Submitted on: 14 August 2000.
Revised on: 14 September 2000.
Accepted on: 05 October 2000.
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
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Submitted on: 19 December 2017.
Revised on: 30 December 2017.
Accepted on: 05 January 2018.
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
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Submitted on: 06 April 2016.
Revised on: 10 May 2016.
Accepted on: 03 June 2016.
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
Submitted on: 01 January 2007.
Revised on: 18 January 2007.
Accepted on: 04 February 2007.
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
Submitted on: 17 December 2020.
Revised on: 24 January 2021.
Accepted on: 30 January 2021.
Proceedings of the Institution of Civil Engineers-Engineering Sustainability
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