I am trying to figure out whether a seismic static lateral force analysis (or equivalent static analysis or lateral force method) gives

**absolute**or

**relative**storey forces. My aim is to convert the obtained floor forces (Fi) (from the static analysis) into pseudo floor accelerations (pA), where, pA = Fi/m and m is the storey mass. The reason for doing this is so I can compare the codified static analysis results to peak floor accelerations (PFA) obtained from a nonlinear time history analysis. I know that the PFA from the nonlinear analysis are absolute values but I am confused whether the pseudo values from a codified static approach are absolute or relative. Am I comparing apples with apples? I am aware that the PFA's from the nonlinear analysis are maximum absolute values at each floor level and that the PFA's throughout the building height do not all occur simultaneously at the same time.

Any discussion around this would be most welcomed as the more I think about it the more confused I get!

Regards,

JK7070