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Submerged breakwater is an off shore breakwater, with its crest at
or below the SWL, used for creation of protected area of water or
for protection of coastal structures and beaches from damage of
erosion caused by wave action. Reef breakwaters are coast parallel
structures built with an objective of reducing the wave action on
the beach by forcing wave breaking over the reef. The present work
involves the experimental study on submerged breakwater made of
concrete cube armour of varying sizes. A stable trapezoidal
submerges breakwater having a slope of 1V:1.75H with a crest width
(B) of 0.1m and height (h) of 0.25m is constructed, with homogenous
pile of concrete cubes. Two such reef models are designed with
concrete cubes weighing 45g and 50g as given by various design
criteria. The models are tested in water depth of 0.4m with varying
wave heights (0.1m to 0.16m) and wave periods (1.5s to 2s). During
the investigation the reduction in crest height, wave incident and
transmission over submerged breakwater are observed and the
stability parameters are analysed and studies.
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