This study adopted the seawall design recurrence interval
proposed in the Guidelines on the Design of Coastal Revetments
(WRPI, 2010d) as the code for coastal protection structural
designs. In addition, the coastal protection levels of the
different type of land use were also designated according to the
risk levels. Regarding high intermediate and low intermediate
levels, because overall coastal protection will be realized by the
combined employment of engineering and non-engineering
measures, the codes for these two levels were flexibly formulated
based on the actual combinations of protection measures.
The proposed principles for formulating the coastal protection
structural design codes for various risks are as follows: