(1) Civil engineering, College of engineering, Thi_Qar university,Thi_Qar, Iraq , Iraq

(2) Civil engineering, College of engineering, Thi_Qar university,Thi_Qar, Iraq , Iraq

(1) Civil Engineering Department,College of Engineering, University of Thi-Qar,Thi-Qar, Iraq , Iraq

(2) Civil Engineering Department,College of Engineering, University of Thi-Qar,Thi-Qar, Iraq , Iraq