prEN 1991-1-8

Scope

EN 1991-1-8 gives principles and rules to determine the values of wave and current actions on structures and civil engineering works in the coastal zone/area. This document describes the principles of defining the design sea conditions, including design water level variability for structures in the coastal area. This document describes the design principles of determining actions from waves and currents of the following types in the coastal structures zone: — fixed structures: — cylindrical structures; — suspended decks; — sub sea pipelines; — breakwaters: — mound breakwaters; — vertical face breakwaters; — composite breakwaters; — wave screens; — floating breakwaters; — coastal embankments: — revetments; — seawalls; — permanent moored floating structures. For floating structures additional guidance would normally be needed for: — floating platforms related to oil and gas production or processing; — floating platforms for renewable energy production. The scope of this document is outside flood risk management structures like dykes or levees. The document does not include provisions for selection of breakwater layouts (i.e design of harbours), layout of structures to manage sediment transport, scour and beach stability.