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Submitted on: 17 July 2018.
Revised on: 25 August 2018.
Accepted on: 27 September 2018.
___________________Australian Journal of Structural Engineering
Submitted on: 10 March 2003.
Revised on: 07 June 2003.
Accepted on: 29 July 2003.
___________________Australian Journal of Structural Engineering
Submitted on: 26 November 2017.
Revised on: 13 February 2018.
Accepted on: 02 March 2018.
___________________Australian Journal of Structural Engineering