Asbestos-Cement. Sheet piling made of this material has been tried in several locations.
Indications are that it often suffers significant and rapid deterioration in a marine environment [Watson,
Machemehl, and Barnes (1979)] and should be used with caution when long life is desired.
Post Supported Bulkheads
Post supported bulkheads consist of regularly spaced posts, usually timber, driven into the
ground with an attached facing material that forms a retaining wall. The posts, support c6mponents of
the bulkhead, resist the exerted earth pressures. As with sheet piling, a post supported bulkhead can be
either a cantilever or anchored.
One advantage is that the posts can sometimes be installed using only an auger, and the facing
material can then be placed by hand. The cost of the bulkhead depends on the required spacing of the
posts, and the type of soil being augured.
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