Research Article
Seismic Response Analysis of Pier considering Durability Damage Repair
Table 4
Environmental grade and parameters of chloride erosion.
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 |  | Environmental category | Environmental grade | Environmental condition | t1(a) |  | 
 |  | Offshore atmospheric environment | IIIa | Within one kilometer from the coast | 20∼30 |  | IIIb | Within one kilometer from the coast | 15∼20 |  | IIIc | Within one kilometer from the coast | 10∼15 |  | IIId | Within one kilometer from the coast | 10 |  | 
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