“Effect of Separation Distance between the Columns on Punching Pattern for Flat Plates with High Strength Concrete”, J. eng. sustain. dev., vol. 14, no. 3, pp. 162–177, Sep. 2010, Accessed: Oct. 06, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1472