Understanding the concepts on Degrees of Freedom
1.ans) mode1
mode2
mode3
mode4
mode5
1b)
- Finally, obtain the base shear for each of the 5 modes of vibration and the combined base shear as per SRSS rule. The pseudo acceleration design spectrum to obtain the base shear for each mode is provided below.
1c)
- How many modes are to be considered such that a modal mass participating ratio of 90% is obtained?
