Diplomat
Marina, Florida
Coastal Systems International, Inc. provided environmental
permitting, engineering design, and construction administration
services for the bulkhead and docking improvements. A
field investigation was conducted to assess the structural
condition of the existing docking facilities and bulkhead.
Bathymetry was also obtained, and the seagrass resources
were mapped. Based on these field investigation and environmental
permitting requirements, conceptual designs of the docking
improvements were developed, and the alternatives were
presented in a comprehensive engineering report. Construction
cost estimates were provided in the report to assist the
owner in preparing budgets for construction.
Once
the owner selected a docking alternative, Coastal Systems
completed the final engineering design of the improvements
consisting of approximately 300 linear feet of new bulkhead
with king piles and precast concrete panels. The remaining
850 linear feet of bulkhead was rehabilitated with a
new concrete cap and steel sheet piling. The entire
length of the bulkhead was designed with concrete batter
piles driven seaward of the bulkhead, in lieu of tie-backs
that would have interfered with upland construction.
Riprap was placed along the bulkhead in selected areas
as marine habitat. An overwater slab was designed, supported
by concrete caps and precast deck planks, to create
additional development area for the marina. Timber docks
were constructed using greenheart piling and IPE decking
for maximum service life. Fourteen slips were constructed
for boats up to 45 feet and three slips were constructed
for boats in excess of 70 feet.
Utilities including pedestals with water, electrical,
telephone and cable TV were designed including 200 amp
service for mega-yachts. A fire protection system using
foam was also provided. Docking alternatives, consisting
of a 931 linear foot marginal dock on top of the bulkhead,
associated finger piers, and another 600 linear feet
of concrete docks were also designed and may be constructed
in the near future. Complete utility designs were provided
along with dock accessory layouts.
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