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Table 1 basic shape factor Fe [16]

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