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Westerberg, Ulla
Publications (10 of 11) Show all publications
Wallhagen, M., Glaumann, M., Eriksson, O. & Westerberg, U. (2013). Framework for Detailed Comparison of Building Environmental Assessment Tools. Buildings, 3(1), 39-60
Open this publication in new window or tab >>Framework for Detailed Comparison of Building Environmental Assessment Tools
2013 (English)In: Buildings, ISSN 2075-5309, E-ISSN 2075-5309, Vol. 3, no 1, p. 39-60Article in journal (Refereed) Published
Abstract [en]

Understanding how Building Environmental Assessments Tools (BEATs) measure and define “environmental” building is of great interest to many stakeholders, but it is difficult to understand how BEATs relate to each other, as well as to make detailed and systematic tool comparisons. A framework for comparing BEATs is presented in the following which facilitates an understanding and comparison of similarities and differences in terms of structure, content, aggregation, and scope. The framework was tested by comparing three distinctly different assessment tools; LEED-NC v3, Code for Sustainable Homes (CSH), and EcoEffect. Illustrations of the hierarchical structure of the tools gave a clear overview of their structural differences. When using the framework, the analysis showed that all three tools treat issues related to the main assessment categories: Energy and Pollution, Indoor Environment, and Materials and Waste. However, the environmental issues addressed, and the parameters defining the object of study, differ and, subsequently, so do rating, results, categories, issues, input data, aggregation methodology, and weighting. This means that BEATs measure “environmental” building differently and push “environmental” design in different directions. Therefore, tool comparisons are important, and the framework can be used to make these comparisons in a more detailed and systematic way.

Place, publisher, year, edition, pages
Basel, Switzerland: MDPI AG, 2013
Keywords
framework; green building design; sustainable building; environmental assessment tool; LEED; code for sustainable homes; ecoeffect, miljöbedömningsmetoder; miljöanpassat byggande; ramverk
National Category
Environmental Analysis and Construction Information Technology Architectural Engineering
Identifiers
urn:nbn:se:hig:diva-13885 (URN)10.3390/buildings3010039 (DOI)2-s2.0-84992234689 (Scopus ID)
Available from: 2013-02-26 Created: 2013-02-26 Last updated: 2018-03-13Bibliographically approved
Wallhagen, M., Glaumann, M. & Westerberg, U. (2008). Les outils de mesure de la durabilité des bâtiments: comparaison transnationale. Annales de la Recherche Urbaine (105), 94-103
Open this publication in new window or tab >>Les outils de mesure de la durabilité des bâtiments: comparaison transnationale
2008 (French)In: Annales de la Recherche Urbaine, ISSN 0180-930X, no 105, p. 94-103Article in journal (Refereed) Published
Abstract [fr]

Les outils d'évaluation environnementale des bâtiments se développent rapidement dans de nombreux pays. Tous prétendent mesurer la qualité environnementale ou la durabilité des bâtiments, et donnent un maximum de points à ce qui est durable d'une manière ou d'une autre. Mais pour l'instant il n'y a pas de consensus sur le sens des mots « vert » ou « durables » en termes de critères et d'indicateurs. Que cherchent à mesurer les indicateurs existant? Trois outils d'évaluation ont été retenus, l'américain LEED-NC, le britannique Code for Sustainable Homes (CSH) et le suédois EcoEffect. Ils ont trois champs d'évaluation principale en commun : l'énergie, l'environnement intérieur, les matériaux et les déchets. En revanche les contenus sont différents. Ces outils ont été comparés quant à leur but, leur contenu, et leur manière d'agréger les items. Ils ont été testés sur un immeuble neuf de plusieurs étages. Les résultats de leur application à cet immeuble divergent, ce qui pose la question de la définition d'outils d'évaluation réellement pertinents.

Place, publisher, year, edition, pages
Paris: Ministère de l'Écologie, de l'Énergie, du Développement durable et de l'aménagement du territoire, 2008
Keywords
Sustainability, City, Sustainable development, Quality, Environment, Building, Crossnational Comparisons, évaluation environnementale des bâtiments
National Category
Building Technologies
Identifiers
urn:nbn:se:hig:diva-3746 (URN)
Note

Engelsk titel: Tools for assessing building sustainability : Transnational comparison

Available from: 2009-02-13 Created: 2009-02-13 Last updated: 2018-06-11Bibliographically approved
Wallhagen, M., Glaumann, M. & Westerberg, U. (2008). What is a "green" building according to different assessment tools?. In: Proceedings of the 2008 World Sustainable Building Conference. Vol. 2. Paper presented at Sustainable Building 2008, Melbourne, Australia, 21-25 September 2008 (pp. 2618-2625).
Open this publication in new window or tab >>What is a "green" building according to different assessment tools?
2008 (English)In: Proceedings of the 2008 World Sustainable Building Conference. Vol. 2, 2008, p. 2618-2625Conference paper, Published paper (Refereed)
Abstract [en]

Environmental assessment tools for buildings are rapidly developing in many countries. All of them claim that they measure “greenness” or “sustainability” of buildings, i.e. if maximum scores are awarded a building is sustainable in some respect. But so far there is no consensus on the interpretation of “green” or “sustainable” in terms of criteria and indicators.

This article explores if different tools point in different directions regarding “green” building design. It also investigates characteristics of assessment tools and consequences of different approaches.

Three distinctly different assessment tools, LEED-NC, Code for Sustainable Homes (CSH) and EcoEffect have been selected. They have three core assessment areas in common, namely Energy, Indoor Environment and Materials & Waste. The content however is different.

The tools have been compared with respect to aim, content and aggregation. They have been tested on a new multi storey residential building. Assessments within the core areas were compared. Measures to improve the overall judgement were explored. The diverging result raises the question how to design environmentally relevant and practically useful assessment tools for buildings.

Keywords
green building, sustainable building, environmental assessment, environmental indicator, weighting, building design, assessment tool, environmental management
National Category
Civil Engineering Building Technologies
Identifiers
urn:nbn:se:hig:diva-3747 (URN)978-0-646-50372-1 (ISBN)
Conference
Sustainable Building 2008, Melbourne, Australia, 21-25 September 2008
Funder
Formas
Available from: 2009-02-13 Created: 2009-02-13 Last updated: 2018-03-13
Eliasson, I., Knez, I., Westerberg, U., Thorsson, S. & Lindberg, F. (2007). Climate and behaviour in a Nordic city. Landscape and Urban Planning, 82(1-2), 72-84
Open this publication in new window or tab >>Climate and behaviour in a Nordic city
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2007 (English)In: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 82, no 1-2, p. 72-84Article in journal (Refereed) Published
Abstract [en]

Four urban public spaces, representing various designs and microclimates, were investigated in Gothenburg, Sweden, in order to estimate how weather and microclimate affect people in urban outdoor environments. The research strategy was both multidisciplinary and interdisciplinary and included scientists from three disciplines: architecture, climatology and psychology. The project is based on common case studies carried out during four seasons, including measurements of meteorological variables, interviews and observations of human activity at each place. Multiple regression analysis of meteorological and behavioural data showed that air temperature, wind speed and clearness index (cloud cover) have a significant influence on people's assessments of the weather, place perceptions and place-related attendance. The results support the arguments in favour of employing climate sensitive planning in future urban design and planning projects, as the physical component of a place can be designed to influence the site-specific microclimate and consequently people's place-related attendance, perceptions and emotions.

Keywords
limate planning; Environmental design; Environmental psychology; Public spaces; Urban climate
National Category
Applied Psychology Physical Geography
Identifiers
urn:nbn:se:hig:diva-2899 (URN)10.1016/j.landurbplan.2007.01.020 (DOI)000248929000008 ()2-s2.0-34447311380 (Scopus ID)
Available from: 2008-05-28 Created: 2008-05-28 Last updated: 2018-03-13Bibliographically approved
Westerberg, U. & Sandberg, M. (2006). A typology for urban form with respect to wind climate. In: International conference for Nordic Network for Urban Morphology, Stockholm 2006 Book of Abstracts. Paper presented at Conference on Nordic and international urban morphology, Stockholm, Sweden, 3-6 September 2006.
Open this publication in new window or tab >>A typology for urban form with respect to wind climate
2006 (English)In: International conference for Nordic Network for Urban Morphology, Stockholm 2006 Book of Abstracts, 2006Conference paper, Published paper (Other academic)
Identifiers
urn:nbn:se:hig:diva-897 (URN)
Conference
Conference on Nordic and international urban morphology, Stockholm, Sweden, 3-6 September 2006
Available from: 2007-12-10 Created: 2007-12-10 Last updated: 2018-03-13Bibliographically approved
Sandberg, M., Linden, E., Westerberg, U., Claesson, L. & Elvsén, P.-Å. (2006). Air flow pattern and pressure distribution within a street network in an urban area with a high building area density. In: The 6th International Conference on Urban Climate: Preprints. Paper presented at 6th International Conference on Urban Climate (ICUC6), Göteborg, Sweden, June 12-16, 2006 (pp. 188-191).
Open this publication in new window or tab >>Air flow pattern and pressure distribution within a street network in an urban area with a high building area density
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2006 (English)In: The 6th International Conference on Urban Climate: Preprints, 2006, p. 188-191Conference paper, Published paper (Other academic)
Abstract [en]

We report on the effect of the overall shape of a city on the flow within the street network. We start with a solid round block, aspect ratio, diameter/ height = 6. The block is subdivided into smaller blocks and step by step an increasing number of streets are introduced. In the wind tunnel visualization with helium filled soap bubbled was carried out for obtaining qualitative information about the flow pattern. The pressure distribution on the ground within the street network was recorded in 400 points. CFD predictions provided the overall flow balance; flow entering through the street portals, leaving through the exit street portals and the updraft.

Keywords
Street network, Flow Network, Morphology, District scale
Identifiers
urn:nbn:se:hig:diva-2272 (URN)91-631-9000-1 (ISBN)
Conference
6th International Conference on Urban Climate (ICUC6), Göteborg, Sweden, June 12-16, 2006
Available from: 2007-02-26 Created: 2007-02-26 Last updated: 2018-03-13Bibliographically approved
Westerberg, U., Linden, E. & Nilsson, H. (2006). Perceived windiness in urban spaces.. In: The 6th International Conference on Urban Climate - Preprints. Paper presented at 6th International Conference on Urban Climate, Göteborg, Sweden, June 12-16 2006 (pp. 209-212).
Open this publication in new window or tab >>Perceived windiness in urban spaces.
2006 (English)In: The 6th International Conference on Urban Climate - Preprints, 2006, p. 209-212Conference paper, Published paper (Other academic)
Abstract [en]

The paper discusses the perception of windiness in the urban environment and especially its visual aspects. Various urban spaces in two cities, both with a reputation of being windy, have been chosen for field studies. Perceived windiness of the spaces has been investigated through questionnaire surveys and on-site interviews simultaneous to climate measurements. Result: Windy has a negative connotation that interacts with other environmental aspects such as beauty and comfort. Also naturalness and mental images of what constitutes sheltered and windy places seem to influence the survey as well as the on-site assessments of windiness.

Keywords
wind perception, wind comfort, urban spaces
National Category
Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:hig:diva-2271 (URN)91-631-9000-1 (ISBN)
Conference
6th International Conference on Urban Climate, Göteborg, Sweden, June 12-16 2006
Available from: 2008-05-20 Created: 2008-05-20 Last updated: 2018-03-13Bibliographically approved
Linden, E., Sandberg, M. & Westerberg, U. (2006). Wind field in an urban space explored by different methods. In: The 6th International Conference on Urban Climate (ICUC6). Paper presented at the 6th International Conference on Urban Climate, Göteborg, Sweden, June 12-16 2006.
Open this publication in new window or tab >>Wind field in an urban space explored by different methods
2006 (English)In: The 6th International Conference on Urban Climate (ICUC6), 2006Conference paper, Published paper (Other academic)
Identifiers
urn:nbn:se:hig:diva-2486 (URN)
Conference
the 6th International Conference on Urban Climate, Göteborg, Sweden, June 12-16 2006
Available from: 2007-06-01 Created: 2007-06-01 Last updated: 2018-03-13Bibliographically approved
Skote, M., Sandberg, M., Westerberg, U., Claesson, L. & Johansson, A. (2005). Numerical and experimental studies of wind environment in an urban morphology. Atmospheric Environment, 39(33), 6147-6158
Open this publication in new window or tab >>Numerical and experimental studies of wind environment in an urban morphology
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2005 (English)In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 39, no 33, p. 6147-6158Article in journal (Refereed) Published
Abstract [en]

The purpose of the paper is to examine the relation between urban morphology (three-dimensional structure) and windiness. We regard a city as a porous obstacle, which is open at the top. We consider the interaction between the atmospheric boundary layer and a city to be both a function of the overall shape (silhouette or skyline) and the internal resistance to the flow caused by the friction when the wind flows over the urban surfaces. We regard the street pattern as an interconnected flow network with the crossings as nodes. Flow, along the streets is generated by pressure differences.

We here use a highly idealized city model consisting of a circular block divided into two or four equally large sectors. Two types of cases are studied, the first with only one street through the city model with different angles between the street and the oncoming wind. The second case also contains a perpendicularly crossing street (through the center). Both wind tunnel experiments and numerical flow computations (computational fluid dynamics, CFD) are used and compared. The general agreement between the two is good and the CFD method offers new possibilities for quantifying the urban wind environment. (c) 2005 Elsevier Ltd. All rights reserved.

Keywords
city model, street canyon, boundary layer, wind tunnel, computer simulation
National Category
Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:hig:diva-883 (URN)10.1016/j.atmosenv.2005.06.052 (DOI)000232762600013 ()2-s2.0-25844492158 (Scopus ID)
Available from: 2007-12-10 Created: 2007-12-10 Last updated: 2018-03-13Bibliographically approved
Lindberg, F., Sandberg, M., Westerberg, U. & Claesson, L. (2004). Windiness in an Urban Space described with different methods. In: Cost Action C14-Impact of wind and Storm on City Life and Built Environment. Paper presented at COST Action C14 , May 5-7 2004.
Open this publication in new window or tab >>Windiness in an Urban Space described with different methods
2004 (English)In: Cost Action C14-Impact of wind and Storm on City Life and Built Environment, 2004Conference paper, Published paper (Other academic)
Identifiers
urn:nbn:se:hig:diva-878 (URN)
Conference
COST Action C14 , May 5-7 2004
Available from: 2007-12-10 Created: 2007-12-10 Last updated: 2018-03-13Bibliographically approved
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