Which of the following statements is/are correct related to earthquake-resistant structures?
1. The factor by which the base shear induced in a structure, if it were to remain elastic, is reduced to obtain the design base shear is known as the seismic zone factor.
2. The storey lateral strength is the total strength of all seismic force resisting elements sharing the lateral storey shear in the considered direction.
3. Dynamic analysis of design earthquake forces can be performed by Response Spectrum method or Modal Time History or By Time History method.
1
Statements 2 and 3 are correct, and statement 1 is incorrect.
2
Statement 1 is correct, and statements 2 and 3 are incorrect.
3
Statements 1 and 2 are correct, and statement 3 is incorrect.
4
All statements are correct.