Mot en blågrønn eiendomsutvikling?

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Mot en blågrønn

eiendomsutvikling?

Stresstesting av Blågrønn Faktor

på utvalgte case studier i Bærum Kommune

Helene Aamlid Pedro Ardila David N. Barton Jayne Elizabeth Betina Halvor W. Ellefsen Peter Horvath Anna Kross Maris Mänd

AHO 2019 ISBN 978-82-547-0324-3

AHO RAPPORT 01 2019

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Forord

Dette arbeidet er del av forskningsprosjektet Urban EEA (no. 255156/RI). Urban EEA er et samarbeid mellom Arkitektur og designhøgskolen i Oslo (AHO), Statistisk Sentralbyrå (SSB) og Norsk Institutt for Naturforvaltning (NINA). Rapporten fokuserer på verktøy og metoder for kartlegging og anvendelse av «Blågrønn faktor» (BGF) basert på syv case-studier i Bærum Kommune. Vi takker Norges forskningsråd for finansieringen, Bærum kommune, AHOs studenter for arbeidet samt Karl Otto Ellefsen og Espen Aukrust Hauglin for innspill underveis.

Sitering av arbeidet: Ellefsen, H. W., D. N. Barton, P. Ardila, H. Aamlid, J. E. Betina, A. Kross, M.

Mänd, P. Horvath (2019) Mot en blågrønn eiendomsutvikling? Stresstesting av Blågrønn Faktor på utvalgte case studier i Bærum Kommune. AHO Rapport 2019:1

AHO 2019 ISBN 978-82-547-0324-3

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Fig. 1: Planleggingshierarki. Bruk av BGF i plan- og byggesak. (H Ellefsen)

Fig. 2 Beregning av BGF og normtall i Fremtidens Byer (2014) og Oslos BGF-2018. Kilde: PBE (2018)

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Fig. 5 Tolkning av metodetrinn for Oslos BGF 2018 sammenlignet med et rammeverk for økosystemtjenester (øverst).

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Fig. 6 Geografiske forskjeller i BGF håndteres ved å differensiere normen mellom indre og ytre by. Kilde: PBE 2018

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Fig. 8 Valg av case og klassifisering i forhold til planleggingsfase

Presisjonsnivå BGF Informasjonsgrunnlag Case

1.2 Regulering tidligfase 1.2 Regulert arealplan

Illustrasjonsplaner, reguleringsplaner, beskrivelser fra saksbehandler og søkere, samt andre juridiske og veiledende dokumenter. Intervjuer og observasjon.

Bekkestua Sør

Hamang og Industriveien*

2. Prosjekteringsfase Underlagsdokumenter(arealplaner) Arkitekttegninger og beskrivelser, visualiseringer, utomhusplaner. Intervjuer og observasjon.

Sandvika sentrum

3.1 Ferdigstilt prosjekt 3.2 Under bygging

Kart, satellitt/flybilder, juridisk prosjektdokumentasjon, intervjuer og observasjon.

Telenor Fornebu Fornebu Senter Storøya Fornebu

(17)

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Fig. 10 Brukergrensesnitt i BGF-QGIS et prosjekt. Flybilde med kartlagte BGF flater og kvaliteter(trekroner)

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Bekkestua Sør Størrelse planområde:

Størrelse prosjekt:

Planstatus:

Områdetype:

Nøkkelprogram og idé:

Saksbehandler:

Arkitekt/Landskapsarkitekt:

Kartlagt av:

33 087 m2

BRA 40-50 000m2 (128 – 152%)

Presisjonsnivå 1 - Plansak, reguleringsfase. Konsept.

Utbygging av grøntområde (tidligere dyrket mark) til boliger.

Bolig + barnehage, parkering under terreng, sykkelsti, rekreasjon, lek.

Linn Francis

Lund & Slaatto v. Haakon Gilje Aarseth Jayne Betina

BGF eksisterende situasjon:

Estimert BGF planforslag: BGFfør = 1.82 (Figur 11)

BGFetter = 0.46 (Figur 12

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(22)

Fig. 14 Bekkestua Sør 2018

Fig. 13 Foreløpig situasjonsplan Bekkestua Sør 2018

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Fig. 16 BGF QGIS - Bekkestua Sør: Situasjonsplan etter foreslått utbygging

Fig. 15 BGF QGIS - Bekkestua Sør før foreslått utbygging

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