3- Seismic capacity design vs direct design 

Thank you for your comment. Most recent books are using capacity design. The rationale of capacity design can be found in the following: 1.Earthquake engineering theory and implementation. 2. Paulay , T. and Priestley , M.N.J. ( 1992 ). Seismic Design of Reinforced Concrete and Masonry Buildings . John Wiley & Sons , New York, NY, USA. 3. Bozorgnia , Y. and Bertero , V.V. ( 2004 ). Earthquake Engineering. From Engineering Seismology to Performance - Based Engineering . CRC Press , Boca Raton, FL, USA