dc.contributor.author | Hamouz, Vladimir | |
dc.contributor.author | Lohne, Jardar | |
dc.contributor.author | Wood, Jaran R. | |
dc.contributor.author | Muthanna, Tone Merete | |
dc.date.accessioned | 2018-05-16T06:50:42Z | |
dc.date.available | 2018-05-16T06:50:42Z | |
dc.date.created | 2018-03-16T11:09:40Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 2073-4441 | |
dc.identifier.uri | http://hdl.handle.net/11250/2498246 | |
dc.description.abstract | Rooftops represent a considerable part of the impervious fractions of urban environments. Detaining and retaining runoff from vegetated rooftops can be a significant contribution to reducing the effects of urbanization, with respect to increased runoff peaks and volumes from precipitation events. However, in climates with limited evapotranspiration, a non-vegetated system is a convenient option for stormwater management. A LECA (lightweight expanded clay aggregate)-based roof system was established in the coastal area of Trondheim, Norway in 2016. The roof structure consists of a 200 mm-thick layer of LECA® lightweight aggregate, covered by a concrete pavement. The retention in the LECA-based roof was estimated at 9%, which would be equivalent to 0.27 mm/day for the entire period. The LECA-based configuration provided a detention performance for a peak runoff reduction of 95% (median) and for a peak delay of 1 h and 15 min (median), respectively. The relatively high moisture levels in the LECA-based roof did not affect the detention performance. Rooftop retrofitting as a form of source control may contribute to a change in runoff characteristics from conventional roofs. This study of the LECA-based roof configuration presents data and performance indicators for stormwater urban planners with regard to water detention capability. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | MDPI | nb_NO |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Hydrological Performance of LECA-Based Roofs in Cold Climates | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.volume | 10 | nb_NO |
dc.source.journal | Water | nb_NO |
dc.source.issue | 3 | nb_NO |
dc.identifier.doi | 10.3390/w10030263 | |
dc.identifier.cristin | 1573436 | |
dc.relation.project | Norges forskningsråd: 237859 | nb_NO |
dc.description.localcode | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | nb_NO |
cristin.unitcode | 194,64,91,0 | |
cristin.unitname | Institutt for bygg- og miljøteknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |