No abstract

In particular relation to the UN 2030 Agenda for sustainable development goal No. 12 (“responsible production and consumption”), the implementation of a circular economy into the building industry has special potentials. More circular flows of material and information can simultaneously decrease resource extraction, fossil energy consumption and environmental pollution, while allowing new business models. However, this chance still remains largely neglected by decision makers. In order to transform this situation, it is necessary to understand and re-weave the entire value chain – requiring new collaborations between various stakeholder groups. In a three-year project that was dedicated to setting up a strategy for the implementation of circularity in the building sector within a region in Germany, stakeholders were involved to work towards circular value creation beyond waste management. The project proceeded in three dimensions: 1) Action-oriented networking and strategy making, 2) Conceptualizations and implementation steps for a pilot location that makes high-value products from building waste, 3) Identification of action items and project initiations. Based on a stakeholder analysis, this paper reflects upon the entire process, with a focus on qualitative information flows. The paper concludes with a critical view regarding the stakeholder network method of the project and its efficiency in implementing the circular economy on a regional scale.

IzVLEČEK Z večanjem potreb po energiji postajajo vse pomembnejši okoljski učinki, povezani z grajenim okoljem, zato podnebne cilje lahko uresničujemo le, če upoštevamo oboje. V zadnjem desetletju so začeli veljati predpisi in standardi, ki spodbujajo zmanjšanje porabe primarnih virov. Arhitekti in prostorski načrtovalci so se te tematike lotili z različnimi strategijami, s ponovno uporabo gradbenih elementov, razvojem novih izdelkov ali uporabo povezav, ki bodo v prihodnosti omogočale enostavno demontažo. V zadnjem desetletju so instrumenti za merjenje ekoloških vplivov napredovali-od podatkov v razpredelnicah o oceni življenjskega cikla (life cycle assessment-LCA) do orodij, ki povezujejo ekološke podatke z gradbenimi volumni in rešitvami, ki temeljijo na samooptimizaciji. Veliko je ugibanj glede ravnanja z gradbenim materialom po uporabi, saj se bodo okvirni pogoji v prihodnosti še razvijali. V primerjavi z rušitvijo se razgradnja danes le redko uporablja, tudi raziskave o tem so omejene. Vrsta gradbenega objekta in izbira materiala vplivata na okoljske kvalitete z energijo in emisijami, povezanimi s proizvodnjo in scenarijem ravnanja ob koncu življenjskega ciklusa. Ob upoštevanju tega negotovega ozadja potrebujemo metodo, ki bi prikazovala vplive na okolje z oceno primernosti za nadaljnjo uporabo, kot sta ponovna uporaba in recikliranje. Članek obravnava tri pristope k prikazovanju parametrov, ki so na voljo v fazi načrtovanja, v zvezi z možnostmi ravnanja z materialom po uporabi, glede na praktičnost in zanesljivost. Najučinkovitejšo metodo smo vključili v programsko opremo za arhitekturno načrtovanje in ocenili. KLJUČNE BESEDE razgradnja, zasnova demontaže, ocena življenjskega cikla (LCA), sekundarni viri, vrsta povezave

Currently the building sector is under high pressure: the lack of affordable housing in conurbations and the need to implement environmental performance strategies require concepts that incorporate user needs with planetary boundaries. Against the background of global population growth and a rising demand for resources, urban densification is regarded as a major global trend. The pressure on cities is already recognizable today and studies predict a growing tendency for the next three decades. This is a sensitive situation which provides not only the chance but also the urgent necessity to implement strategies to reduce climate change effects. Regulations are necessary to guide this process in the building sector. Timber construction as well as reused and recycled material show potential to be part of the solution. Against this background, the research deals with the status-quo of current legal instruments to design and construct sustainable buildings. This article provides an overview of the legal instruments in relation to sustainable building processes in the German construction industry with a focus on timber buildings. The relevant standards and guidelines for sustainable building design are investigated by literature review. This includes German Model Building Code (MBO), parts of the DIN standards, the German Building Code (BauGB) and the Building Usage Ordinance (BauNVO) as well as the Model Timber Construction Directive (M-HFHHolzR). The regulations are applied on a multi-residential building in Cologne and discussed whether regulations are enabler or obstacle for this specific project. The results of the study show the urgent need for more flexibility within current inner-city projects to pursue an environmentally friendly design and construction.

revijo je sofinancirala Javna agencija za raziskovalno dejavnost rS. the journal is financially supported by the Slovenian research Agency 182 IGRA USTVARJALNOSTI-teorija in praksa urejanja prostora | THE CREATIVITY GAME-Theory and Practice of Spatial Planning Št. 6 / 2018 182 Znanstvena revija, št. 6 / leto 2018 Univerza v ljubljani Fakulteta za arhitekturo in Fakulteta za gradbeništvo in geodezijo ljubljana, 2018 naslov revije: igra ustVarjalnosti teorija in praksa urejanja prostora Urednici: Alenka Fikfak, Alma Zavodnik lamovšek oblikovanje in naslovnica: Gašper Mrak lektoriranje: Mojca vilfan prevod: Mojca vilfan Klasifikacija: (UDK) renata Stella Čop, (Doi) teja Koler povh Založila: Univerza v ljubljani, Fakulteta za arhitekturo in Fakulteta za gradbeništvo in geodezijo Spletna stran revije: https://www.iu-cg.org/ Spletna stran številke https://www.iu-cg.org/stevilka.php?vol=6&lang=si iSSn 2350-3637 Scientific journal, no 6 / year 2018 University of ljubljana Faculty of Architecture and Faculty of civil and Geodetic engineering ljubljana, 2018