17-outer harbor gateway - Louisiana State University

NY-NJ OUTER

Dennis V Padron MSc, PE, A
Graeme Forsyth BSc (Hon

ASCE – Met Section – Infrastru

R HARBOR GATEWAY

ASCE, Executive Vice President

Halcrow

and
ns), CEng, FICE, FIES, Director

Halcrow

31st March 2009

ucture Group – Seminar 2009

Content of Presentation

ƒ Background
ƒ Location and Concept
ƒ Potential Barrier Issues
ƒ Gate Requirements
ƒ Gate Types
ƒ Sluice Requirements
ƒ Sluice Types

ƒ Questio

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ƒ Causeway Requirements
ƒ Causeway Types
ƒ Berm Requirements
ƒ Berm Types
ƒ Construction Issues
ƒ Construction Cost
ƒ Where do we go from here
ons

ucture Group – Seminar 2009

Background

Top ten cities (in terms of assets) with high
extremes:

ƒ Miami
ƒ Greater New York
ƒ New Orleans
ƒ Osaka-Kobe
ƒ Tokyo
ƒ Amsterdam
ƒ Rotterdam
ƒ Nagoya
ƒ Tampa-St Petersburg
ƒ Virginia Beach

The Organization for Economic Co-operation and
Development (OECD) , Nov 08

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

hest exposure and vulnerability to climate

New York Observer

ucture Group – Seminar 2009

Background

ƒ Previous presentations include sto
- the upper East River
- the Narrows
- the mouth of the Arthur Kill

ƒ This presentation discusses an alt
- the Outer Harbor Gateway bar
New York Bight

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

orm-surge barriers at:

ternative to the latter two:
rrier across the mouth of the

ucture Group – Seminar 2009

Background

ƒ New York Harbor at apex of New York B
ƒ Hydrodynamics dominated by oceanic b

the Hudson River

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

Bight
boundary and inland flows, primarily

ucture Group – Seminar 2009

Location and Concept

Outer Harbor Gateway Barrier System
ƒ Spans mouth of the New York Bight

between Sandy Hook and Breezy Point
ƒ Protects most of the greater New York

area from flooding
ƒ Includes terrain enhancements along

Sandy Hook and Rockaway peninsulas

Considerations
ƒ Barrier opacity, number of openings,

sluices and circulation, flow velocities
ƒ Timing of closure, fluvial flow build-up

outflanking, operational procedures
ƒ Environmental
ƒ Socio-political

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

s
p,

ucture Group – Seminar 2009

Location and Concept

Sl
neces

Sandy H

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

Breezy Point

luices as Rockaway Inlet
ssary for flood gate

opacity

Main navigational
openings & control
tower

Sandy Hook Channel
flood gate

Hook

ucture Group – Seminar 2009

Potential Barrier Issues

Ship Navi
Hydrodyn
Geomorph

Water Qu
Design

Environment
Risk, Reliability and

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

igation
namics
hology
uality

Life
tal Impact
d Consequence

ucture Group – Seminar 2009

Gate Requirements

Withstand the Flood Event
ƒ Exposed location open to Atlantic
ƒ Overall height around 80 ft (normal wa
ƒ Potential for future channel deepening
Available on Demand
ƒ Navigable by ocean going ships (width
ƒ Structural, mechanical and electrical m
ƒ Able to be deployed in bad weather (hi

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ater depth 50 ft)
g
h and depth of channel)
maintenance
igh winds + large waves)

ucture Group – Seminar 2009

Gate Types

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Gate Types Possible
Typ

Vertical Lift Vertical Fall Rolling Gates Miter Gates
Gates Gates (Caissons)

Large Radiu
Axis Sect

Maeslant and St. Petersburg

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

e Gate
pes

Base-hinged Rising Sector Radial Fall Vertical Axis
Flap Gates Gates Gates Sector Gates

us Vertical
tor Gates

ƒ Suitable for wide channel
ƒ Stored and maintained in dry

ucture Group – Seminar 2009

Large Radius Vertical Axis Sec

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway
ctor Gates

ucture Group – Seminar 2009

Ambrose Channel Gates

Ambrose Channel 2,000 ft wide
Each gate channel 600 ft wide
Control island 800 ft wide

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Sandy Hook Channel Gate

Lifting gate 300 ft wide

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Sandy Hook Channel Gate

Gate open Gat
for

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

te closed Gate raised for
r defense maintenance

ucture Group – Seminar 2009

Sluice Requirements

Water Quality
ƒ Provides water circulation vents
ƒ Provides potential control of flushing a
ƒ Allow passage of marine life
ƒ Influences environmental impact

Operational issues
ƒ Provides control of water velocities
ƒ Influences sedimentation

Defense issues
ƒ Improves defense reliability
ƒ Improves control over closure timing

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

Sluices as
necessary
for opacity

actions

ucture Group – Seminar 2009

Sluice Types

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Horizontal Axis Sector Sluice

ƒ 80± ft wide
ƒ Groups of 10±
ƒ Sufficient number to provide required op

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

pacity

ucture Group – Seminar 2009

Causeway Requirements

Connect the Gates
ƒ Span over 5 miles across apex of New
ƒ Lowest feasible environmental impact
ƒ Minimize socio-economic issues such
ƒ Possible multi-use options (highway/u
Withstand Normal and Storm Conditions
ƒ Structural stability against aggressive

storm conditions)
ƒ Low/minimal maintenance and risk
ƒ Available material for construction

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

York Bight
as recreation value and aesthetics
utilities)
wave climate (both operational and

ucture Group – Seminar 2009

Causeway Types

OPTION
Armor rock (rubble mound)
Concrete armor units
Caissons
Connected piers (such as Oosters

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

scheld) PRINCIPAL MATERIAL
Rock
Rock and Concrete
Concrete and fill
Concrete and steel

ucture Group – Seminar 2009

Causeway Types

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Armor Rock Causeway

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009

Berm Requirements

Deflect and Mitigate Surge Waters
ƒ Extent relative to topography and cons
ƒ Construct without critical impacts on h

environmental/landscape
Withstand Flood Event
ƒ Increase land elevation sufficiently to w
ƒ Structural stability against low-frequen
ƒ Inoperable during normal/operational c
ƒ Issues of seepage

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

sideration of factors (10± miles)
housing/businesses, access routes and
withstand predicted design life surge
ncy occurrence
conditions

ucture Group – Seminar 2009

Berm Types

OPTION
Articulated concrete blocks / matt
(usually connected by steel wires
Gabion structures (metal wire bas
Grouted or cemented slopes
Reinforced and vegetative soils
Impervious layers such as asphal
bituminous pavement
Flexible structures such as geotu

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

tresses PRINCIPAL MATERIAL
s / rods) Concrete
skets)
Rock and steel
lt and Grout/cement
Earth and geotextile
Asphalt or bitumen

ubes Geotextile and sand

ucture Group – Seminar 2009

Berm Types

ASCE – Met Section – Infrastru

NY-NJ Outer Harbor Gateway

ucture Group – Seminar 2009