(Continued)
Construction and Rehabilitation History
1961
The landward end of the west jetty was extended 1,550 ft and sections
of its 3-ft-wide concrete cap were repaired. The landward extension
was carried out between
and
(100-ft section was on exist-
ing jetty) using a 1.5-ft-thick by 16-ft-wide bedding layer of 25- to
200-lb stone, and overlayed with 200- to 2,000-lb stone (largest
pieces on outer surface) to an elevation of
a 4-ft crown
ft
width, and
side slopes. The repairs included resetting
750 lin
of concrete blocks and buttressing these and adjacent
blocks with stone at the following locations:
to
ft) . The cross
to
to
and
(total of 1,030
section of buttressing stone was identical to that used during 1960
Damage was caused by storm waves during Hurri-
repairs (Figure
cane Ethel in September 1960. The cost of improvement was 0,800
with 6,600 and 12,900 tons of stone used on the extension and repair
areas, respectively.
New concrete capping was placed on top of the existing 5-ft-wide cap
1962
and
The cap was
section of the west jetty between
cast in place, 5 ft wide, and the crest elevation was
ft mlg.
Individual blocks were keyed and weighed a minimum of 15 tons but
were not to exceed a length of 40 ft. In addition, stone was placed
(to buttress the existing cap) to an elevation of
ft mlg, a crest
width of 8 ft on each side of the cap, and
side slopes. A
2-ft bedding layer of 25- to 200-lb stone was placed beneath 1- to
2-ton buttressing stone. Preexisting crest elevations, from a
mlg. The total cost
September
survey, were from
to
of the improvements was 5,700 using 1,800 cu yd of concrete and
29,060 tons of stone.
Several segments of the 3-ft-wide west jetty concrete cap section
1966
were repaired, similar to the 1960 and 1961 repairs (Figure
by
resetting and buttressing displaced blocks. About 4,330 lin ft of
the cap blocks were reset, and buttressing of these and adjacent
blocks totaled 4,565
to
at the following locations:
to
to
to
to
to
to
to
and
Also, additional 200- to 2,000-lb stone was placed along 480
ft
to
to
of the jetty at the following sections:
The design geometry for these sections
and
to
was to have a crown elevation of
ft mlg, a 6-ft crown width, and
side slopes. Altogether, 49,000 tons of stone was placed,
and total cost of the repairs was 5,900.
The seaward half of the east jetty was repaired. The design section
1968-
ft mlg crown elevation, an 8-ft crown width, and
consisted of a
1969
side slopes. The repairs required 47,500 tons of 500-lb to
4-ton core stone and resetting 5,440 tons of cover stone. The repair
(Continued)
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