8B. ANALYSIS PART 2

CHAPTER 8B 'ANALYSIS' 41 Selecting the command displays the results of the upper eigenmodes influence test. So if this ratio is greater than 1.3 , even at one level and in one direction, pushover can still be performed, but an elastic dynamic analysis (with seismic action calculated either from the EC8 design spectrum or from acceleration time histories) must be performed in parallel, using either method (m) or method (q). In this scenario, an increase of these rates by 25% is allowed. So of the two scenarios that will be run (pushover and dynamic) the worst-case outcomes should be taken. This increase of the coefficients is done by user through the new parameter in the method selection dialog box