Construction and Rehabilitation History
The 1,000-ft-long outer breakwater extension, as authorized in
1957
1952, was completed. Twelve-ton stone protection was used from sta
to
to
From sta
25-ton unreinforced
tetrapods (1,836 units) were placed on the seaward slope (Fig-
ure 5 ) . Model tests were conducted (US Army Engineer Waterways
Experiment Station
Damages occurred to a portion
to
of the outer
1957-
breakwater, and in 1964 were repaired using 12-ton stones and 1 0
4
1964
25-ton tetrapods. The tetrapods were not model tested for their
adequacy for placement in this area, and they were destroyed over a
period of years.
1973
Repairs were made to the concrete cap of the outer breakwater
and
between sta
1974
Rehabilitation of the outer breakwater between sta
to
was completed. Two layers of 40-ton unreinforced dolosse (246
units) were placed on the seaward slope.
1974
Construction of a 400-ft-long extension of the inner breakwater was
completed (Figure 3 . Model testing was conducted to determine
)
optimum wave conditions (Senter and Brasfeild 1968, Senter 1971).
Repairs were made to the following reaches of the outer breakwater
1979
using 1 - to 30-ton stone: sta
8
to
to
to
to
to
and
to
also were made using
Repairs to sta
through
stone in the 14- to 25-ton range.
Major storms in the winter of 1983 resulted in broken dolosse o n
1983
the outer breakwater. Estimated damage to the structures was
,400,000.
1984
Approximately 23,300 tons of stone were placed to repair various
sections of the outer breakwater between sta
to
1986
The outer breakwater is presently in poor condition. The problem
through
where missing
area is primarily between sta
and/or damaged dolosse are apparent. A contract was issued to
rehabilitate the dolosse section of the outer structure (sta
through
with 700 fiber-reinforced 42-ton dolosse. The dolos
perimeter used special placement, and the dolosse on the outer por-
tion of the seaward transition were entrenched and buttressed with
25-ton stone (Baumgartner, Carver, and Davidson 1985). About 8 of
0
the constructed dolosse were stockpiled on the leeward side of the
jetty for repair contingencies. This rehabilitation effort was
also used to gather data on prototype forces on dolosse. Twenty of
the dolosse (painted red) were instrumented and placed in the main
As of this date, no data have
dolos section at about sta
been received from the prototype dolos study.
(Continued)
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