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Chapter 8
Design of Coastal Structures
8.1 Introduction
The structures in the Coastal région in general said to be Coastal structures
which are an important component in any Coastal development scheme
including its protection. This chapter, provides an up-to-date technical
advances in the design and construction of Coastal structures. The need
for Coastal protection is mainly to provide beach and shoreline stability control by controlling érosion, to develop harbours, to stabilise the
navigation channels at inlets through training walls, to protect the sea
water intakes and outfalls and to retain or rebuild the natural Systems
(cliffs, dunes) or to protect buildings landward of the shoreline from Coastal
flooding.
For the design of these Coastal structures, it is necessary to consider the physical factors such as geomorphology, material characteristics,
tides, winds, storms, waves, currents, shoreline details, bathymetry, littoral drift and the availability of stones of different sizes, availability of
appropriate equipment and the purpose for which the structure are to be
constructed.
Design of Coastal structures is often focused on design values for certain parameters, like the Pmax,2% or pmax for a design impact pressure,
Ru2% for a wave run-up level and q as mean overtopping discharge or
Knax as maximum overtopping wave volume. A structure can then be
designed using the proper partial safety factors, or through probabilistic
approach.
Wave forces are the key forces for design of any Coastal structures and
are highly variable and dépend on both the wave conditions and the type
of structure being considered. When the structure is placed such that the
incident waves are unbroken, then a standing wave will exist seaward of
the wall and only the static and dynamic forces exist. These can be readily
Chapter 8
Design of Coastal Structures
8.1 Introduction
The structures in the Coastal région in general said to be Coastal structures
which are an important component in any Coastal development scheme
including its protection. This chapter, provides an up-to-date technical
advances in the design and construction of Coastal structures. The need
for Coastal protection is mainly to provide beach and shoreline stability control by controlling érosion, to develop harbours, to stabilise the
navigation channels at inlets through training walls, to protect the sea
water intakes and outfalls and to retain or rebuild the natural Systems
(cliffs, dunes) or to protect buildings landward of the shoreline from Coastal
flooding.
For the design of these Coastal structures, it is necessary to consider the physical factors such as geomorphology, material characteristics,
tides, winds, storms, waves, currents, shoreline details, bathymetry, littoral drift and the availability of stones of different sizes, availability of
appropriate equipment and the purpose for which the structure are to be
constructed.
Design of Coastal structures is often focused on design values for certain parameters, like the Pmax,2% or pmax for a design impact pressure,
Ru2% for a wave run-up level and q as mean overtopping discharge or
Knax as maximum overtopping wave volume. A structure can then be
designed using the proper partial safety factors, or through probabilistic
approach.
Wave forces are the key forces for design of any Coastal structures and
are highly variable and dépend on both the wave conditions and the type
of structure being considered. When the structure is placed such that the
incident waves are unbroken, then a standing wave will exist seaward of
the wall and only the static and dynamic forces exist. These can be readily