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OLE and CLE definitions

OLE and CLE definitions

(OP)
How to determine the return period of OLE (Operating Level Earthquake) and CLE (Contingency Level Earthquake)?

Do they vary based on different types of projects?

Thanks.

RE: OLE and CLE definitions

I'm not familiar with the specific terminology you are using, but in most codes dealing with a probabilistic method of assessing the risk of an event occurring within a certain period, it will depend on the design life of the structure (i.e. 5 years vs 100 years for example) and the 'importance' of the building (i.e. consider an airport vs a residential house for example).

So yes the return period will more than likely vary based on different types of project.

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