CRACK PATTERN AND MODES FAILURE INVESTIGATION OF REINFORCED CONCRETE INVERTED HOLLOW CORE DAPPED END BEAMS STRENGTHENED WITH LONGITUDINAL NORMAL STRAND BARS (BOLTS). J. eng. sustain. dev. 2017;21(1):205-222. Accessed May 6, 2024. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/564