Performance level | Calculation method and limits |

Limited damage limit condition (LD) | 1) Linear calculation method used; a) Calculated strengths subjected to vertical loads and undamped projected earthquakes not exceeded. b) The sidesway ratio under undamped earthquake loading does not exceed the 0.3% limit. |

Controlled damage limit condition (CD) | 1) Linear calculation method used; a) Calculated strengths subjected to vertical loads and projected earthquakes damped by R b) The sidesway ratio under undamped earthquake loading does not exceed the 0.7% limit. |

2) Nonlinear calculation method used; a) The sidesway ratio does not exceed the 0.7% limit. b) The deformation capacities of the materials not exceeded. | |

Pre-collapse limit condition (PC) | 1) Linear calculation method used; a) Calculated strengths subjected to vertical loads and projected earthquakes damped by R b) The sidesway ratio under undamped earthquake loading does not exceed the 1% limit. 2) Nonlinear calculation method used; a) The sidesway ratio does not exceed the 1% limit. b) The deformation capacities of the materials may be exceeded by a limited amount (~1.2 times). |