engineering text for boards

Engineering

In the aftermath of Hurricane Sandy, we are faced with numerous engineering challenges in rebuilding this playground. We want to minimize the amount of damage from future storm surges. The challenges we face include

•minimizing the effect of beach erosion from long shore drift and storm surges;

•protecting boardwalk and playground structures from future storm damage and flooding;

•providing a barrier between the playground and beach while still making the beach accessible;

•providing foundations for our proposed sea wall on soil with low bearing capacity;

•providing structures which exceeds the recommended two foot freeboard (clearance) above the proposed Advisory Base Flood Elevation (ABFE) maps for New York along Rockaway Beach, and

•providing engineering solutions to meet all of the playgrounds’ redesigned aesthetic and functional requirements.

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After much thought and research the following engineering solutions where developed.  Consideration was given to the relative cost, ease of construction, effectiveness, reduced maintenance cost and environmental impacts. These engineering solutions were developed to adequately satisfy the above mentioned challenges.

•The construction of groynes to provide coastal protection and minimize the effect of beach erosion and long shore drift on the coastline

•The construction of a seawall along the length of Sand Piper playground provides added protection of on-shore structures and prevents them from being eroded ,flooded or destroyed by the forces of wave action

•Innovative design of the seawalls façade allows access to the beach, a seating area for views of the sunset, and a supporting structure for the boardwalk

•End bearing piles support new structures on soils of weak bearing capacity

•Increasing the height of our park to coincide with FEMA new flood level directives.

the use of solar powered lighting fixtures to provide  light for safety and after hours access to park facilities

the design of ramps to allow for access and use of our park to the physically challenged and disabled

The design of plumbing needs to satisfy park features, comfort stations etc..

The use of innovative wave energy converters such as the “ANACODA” for the harnessing of wave energy for power generation.

SEAWALLS

Seawalls are designed to protect the shore from being eroded or flooded. It also protects recreational activities like parks from being destroyed by the force of the waves. Seawalls reflect the energy of the wave back to the ocean. Three types of seawalls include a curve, mound, and vertical sea wall. They can be made up of concrete, steel or rubble. Overall, sea walls have disadvantages and disadvantages.

Vertical sea walls absorb wave energy which aids in helping the coast to not be destroyed. Unfortunately, vertical sea walls get destroyed at a faster rate than other types of sea walls, and will cost a lot of money to repair.

Curved sea walls are designed so that the waves would not reach the top of the wall. The curved design of the sea wall protects the base of the wall. The disadvantage of a curved sea wall is that the material beneath the wall becomes eroded when the energy of the sea wall is reflected back into the ocean.

Mound sea walls are often used when tidal waves are not so strong. They can be made up of sandbags, stones or porous rocks

Plumbing design for water feature:

To satisfy the requirements of sand pipers water feature potable water from the cities water supply will be used to ensure health and safety, system includes:

•Backflow preventer to prevent reverse flow to city supply

•Pumps to maintain required flow pressure

•Valve box and activators  to regulate flow and sequence of water feature

•Piping to individual flush mount and  above grade sprays and showers

•Drains and drain pipes to convey grey water to sediment traps before being                                 released into city waste water