University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Fabian Schiefermair
(2020):
Integratives Regenwassermanagement mit Fokus auf vertikale Gebäudebegrünung
Maßnahmenvorschläge für Möglichkeiten der Regenwasserbewirtschaftung an ausgewählten Objekten urbaner Siedlungsgebiete.
Master / Diploma Thesis - Institut für Ingenieurbiologie und Landschaftsbau (IBLB),
BOKU-Universität für Bodenkultur,
pp 231.
UB BOKU
obvsg
FullText
- Abstract:
- Increasing land sealing and the consequences of climate change result in multiple negative implications on civilization, so as an elevating urban heat island effect (UHI), as well as a higher risk of flooding due to heavy rainfall events. This thesis depicts how to counteract these problems by integrative stormwater management (ISWM) with a special focus on using rainwater for the irrigation of vertical building greenery and thereby guiding it back to the natural water cycle in 10 city-center locations in Austria. The following questions will be answered: How high is the degree of sealing on the existing objects and what amounts of rainwater will be channelled into the canal? What kinds of ISWM-measures exist, or which would be suitable for the respective object? How can rainwater be used for the irrigation of the existing vegetation? The results of an inventory evaluation and analysis of the objects shows that only a few ISWM-measures exist at individual objects and that most of the rainwater runoff is discharged into the sewer. An exception is the object in Seestadt-Aspern, where high runoff reduction is achieved by a green roof. Of note, none of the objects use rainwater to irrigate their green walls. For most objects, rainwater harvesting for the irrigation of the greenery would be beneficial. However, the effect of rainwater retention depends strongly on the on-site storage volume and individual demands. Further measures such as unsealing, roof greening, rain gardens or underground infiltration systems could absorb precipitation quantities of up to a 30-yearly heavy rainfall event at some of these objects, depending on their suitability. In summary, the potential to use different ISWM-measures at inner-city objects with vertical greenery is high, but the suitability depends on the given local circumstances. Given their importance for attenuating the UHI and the relief of sewers, the consideration of ISWM-strategies in urban planning is urgently needed.
- Beurteilende(r): Pitha Ulrike
- 1.Mitwirkender: Weiss Oliver