Rotterdam, ZH turns flat rooftop glut into resilient infrastructure with Multifunctional Rooftops
Rotterdam, ZH Multifunctional Rooftops Infrastructure
Local officials viewed its 18.5 kilometers of flat roofing as an underutilized asset. Multifunctional Rooftops began with color-coded roofs for water retention (blue) and solar panels (yellow). Remote valve controls on blue roofs allowed water distribution during rainstorms. The pilot expanded to seven different roof types by 2021 including green for biodiversity and orange for mobility. Rotterdam also developed an online tool for evaluating the best uses of a residential or commercial rooftop.
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