Diplomat,
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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