Determination of R and D Coefficients According to the Type of Structural System

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Last updated: Nov 22, 2022 by Zeynep Aladağ
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Symbols

R = Structural system behavior coefficient
D = Excess of strength coefficient

General Assessment

  • In accordance with the permitted building height class, BYS=6 ≥ 3, response modification coefficient for buildings where all the earthquake effects are covered by steel moment frames with high ductility level, R=8 and overstrength factor is given as D=3, according to TBDY Table 4.1.

Selected R and D Coefficients

  • C11 moment transferring frame is selected for both directions.

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