The ninth edition of this highly respected textbook has been thoroughly revised and updated in accordance with the latest edition of the 2019 American Concrete Institute Building Code and Commentary (ACI 318-19). Major changes include new design provisions for shear, development length, beam-column joints, and deflections, among others. Numerous examples and end-of-chapter problems are provided throughout the textbook. To aid instructors, many problem solutions are also available as Mathcad® worksheets, allowing alternate solutions by modifying a few parameters at the choice of the instructor.