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ICONS
BYS = Building altitude class
DTS = Earthquake design class
DD-1 = Earthquake ground motion level
DD-2 with a probability of exceeding 2% (recurrence period 2475 years) in 50 years = earthquake ground with a probability of exceeding 10% in 50 years (recurrence period 475 years) motion level
DD-3 = earthquake ground motion level with 50% probability of exceedance in 50 years (recurrence period 72 years)
DD-4 = earthquake ground motion level with 68% probability of exceedance in 50 years (recurrence period 43 years)
I = Building importance coefficient
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According to Table 3.4 (c) , the ŞGDT approach will be applied so that the performance target under DD-2 earthquake ground motion is Controlled Damage (KH) for existing buildings with DTS = 1,2,3,3a, 4,4a and BYS≥2. Similarly, in existing buildings with DTS = 1a, 2a and BYS≥2 defined as advanced performance targets, the performance target under the influence of DD-1 earthquake ground motion Controlled Damage (KH) and DD-3 under the effect of earthquake ground motion Performance target Limited Damage (SH ) ŞGDT approach will be applied.
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