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Vertical Extension of Buildings as an Enabler of Energy Renovation

Nilsson, Rikard LU ; Blomsterberg, Åke LU and Landin, Anne LU (2016)
Abstract
We report on the study of six similar buildings built in an area of Gothenburg, Sweden, in 1971, which are now in urgent need of renovation. However, the owner of the buildings - a municipal housing company did not achieve a financially viable renovation of the pilot project. This meant that renovation on a similar basis for the remaining five buildings would not be possible. For this reason the housing company chose to undertake a vertical extension, by adding two floors with apartments on top of the existing buildings. This has improved the economics and made renovation of the five buildings possible. The objectives of this study are therefore, to show how a vertical extension can make a renovation of these buildings financially viable.... (More)
We report on the study of six similar buildings built in an area of Gothenburg, Sweden, in 1971, which are now in urgent need of renovation. However, the owner of the buildings - a municipal housing company did not achieve a financially viable renovation of the pilot project. This meant that renovation on a similar basis for the remaining five buildings would not be possible. For this reason the housing company chose to undertake a vertical extension, by adding two floors with apartments on top of the existing buildings. This has improved the economics and made renovation of the five buildings possible. The objectives of this study are therefore, to show how a vertical extension can make a renovation of these buildings financially viable. We argue that a vertical extension can be applied to other similar buildings from this era. If vertical extensions could make more renovations possible this would lead to a significant impact on final energy use and carbon emissions. This case study has been supported by a site visit, interviews with the housing company and the contractor, document analysis, energy simulation and global warming potential simulation. Four renovation concepts are compared in order to find the most appropriate: minimalist, code-compliant, low-energy and low-energy plus vertical extension renovation. The conclusion of this study is that vertical extensions provide enough incentive to preform extensive energy renovations, which could reduce final energy use by more than 50%. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
unpublished
subject
keywords
Energy renovation, Life cycle analysis, Densification, Vertical extension of buildings
pages
10 pages
language
English
LU publication?
yes
id
dd54b589-d3f1-44b2-ab99-3c7ef9c666ce
date added to LUP
2016-04-27 14:11:11
date last changed
2016-06-27 08:43:13
@misc{dd54b589-d3f1-44b2-ab99-3c7ef9c666ce,
  abstract     = {We report on the study of six similar buildings built in an area of Gothenburg, Sweden, in 1971, which are now in urgent need of renovation. However, the owner of the buildings - a municipal housing company did not achieve a financially viable renovation of the pilot project. This meant that renovation on a similar basis for the remaining five buildings would not be possible. For this reason the housing company chose to undertake a vertical extension, by adding two floors with apartments on top of the existing buildings. This has improved the economics and made renovation of the five buildings possible. The objectives of this study are therefore, to show how a vertical extension can make a renovation of these buildings financially viable. We argue that a vertical extension can be applied to other similar buildings from this era. If vertical extensions could make more renovations possible this would lead to a significant impact on final energy use and carbon emissions. This case study has been supported by a site visit, interviews with the housing company and the contractor, document analysis, energy simulation and global warming potential simulation. Four renovation concepts are compared in order to find the most appropriate: minimalist, code-compliant, low-energy and low-energy plus vertical extension renovation. The conclusion of this study is that vertical extensions provide enough incentive to preform extensive energy renovations, which could reduce final energy use by more than 50%.},
  author       = {Nilsson, Rikard and Blomsterberg, Åke and Landin, Anne},
  keyword      = {Energy renovation,Life cycle analysis,Densification,Vertical extension of buildings},
  language     = {eng},
  month        = {06},
  pages        = {10},
  title        = {Vertical Extension of Buildings as an Enabler of Energy Renovation},
  year         = {2016},
}