The Rotterdam Roofscape

Transcriptie

1 Warsaw How cities respond to climate change The Rotterdam Roofscape Municipality of Rotterdam Urban Development Department Msc. Marloes Gout

2 Changing Climate Sea level rise Heat waves Results: Floodings Salinization Urban Heat Island Effect Health problems Extreme percipitation Droughts 2

3 Water from 4 sides Sea level rise Precipitation Ground water Rivers 3

4 Approach of the city of Rotterdam Transition of more than 10 years Water Sensitive Rotterdam

5 Approach of the city of Rotterdam 2019 and beyond Water Sensitive Rotterdam Delta Programma Rotterdam National Adaptation Plan 5 Focus on new issues

6 Communicatie en informatie Co-benefits Green Roofs Main benefit: rain water retention Esthetics Green image/csr Urban Developement Department Lifespan extention Biodiversity Cooling Value Liveable city 6

7 The Rotterdam Roofscape - Ambition 7

8 Sustainable Roofs- Types 8

9 Duurzame Daken - Toekomstvisie 9

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11 Duurzame Daken - Toekomstvisie

12 Background Rotterdam Roofscape 2008: Green Roof Program (water retention) m2 green roofs (15/25 liters per m2 = +/- 4 mln. liters extra water buffering) 2016: 1km2 Multifunctional Roofscape in the city centre (integral approach) Results 2018: m2 green roofs m2 yellow roofs m2 blue roof m2 red roofs Total: m2 multifunctional roofs city wide 12

13 Examples Multifunctional Roofs in Rotterdam 13

14 Het Dakpark (Rooftop Park) Rotterdam Roof park of Rotterdam m2 park Biggest rooftop park of Europe Multi-functional city zone co-created by residents 14

15 Warshaw University Library Roof garden m2 First and largest roof garden established in Poland. Varied garden spaces, test site for biodiversity 15

16 Erasmus Medical Centre (MC) m2 rooftop gardens (12.500m2 green roof in total) Research of health benefits of green roofs Realised via crowd funding 16

17 Roofs 17

18 Collaboration STICHTING GEBOUW DE HEUVEL

19 Different levels & Actors Robert Fruinstraat (RF) Peperklip (P) De Heuvel (H)

20 Urban Roofs European subsidy Urban Roofs Main goal: convince private parties to invest in sustainable rooftop development Social Cost Benefit Analysis(SCBA): gain insight in value of multifunctional roofs 20

21 Urban Roofs 21

22 Marloes Gout Sustainability consultant City of Rotterdam Urban Developement Department Eveline Bronsdijk Sustainability consultant City of Rotterdam Urban Developement Department 22

23 Resultaat en ambities 2018: m2 groen dak in Rotterdam Ambitie: 1km2 duurzame dakenlandschap in het centrum 23

24 Co-benefits Urban Heat Island Effect Scientific discussion: Research C.M. Ravesloot; green roof at least 6 % reduction on cooling capacity and energy use(for standard insulated office building) 3 degrees reduction surface temperature green roof black roof (improvement quality night s rest) PhD research TU Delft Hot Topic ; during peak heat wave green roof heats up surrounding temperature. Cooling green roof not proven... 24

25 De Dakakker Rooftop Farm Rotterdam 2018: m2 groen dak in Rotterdam Ambitie: 1km2 duurzame dakenlandschap in het centrum 25

26 Kansen in Rotterdam 14,5 km 2 plat dak 26

27 Interessante links Links Rotterdam.nl/groenedaken Multifunctioneledaken.nl samen-voor-duurzaam-waterbeheer 27

28 Bijdragen vanuit het waterschap Delfland Subsidie voor klimaatadaptatie Hoogheemraadschap 28

29 Groen dak 29

30 Groen dak met zonnepanelen Zonnepanelen leveren een hoger rendement in combinatie met groen Zonnepanelen zorgen voor schaduw, meer (bio)diversiteit op het dak 30

31 Polderdak Tot wel 2.5 keer zo veel waterberging als een groen dak Kan dynamisch of statisch water afvoeren 31

32 Inhoud Programma Groene Daken Rotterdam Resilient Duurzame Dakenlandschap 32

33 Programma Groene Daken Programma Groene Daken Sinds 2008 Informatievoorziening Subsidieregeling 33

34 Overstromingen 34

35 Bijdragen vanuit het waterschap HHSK Subsidie voor klimaatadaptatie HHSK 35

36 Bijdragen uit Daken-programma Subsidie Zolang de voorraad strekt eindig budget Max. 20/m2 >25l/m2 waterretentie Voorbeeldprojecten Innoveren en experimenteren Wet & regelgeving aanpassen Vraagbaak: of