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231 of 234 <br />L3-L4 COLUMN SHEAR DCR - MODIFIER STUDY (NORTH/SOUTH EXAMPLE) <br />Max DCR with uniform M.0.1. Max DCR with adjusted <br />Column Ground Motion modifiers M.0.1. modifiers <br />72yr NR d 1.203 --It 0.854 <br />72yr NR d 1.133 It 0.810 <br />C7* <br />C9* <br />Clo 72yr NR d 0.957 0.997 <br />Cll 72yr NR d 0.931 0.965 <br />r,c noel n OOC <br />LJJ /Ly' lin U V.... <br />Clol 72yr NR d 0.909 0.941 <br />Cll2 72yr NR d 0.902 0.934 <br />Cll3 72yr NR d 0.874 0.905 <br />Not-t <br />C114 72yr NR d 0.814 0.843 <br />Cll5 72yr NR d 0.751 0.776 <br />C125*72yr NR d 1.221 0.867 <br />C126*72yr NR d 1.066 0.759 <br />C127 72yr NR d 0.936 0.975 <br />C128 72yr NR d 0.941 0.975 <br />C167 72yr NR d 0.955 0.990 <br />C168 72yr NR d 0.897 0.929 <br />C169 72yr NR d 0.874 0.906 <br />C170 72yr NR d 0.901 0.934 <br />C171 72yr NR d 0.787 0.815 <br />C172 72yr NR d 0.721 0.745 <br />NOTES: <br />*ADJUSTED MOMENT OF INERTIA MODIFIERS: TENSION-SIDE COLUMNS; 122 AND 133 MODIFIERS REDUCED FROM TYPICAL 0.3 <br />TO 0.2 TO REFLECT REDUCED TENSION-EDGE STIFFNESS. WHILE IT IS AN APPROXIMATION, ONE SEES A PRECIPITOUS DROP <br />ON THE TENSION-SIDE COLUMN SHEAR DEMANDS DUE TO EXPECTED SOFTENING. <br />THE MAX DCRS ABOVE ARE EXPORTED AT THE NORTHRIDGE GROUND MOTION'S PULSE AROUND 4 SECONDS INTO THE <br />RECORD. DCRS ARE WELL BENEATH 1.0 FOR THE REST OF THE NORTHRIDGE GROUND MOTION AS PREVIOUS FIGURES <br />SHOW.