From: New definition for torsional irregularity based on floors rotations of reinforced concrete buildings
Re
Fe
Re ≤ 0.15
1
0.15 < Re < 0.3
1/ [1+\( \frac{0.5}{0.15}\ \left(\mathit{\operatorname{Re}}-0.15\right)\Big] \)
0.3 ≤ Re
1/1.5