Design Crest Elevation

Extreme crest elevation measured relative to still water level

NOTE The design crest elevation is used in combination with information on astronomical tide, storm surge, platform

settlement, reservoir subsidence and water depth uncertainty and is derived from an extreme value analysis. Because of the simplified nature of the models used to estimate the kinematics of the design wave, the design crest elevation can be different from, usually somewhat greater than, the crest elevation of the design wave used to calculate actions on the structure.

Source: API RP 2MET, Derivation of Metocean Design and Operating Conditions, First Edition, November 2014. Global Standards

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