Book 1 - City of St. Petersburg

The Underwater Feature will be constructed of concrete
designed to accommodate underwater habitat development.
The piles supporting the reef structure will be spaced 10 to
20-ft. apart and will not measurably inhibit flow through the
reef area. As such, the reef is not expected to result in adverse
impacts to the environment and may provide a net benefit to
the environment by creating fish habitat and promoting reef
development.
Construction Methodologies
Demolition shall be performed by sawcutting, shearing, and
jack-hammering existing concrete using land and water-based
equipment. Turbidity barriers will surround the active demolition
areas and water quality will be sampled for turbidity. Markers
will be placed at the perimeter of the existing seagrass beds to
prevent construction equipment from entering the seagrass area.
Concrete piles identified to be fully removed may require
water and air jetting to remove the piles from the bay bottom
sediments. Turbidity within the curtained area due to jetting will
be measured and the barriers will be left in place until turbidity
returns to background levels.
Concrete will be processed for size and to remove exposed
reinforcing steel bars. Concrete will be hauled to the disposal
location using barges or trucks. Following demolition the bay
bottom will be surveyed and divers will recover any demolition
debris that has fallen to the bay bottom.
The shoreline revetment at Albert Whitted Airport will be
constructed by directly placing concrete material taken from the
existing Pier substructure into place by dumping from a truck or
pushing into place via dozer and/or excavator bucket. Dust and
small debris will not be permitted at the revetment and will be
taken to an approved landfill or recycler.
The new Pier will be constructed using land based equipment
staged from the existing Pier (prior to Pier demolition) or using
water based equipment. Turbidity barriers will surround the
active demolition areas and water quality will be sampled for
turbidity. Pre-cast concrete and/or steel pipe piles will be driven
using impact or vibratory hammers or by water and air jetting
into place. Pier decks, the Promontory, the concrete Canopy, and
reef structure will be constructed using pre-cast and/or cast in
place concrete.
Upland construction will begin following installation of silt
fencing around the construction area and filter media installed
at storm drain inlets. Exposed soil will be landscaped or planted
with grass prior to removal of silt fencing.
MICHAEL MALTZAN ARCHITECTURE, INC. 3 - 141