Innovation in Low Carbon Construction Technologies: An Historic Analysis for Obviating Defects

A. Forster, Scott Fernie, Kate Carter, Derek Thomson, Pete Walker

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose
This paper evaluates the risks of building defects associated with rapid advancement of 'green' construction
technologies. It identifies the methods adopted by the sector for the determination of pre-construction defects
that are framed within the context of, traditional; scientific; and professional design approaches. These are
critically evaluated and utilised in attempts to mitigate defects arising from diffusing low carbon construction
innovations.
Design method
The paper takes the form of an evaluative literature review. Polemic in orientation, the paper critically compares
two periods of time associated with rapid advancement of innovation. The first, the post World War II housing
boom is synonymous with a legacy of substandard buildings that in many cases rapidly deteriorated, requiring
refurbishment or demolition shortly after construction. The second, is today’s ‘green’ technology ‘shift’ with its
inherent uncertainty and increased risk of latent building defects and potential failure to deliver meaningful long
term performance. Central to this is an exploration of the drivers for innovation, and subsequent response,
precautionary measures initiated, and the limitations of institutionalised systems to identify and mitigate defects.
Similarities and differences between these historical periods frame a discussion around the theoretical
approaches to defects and how these may be limited in contemporary low carbon construction. A conceptual
framework is presented with the aim of enhancing the understanding for obviation of defects.
Findings
Sufficient commonality exists between the periods to initiate a heightened vigilance in the identification,
evaluation and ideally the obviation of defects. Design evaluation is not expressly or sufficiently defect focused.
It appears that limited real change in the ability to identify defects has occurred since the post war period and
our ability to predict the performance of innovative systems and materials is therefore questionable. Attempts to
appraise defects are still embedded in the three principle approaches: traditional; scientific; and professional
design. Each of these systems have positive characteristics and address defect mitigation within constrains
imposed by their very nature. However, they all fail to address the full spectrum of conditions and design and
constructional complexities that lead to defects. The positive characteristics of each system need to be
recognised and brought together in an holistic system that offers tangible advantages. Additionally, independent
design professionals insufficiently emphasise the importance of defect identification and holistic evaluation of
problems in design failure are influenced by their professional training and education. A silo based mentality
with fragmentation of professional responsibility debases the efficacy of defect identification, and failure to
work in a meaningful, collaborative cross professional manner hinders the defect eradication process.
Research limitations
Whilst forming a meaningful contribution to stimulate debate, further investigation is required to tangibly
establish integrated approaches to identify and obviate defects.
Practical Implications
The structured discussion and conclusions highlight areas of concern for industry practitioners, policy makers,
regulators, industry researchers and academic researchers alike in addressing and realising a low carbon
construction future. The lessons learned are not limited to a UK context and they have relevance internationally,
particularly where rapid and significant growth is coupled with a need for carbon reduction and sustainable
development such as the emerging economies in China, Brazil and India.
Social Implications
The carbon cost associated with addressing the consequences of emerging defects over time significantly
jeopardises attempts to meet legally binding sustainability targets. This is a relatively new dimension and
compounds the traditional economic and societal impacts of building failure. Clearly, blindly accepting this as
‘the cost of innovation without development’ cannot be countenanced.
Originality
Much research has been undertaken to evaluate post construction defects. The protocols and inherent
complexities associated with the determination of pre-construction defects have to date been largely neglected.
This work attempts to rectify this situation.

Original languageEnglish
Pages (from-to)52-72
JournalStructural Survey
Volume33
Issue number1
DOIs
Publication statusPublished - 2015

Keywords

  • Building defects
  • Low carbon construction
  • Building detailing
  • Historic analysis
  • Innovative technologies

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