Lecture 8-Check for Story Drift, Modal Mass Participating Ratios, Torsional Irregularity per IS Code

In this lecture, we deal with post analysis codal checks in ETABS for our steel structure. We learn how to check for storey drift, modal participating mass ratios and torsional irregularity as per IS 1893 (Part 1) Code. In this video, we make some corrections in load pattern definitions for EQX and EQY load patterns. All the viewers who have followed our videos regularly are also requested to do the same.

[@s3soch]

my modal participation ratio shows 38% in x direction and 34% in y-direction as 1st modal case and 48% and 38% as second modal case in x and y direction respectively and in third modal case it has 69% in z direction is there something wrong with my model or is it can be termed as normal......

[@katilnikki7104]

Just play with your geometry