For Concrete Structures: OBE (operational basis earthquake) = 144-yr Return Period (50 percent chance of being exceeded in 100 years).<\/p>\n
Max. Design EQ: for Structures Defined As Critical use MCE, In general for other structures, MDE = 950-yr return period (10 percent chance of being exceeded in 100 years).<\/p>\n
MCE is defined as the greatest earthquake that can reasonable be expected to be generated by a specific source (which comes from a deterministic site hazard analysis).<\/p>\n
USACE references:\u00a0Stability Analysis of Concrete Structures<\/a>,\u00a0Earthquake Design and Evaluation of Concrete Hydraulic Structures<\/a>,\u00a0Earthquake Design and Evaluation for CW Projects<\/a>.\u00a0Safety of Dams – Policies and Procedures<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" For Concrete Structures: OBE (operational basis earthquake) = 144-yr Return Period (50 percent chance of being exceeded in 100 years). Max. Design EQ: for Structures Defined As Critical use MCE, In general for other structures, MDE = 950-yr return period … Continue reading