One
Miami, Florida
Coastal Systems International, Inc. provided coastal
engineering and environmental permitting consulting
services to secure a Conditional Letter of Map Revision
(CLOMR) for the One Miami Condominium Development in
Downtown Miami. The CLOMR allowed the developer to adjust
the FEMA (Federal Emergency Management Agency) flood
zone from a VE designation to an AE designation, maintaining
a 30-feet wide VE buffer zone adjacent to the seawall,
thereby saving considerable construction costs and future
insurance rates for the condominium development. The
analysis included an above/below water evaluation of
the existing steel sheet pile seawall to evaluate the
potential for the wall to withstand the FEMA coastal
storm event. Wave forces were calcu
lated to evaluate the structural stability of the wall
utilizing the FEMA WHAFIS Model. In addition, a free
of obstruction analysis was performed to verify that
proposed improvements did not adversely impact the site
and neighboring properties/structures.
Coastal
Systems designed and permitted, through multiple environmental
agencies, an underwater toe scour apron system to stabilize
the toe of the seawall during coastal storms. The toe
scour protection uses an articulated concrete mat that
is held in place by concrete piles. The piles insure
that the concrete mats will not migrate into the nearby
Corps of Engineers Navigational Channel. Construction
of the toe scour protection system was completed in
2004. Coastal Systems also designed concrete cap repairs
to improve aesthetics for the seawall.
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