Embodied GHGs in a Fast Growing City: Looking at the Evolution of a Dwelling Stock using Structural Element Breakdown and Policy Scenarios

Verena Göswein, Jonathan Krones, Giulia Celentano, John E. Fernández and Guillaume Habert

Journal of Industrial Ecology, 2018, vol. 22, issue 6, 1339-1351

Abstract: Africa is currently experiencing rapid population growth and accelerated urbanization. This demographic shift will require a large amount of new construction material resulting in substantial environmental impact. For many cities on the continent, data gaps make specific quantification and robust prediction of this impact highly difficult. This article presents a method to assess the stock dynamics and embodied emissions of a rapidly growing urban built environment using a bottom‐up, typological approach. This approach allows for the identification of appropriate engineering solutions for decarbonization by localizing embodied greenhouse gas (GHG) emissions in the different constructive elements with a revisited Sankey diagram. Different alternatives regarding housing type and construction techniques are compared. The city of Johannesburg is used as a case study to illustrate the relation between building types, technologies, and embodied GHG of its residential building stock. This new visualization uncovers the most material‐ and GHG‐intense dwelling types and building elements. The adapted Sankey represents the building stock and its drivers in a simple way, allowing clear understanding of the consequences of potential alternatives. The business‐as‐usual scenario indicates 100.5 megatons carbon dioxide equivalent (Mt CO2‐eq) for new construction between 2011 and 2040. The results of the dynamic model over time show that only a combination of a densified building stock with multistory buildings and the use of alternative construction materials and techniques show real potential to decelerate GHG emissions (33.0 Mt CO2‐eq until 2040) while aiming to provide adequate and sustainable housing for all.

Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://doi.org/10.1111/jiec.12700

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:bla:inecol:v:22:y:2018:i:6:p:1339-1351

Ordering information: This journal article can be ordered from
http://www.blackwell ... bs.asp?ref=1088-1980

Access Statistics for this article

Journal of Industrial Ecology is currently edited by Reid Lifset

More articles in Journal of Industrial Ecology from Yale University
Bibliographic data for series maintained by Wiley Content Delivery ().