1. Dept. of Civil Engineering, Faculty of Engineering, Ain Shams Univ., El-Sarayat St., Abbasseya 1, Cairo 11517, Egypt (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering, Faculty of Engineering, Ain Shams Univ., El-Sarayat St., Abbasseya 1, Cairo 11517, Egypt.
3. Professor, Dept. of Civil Engineering, Faculty of Engineering, Ain Shams Univ., El-Sarayat St., Abbasseya 1, Cairo 11517, Egypt.
4. Professor, Dept. of Concrete, Housing and Building National Research Center, 87 Tahrir St., Dokki, Giza 12611, Egypt.