Coastal Engineering: Processes, Theory and Design Practice by Fleming Christopher

Author:Fleming, Christopher [Fleming, Christopher]
Format: epub
Publisher: Taylor and Francis CRC ebook account
Published: 2009-03-22T16:00:00+00:00

A related concept that is sometimes used is the degree of security, defined as the probability of a given condition not being exceeded over a fixed period. (This is of course just 1 minus the probability of the condition being exceeded.) Graphs of the return period against the degree of security for fixed periods of 2–100 years are drawn in Figure 7.4 . So, for example, a structure designed to withstand the 1 in 100-year conditions provides a degree of security of ~0.73 over a period of 30 years.

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