Submitted on: 06 December 2014.
Revised on: 23 January 2015.
Accepted on: 18 February 2015.
___________________Electronic Journal of Structural Engineering
Submitted on: 23 May 2020.
Revised on: 10 August 2020.
Accepted on: 25 August 2020.
___________________Electronic Journal of Structural Engineering
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Submitted on: 05 June 2006.
Revised on: 15 September 2006.
Accepted on: 10 November 2006.
___________________Electronic Journal of Structural Engineering
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