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The purpose of progressive collapse analysis is to examine that by eliminating different columns whether a structure remains stable following the guidelines of General Services Administration of US.For this analysis, we have considered a G+10 storied RC frame building consisting of 4X4 bay of 84 ft. in X-axis (Long direction) and 52 ft. in Y-axis (Short direction) designed by the Bangladesh National Building Code (BNBC) 2020.For structural analysis, a numerical model is developed by using finite element-based software and progressive collapse analysis is performed according to GSA guidelines.We are considering three types of column sections (rectangular, circular, rectangular column with shear wall) and these three types of columns have similar cross-sectional area.For each type of building, we have considered removing three columns (corner column, exterior column & interior column).For buildings with shear wall along with rectangular column, the DCR values are well within the safe merging recommended by GSA guideline among all the considered three cases.On the other hand, the beams of the buildings with rectangular and circular column sections are not safe for progressive collapse although the columns of these buildings are safe.
Zahura et al. (Mon,) studied this question.