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Enabling energy-efficient renovation : the case of vertical extension to buildings

Sundling, Rikard LU ; Blomsterberg, Åke LU and Landin, Anne LU (2018) In Construction Innovation
Abstract

Purpose: This paper is based on a study of six similar buildings built in Gothenburg, Sweden, in 1971, which were in urgent need of renovation. A life cycle profit analysis shows how four competing concepts were evaluated to find a financially viable renovation concept; additionally, the environmental impacts of these renovation concepts using a life cycle assessment are presented. Design/methodology/approach: Four renovation concepts are compared to find the most appropriate concept, namely, minimalist, code-compliant, low-energy and low-energy plus vertical extension concepts. The methods used for comparison are life cycle profit analysis and life cycle impact assessment; the methods used for data gathering included site visits,... (More)

Purpose: This paper is based on a study of six similar buildings built in Gothenburg, Sweden, in 1971, which were in urgent need of renovation. A life cycle profit analysis shows how four competing concepts were evaluated to find a financially viable renovation concept; additionally, the environmental impacts of these renovation concepts using a life cycle assessment are presented. Design/methodology/approach: Four renovation concepts are compared to find the most appropriate concept, namely, minimalist, code-compliant, low-energy and low-energy plus vertical extension concepts. The methods used for comparison are life cycle profit analysis and life cycle impact assessment; the methods used for data gathering included site visits, interviews, document study, co-benefits study and energy simulation. Findings: The findings show that vertical extension supported the energy-efficient renovation of the buildings and that the combination of low-energy and the vertical extension had the highest return on investment and the lowest environmental impact. The selected concept for renovating the remaining five buildings combined was the low-energy plus vertical extension. Additional benefits from vertical extension include more apartments in central locations for the housing company, a wider variety of apartment layouts and a wider range of tenants. Drawbacks include increased use of infrastructure, green space and common appliances, as well as gentrification. Originality/value: This study shows how a vertical extension can financially enable an energy-efficient renovation and further lower its environmental impact. Benefits and drawbacks of densification are also highlighted to better understand the implementation of vertically extending a building.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Densification, Energy, Energy-efficient renovation, Lifecycle impact assessment, Lifecycle profit analysis, Vertical extension of buildings
in
Construction Innovation
publisher
Emerald Group Publishing Limited
external identifiers
  • scopus:85056481788
ISSN
1471-4175
DOI
10.1108/CI-04-2018-0034
language
English
LU publication?
yes
id
8838a138-82d8-456d-b55b-f4b09b0a9b94
date added to LUP
2018-11-28 10:38:45
date last changed
2019-02-20 11:38:00
@article{8838a138-82d8-456d-b55b-f4b09b0a9b94,
  abstract     = {<p>Purpose: This paper is based on a study of six similar buildings built in Gothenburg, Sweden, in 1971, which were in urgent need of renovation. A life cycle profit analysis shows how four competing concepts were evaluated to find a financially viable renovation concept; additionally, the environmental impacts of these renovation concepts using a life cycle assessment are presented. Design/methodology/approach: Four renovation concepts are compared to find the most appropriate concept, namely, minimalist, code-compliant, low-energy and low-energy plus vertical extension concepts. The methods used for comparison are life cycle profit analysis and life cycle impact assessment; the methods used for data gathering included site visits, interviews, document study, co-benefits study and energy simulation. Findings: The findings show that vertical extension supported the energy-efficient renovation of the buildings and that the combination of low-energy and the vertical extension had the highest return on investment and the lowest environmental impact. The selected concept for renovating the remaining five buildings combined was the low-energy plus vertical extension. Additional benefits from vertical extension include more apartments in central locations for the housing company, a wider variety of apartment layouts and a wider range of tenants. Drawbacks include increased use of infrastructure, green space and common appliances, as well as gentrification. Originality/value: This study shows how a vertical extension can financially enable an energy-efficient renovation and further lower its environmental impact. Benefits and drawbacks of densification are also highlighted to better understand the implementation of vertically extending a building.</p>},
  author       = {Sundling, Rikard and Blomsterberg, Åke and Landin, Anne},
  issn         = {1471-4175},
  keyword      = {Densification,Energy,Energy-efficient renovation,Lifecycle impact assessment,Lifecycle profit analysis,Vertical extension of buildings},
  language     = {eng},
  month        = {09},
  publisher    = {Emerald Group Publishing Limited},
  series       = {Construction Innovation},
  title        = {Enabling energy-efficient renovation : the case of vertical extension to buildings},
  url          = {http://dx.doi.org/10.1108/CI-04-2018-0034},
  year         = {2018},
}