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Umeå, Sweden

Danielski I.,Mid Sweden University | Nair G.,Umea University | Joelsson A.,Sweco | Froling M.,Mid Sweden University
Building and Environment | Year: 2016

The design concept of conditioned atria gains increasing popularity in commercial and service buildings all over the world, but is still not a common building design in the residential sector. This study investigates the potential of such design in residential buildings in Nordic climates as means to enhance both energy efficiency as well as social interaction among residents. Energy modelling was used to compare energy efficiency among designs of residential buildings with and without atrium and to identify important design parameters. Social interaction was analysed, based on a survey evaluating the perception of residents living in an existing multi-storey apartment building designed with a heated atrium in the north of Sweden. The results show that heated atrium in Nordic climates have a potential to reduce the total final energy demand while at the same time increase the conditioned space of the building. To positively impact energy efficiency, the atrium should fulfil three requirements: (i) it should be designed to reduce the shape factor for the whole building; (ii) it should have the minimum glazed area that comply with the building requirements concerning natural light and visual comfort; and (iii) adjustable solar shading should be installed in the atrium's façades to avoid unwanted overheating. The survey results indicate that the additional space created by the atrium has a potential to facilitate and promote social interaction among residents and to increases a sense of neighbourliness and belongingness, which are often discussed as important parameters in relation to social sustainability. © 2016 Elsevier Ltd Source

Lofgren J.,Sweco
21st World Congress on Intelligent Transport Systems, ITSWC 2014: Reinventing Transportation in Our Connected World | Year: 2014

Sweden's capital Stockholm is experiencing a rapid expansion, generating a demand of new tools facilitating more effective ways of travelling. The innovation competition ITS Innovation Stockholm Kista aims to stimulate the development of new innovative solutions that make life easier for the Stockholm citizens. At present, minor disturbances in e.g. the Stockholm Metro or one of the major highways lead to significant delays and substantial costs for the national economy. The development of new smart solutions that contribute to a more efficient use of the transport infrastructure have great potential in improving the conditions for nicer and more efficient ways of travelling. The innovation competition is arranged as a Pre-Commercial Procurement (PCP), the first ever in Sweden, a procedure to procure research and development services. The competition, which was launched in autumn 2012, is arranged by the City of Stockholm, Swedish Transport Administration, Stockholm Public Transport and Kista Science City and is partly financed by Sweden's Innovation Agency. To facilitate data access for competitors, the competition organisers offer a data market where developers get free access to some forty datasets through one API. The total price money is €350 000, a pool from which the winning contributions apply for funding. Source

Johansson M.,Lund University | Rosen M.,Sweco | Kuller R.,Lund University
Lighting Research and Technology | Year: 2011

During the hours of darkness, the mobility of young women, the elderly and the disabled is limited in urban areas. In a field study possible predictors of the perceived visual accessibility and the perceived danger of an urban footpath were investigated. Eighty-one people individually walked along the footpath after dark. They subjectively assessed the environment and answered a questionnaire about personality and socio-demographics. Visual accessibility was predicted by visual field, environmental trust and brightness. Danger was predicted by the pleasantness of the lighting, gender, brightness and environmental trust. Consequently, the influence of individual characteristics, including the subjective judgments of brightness and hedonic tone and the personality dimension of trust in the physical environment, should be considered in the design of exterior lighting for urban footpaths. © 2011 The Chartered Institution of Building Services Engineers. Source

Bjertnaes M.A.,Sweco | Malo K.A.,Norwegian University of Science and Technology
WCTE 2014 - World Conference on Timber Engineering, Proceedings | Year: 2014

This paper deals with the comfort properties in a planned 14-storey timber apartment building in Bergen, Norway. The building will be one of the tallest timber buildings in the world. The building consists of load-carrying glulam trusses with two intermediate strengthened levels. The truss carries prefabricated building modules. Herein, the evaluation with respect to dynamic behaviour of the building is described with emphasis on the horizontal acceleration due to wind forces. Source

Abrahamsen R.B.,Sweco | Malo K.A.,Norwegian University of Science and Technology
WCTE 2014 - World Conference on Timber Engineering, Proceedings | Year: 2014

"Treet" is a 14-storey timber apartment building in Norway which is likely to be built during 2014. The building will be one of the tallest timber buildings in the world. The building consists of load-carrying glulam trusses and two intermediate strengthened levels. Prefabricated building modules are stacked on top of the concrete garage and the strengthened levels. CLT is used in the elevator shaft, internal walls and balconies but is not a part of the main load bearing system. Glass and metal sheeting protect the structural timber from rain and sun. A step-by-step model will be established to ensure a smooth assembly. Source

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