlled above-ground emergency run-off during heavy rainfall events as well as retention and infiltration of stormwater and treatment of polluted road runoff. Previously implemented decentralized stormwater management systems relied on a small-scale, “parcel-based” drainage pattern that would no longer be capable of preventing floods during...

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