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R = Structural system behavior coefficient
D = Excess of strength coefficient
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General
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Assessment
According to TBDY Table 4.1, in accordance with the permitted building height class, BYS=6≥36 ≥ 3, structural response modificita modification coefficient for buildings where all the earthquake effects are covered by steel moment frames with high moment transmitting ductility level, R=8 and strength excess coefficient overstrength factor is given as D=3. .
Selected R and D Coefficients
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