Publication type: Conference paper
Type of review: Not specified
Title: From Pilot to Mainstream : Green roofs in Basel, Switzerland
Authors : Brenneisen, Stephan
Conference details: Green roofs for Healthy Cities, 2010
Issue Date: 2010
Language : English
Subjects : Stadtökologie; Stadtplanung; Dachbegrünung
Subject (DDC) : 577: Ecology
711: Area planning
Abstract: In many cities of Switzerland green roofs became more popular as a part of ecological construction in the 1970s, and some more – in form of pilot projects - were created in the 1980s. 1995 was the EU year of Nature Conservation, and this provided the impetus for Basel’s first campaign and subsidisation (0,8 Mio US$) of green roofs, which started in 1996. A second campaign commenced in 2005 (subsidisation (1,2 Mio US$). Between these two campaigns, Basel passed a Building and Construction Law requiring green roofs on all new developments with flat roofs. After the first green roofs campaign, which ended in 1998, an analysis was undertaken of the area of flat roofs in Basel, and of the percentage of these that had green roofs. The total flat roof area in Basel was 2.4km2, and the total city area is 23 km2, so some 10% of the city had flat roofs. Of these flat roofs, about 0.29 km2 (290,000 m2) had green roofs. During the campaign architects, planners and the contractors installing the green roofs could get good practice and experience in this new technology – an important step to bring the measure into practice later. The Building and Construction Law has since provided a major impetus for more green roofs in Basel. Furthermore, the second green roofs campaign has already led to the retrofit of an additional 10,000m2 of green roofs onto existing buildings. As a result, an investigation of the total number of green roofs resulted in 1711 extensive green roof projects and 218 intensive green roofs (roof gardens) in the city of Basel. So, approximately 23% of Basel’s flat roof area is green roof in 2006. The general public in Basel still finds green roofs ‘special and exciting’, but for developers, installing green roofs is now considered routine, and developers make no objections to installing them.
URI: https://digitalcollection.zhaw.ch/handle/11475/11328
Fulltext version : Published version
License (according to publishing contract) : Licence according to publishing contract
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Appears in Collections:Publikationen Life Sciences und Facility Management

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