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Brage NMBU
Master thesis . 2016
Data sources: Brage NMBU
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Fremtidige klimaendringer og dimensjonering

Authors: Haugom, John Ola;

Fremtidige klimaendringer og dimensjonering

Abstract

Observable changes within the areas and climate we live in, have already taken place. Increasing precipitation is observed all over the globe. The frequency in which the precipitation occurs is also increasing. The trends, which also are visible in Norway, leads to a change in the way we see future problems. In the future, problems related to stormwatermanagement will greatly succeed the numbers we see today. Preparing for future situations and probable flooding is important. Todays’ standards and norms will with the future in mind need revising. Costs related to these upgrades will not be cheap, and even more so not easily swallowed by the great masses, which the installments protect. The water- and wastewater treatment sector in Norway are already under massive pressure with 1053 billion Norwegian kroner in investment costs in the future to come. A great portion of todays’ stormwatersystems is not even capable of handling current amounts, and will become greatly outsized by future demands. Strategies for handling increasing amounts of stormwater needs compiling. Local stormwatermanagement becomes greatly more important in the years to come. At Trekanten, a suburban area in Kristiansand - Norway, five apartment buildings are in the planning process. Innovative, green solutions are in the focus. Construction of the apartment buildings will take place on two different levels. The bottom level will house a grocery store and parking spots for the residents, and the second level constructed as an intensive green roof solution. For this intensive green roof solution, there are two possible suggestions. One cost efficient, conservative alternative and one with thicker soil and increased attenuation capacity. The possibility of open solutions for stormwatermanagement will also be present. The analysis of changes correlated with climate and increased cases of precipitation, and the effects of this development on the project in Kristiansand. Some of the problems related to increasing stormwater and precipitation are discussed. With the challenges in mind, recommendations for future situations and for the project in Kristiansand will be made.

Klimaendringene har allerede påført observerbare endringer i områdene vi lever i. Mer intensiv nedbør som opptrer stadig hyppigere blir observert over store deler av verden. Også i Norge sees denne problematikken. I fremtiden vil problemene knyttet til flom og overvannsmengder bli langt større enn de vi ser i dag. For å forberede oss på fremtiden er det derfor viktig at dagens løsninger utformes for kommende vannmengder. Dette innebærer at dagens standarder bør oppdateres og dimensjonerende nedbørsmengder og faktorer endres. Dette vil imidlertid ikke bli gratis. Vann- og avløpssektoren i Norge står allerede foran et enormt investeringsbehov i årene som kommer. I fremtiden må 1053 milliarder investeres for å fornye dagens infrastruktur. Store deler av dagens overvannssystemer takler ikke dagens situasjon. Det er derfor viktig at riktige beslutninger tas og strategier utformes for å takle kommende utfordringer. Dette innebærer overvannsplanlegging, og utforming av strategier for å takle økte vannmengder. Lokal overvannshåndtering er viktig for å sikre beskyttelse mot flom og økte nedbørsmengder. Ved Trekanten i Kristiansand skal det i nær fremtid bygges nye leiligheter. Innovative løsninger vil bli vektlagt. Blokkleilighetene vil anlegges i to nivåer hvor et av dem vil være en grønn takløsning. To mulige alternativer bli foreslått. Det ene et konvensjonelt, kostnadseffektivt alternativ, mens det andre legger opp til økt jordtykkelse, et mer integrert og fluid landskap og ikke minst økt fordrøyningspotensiale og delvis også åpne løsninger for håndtering av overvann. Det blir sett på hvordan klimautvikling og økt avrenning i fremtiden vil påvirke situasjonen ved Trekanten. Det blir gjort fremstillinger av overvannsmengder som økt avrenning potensielt kan føre med seg, og på bakgrunn av dette gitt anbefalinger til fremtidig dimensjonering.

M-VM

Country
Norway
Related Organizations
Keywords

Increased runoff, VDP::Technology: 500::Environmental engineering: 610, Climate change, runoff coefficient, Stormwatermanagement

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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