CETN-III-6
3/81
PURPOSE:
To aid in the selection of shore protection structures by briefly
comparing the functional applications and limitations of:
bulkheads, sea-
walls, revetments, groins, and protective beaches,
This Coastal Engineering
Technical Note (CETN) introduces a series of five notes on these particular
structures that are primarily for use by Corps personnel who do not have a
background in coastal engineering.
This series of notes provide the type
of information needed for answering inquiries from the general public con-
cerning the function and construction of shore protection alternatives.
DISCUSSION:
The Table presents some of the selection factors for five of
the most common shore protection alternatives.
Cost comparisons are not
Shore protection structures covered here are
included in this discussion.
defined as follows:
1 . Bulkheads are vertical earth-retaining structures;
2. Seawalls are wave-resistant structures;
3 . Revetments are wave-protection structures placed on an existing sloping
embankment;
4 . Groins are walls constructed perpendicular to the shore for the purpose
of trapping sand and for stabilizing an existing or artificially-filled
beach; and
5. Protective beaches are sand beach fills usually constructed to replace
eroding beach material.
The table lists some of the major functions of these coastal structures and
presents the effects the coastal environment has on these structures.
The CETN on each structure should be consulted for more detail.
REFERENCES:
U.S. ARMY, CORPS OF ENGINEERS, COASTAL ENGINEERING RESEARCH CENTER, Fort
Belvoir, VA., 1981:
CETN-111-7, "Bulkheads - Their Applications and Limitations"
"Seawalls - Their Applications and Limitations"
CETN-III-8,
CETN-111-9,
"Revetments - Their Applications and Limitations"
CETN-111-10, "Groins - Their Applications and Limitations"
CETN-111-11, "Protective Beaches - Their Applications and Limitations"
U.S. Army Corps of Enqineers, Coastal Engineering Research Center, Kingman Building, Fort Belvoir, VA 22060
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