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In the performance analysis of existing buildings (linear and non-linear), effective section stiffnesses are determined according to TBDY Table 4.2 .

  • The effective section stiffnesses are determined automatically according to 4.5.8 .

Effective cross-section stiffnesses in earthquake performance to be determined within the scope of evaluating existing buildings are made according to Table 4.2 specified in TBDY Section 4.5.8 .

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