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Submitted on: 07 January 2002.
Revised on: 17 March 2002.
Accepted on: 05 May 2002.
___________________Civil Engineering Journal-Tehran
Submitted on: 05 January 2025.
Revised on: 10 April 2025.
Accepted on: 26 May 2025.
___________________Civil Engineering Journal-Tehran
Submitted on: 18 December 2010.
Revised on: 13 April 2011.
Accepted on: 23 May 2011.
___________________Civil Engineering Journal-Tehran
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Submitted on: 25 April 1999.
Revised on: 12 August 1999.
Accepted on: 29 August 1999.
___________________Civil Engineering Journal-Tehran