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Engineering Design Criteria

a) Vessel Berthing Loads:Berthing loads are in accordance with British Standard BS 6349, Part 4 Code of Practice for Design of Fendering and Mooring Systems and the

following parameters an angle of Approach: 10 degrees.

b) Berthing VelocityPerpendicular to Wharf for 30,000 DWT is 0.12 m/sec (0.394 fps), and for60,000 DWT is 0.092 m/sec (0.302 fps).

c) Allowable Hull Pressure200 kPa (4.18 ksf). Bow Radius for 30,000 DWT is 55 meters (180 feet) andfor 60,000 DWT is 80 meters (263 feet).

d) Factor of SafetyFender System is 2.0

e) Mooring LoadsWind, Wave and Currents on ship (Ws, Wvs and Cs respectively) aredetermined based on the British Standards BS 6349 Part 4.

f) Maximum imposed load combinations on the port structuresUse OPTIMOOR model.

g) Seismic Loads (E):Seismic loads will be determined in accordance with CUBiC, UBC andSEAOC requirements for Zone 2+

1conditions. Z factors are: 0.50 (CUBiC

& UBC 1985) and 0.20 (UBC 1988 and SEAOC 1990) and SEAOC Zone 2+.Structure Importance shall be Class I, I=1.5. Percentage of Live load to beused shall be ten (10) percent in computing vertical loads

h) Temperature (T), Creep (R) and Shrinkage (S):Steel Structures 10C to 60C (50F to 140F)Concrete Structures: Starting from 27C (80F) rise 16C (30F), fall 10C

(18F).Assume shrinkage strain of 0.0002 for concrete per AASHTO.

i) Wind Operational and Hurricane (W and Wh): ASCE/SEI 7.The basic wind speed is defined as a 3 second gust speed at 10 m aboveground in Exposure C conditions, associated with an annual probability ofoccurrence of 0.02.Operating Wind Velocity is 18 m/s (40 mph) with ships moored at facilityDesign wind is 33 m/s (74mph) per CUBiC Building Code.

Hurricane design wind is 42 m/s (115 mph)

j) Current (C)For normal currents a minimum speed of 0.5 m/s (1.0 knots) is used.

The port elevation +3.5m CD and the guideline for water levels are:

Project Datum MSLWater LevelMeters Feet Meters Feet

Highest AstronomicalTide

(HAT) 1.4 4.6 0.7 2.3

Mean Higher HighWater

(MHHW) 1.2 3.9 0.5 1.6

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Project Datum MSLWater LevelMeters Feet Meters Feet

Mean High Water (MHW) 1.1 3.6 0.4 1.3Mean Sea Level (MSL) 0.7 2.3 0.0 0.0Mean Low Water (MLW) 0.5 1.6 -0.2 -0.7Mean Lower Low

Water

MLLW) 0.2 0.7 -0.5 -1.6

Lowest AstronomicalTide)

(LAT) 0 0 -0.7 -2.3

The design complies with the recommendation in applicable codes listed as follows:

International Building Code (IBC) 2006 and Caribbean Unified Building Codes(CUBiC) Code 1985 1986, whichever is more stringent.

American Society of Civil Engineers (ASCE) ASCE/SEI 7-05 Minimum DesignLoads for Building and Other Structures (wind load)

British Standards Institution (BSi) BS 6349 Maritime Structures 2000. American Association of State Highway and Transportation Officials (AASHTO)

- Standard Specifications for Highway Bridges (vehicularloads).

United Facilities Criteria (UFC)Geotechnical Engineering Procedures for Foundation Design of Buildingsand Structures, UFC 3-220-01N 15 August 2005 (superseding NAVFACDM 7.01, 7.02 and 38.4)

Permanent International Association of Navigation Congresses (PIANC),Approach Channels A Guide for Design, June 1997

US Army Corps of Engineers (USACE) PublicationsDesign of Sheet Pile Walls. Engineer Manual 1110-2-2504, 31 March 1994

Coastal Engineering Manual. Engineer Manual 1110-2-1100, U.S. Army Corps

of Engineers, Washington, D.C. (in 6 volumes).Hydrographic Surveying. Engineering Manual 1110-2-1003.Design of Deep-Draft Navigation Projects. Engineering Manual 1110-2-1613. Design of Coastal Revetments, Seawalls and Bulkheads.Engineering Manual 1110-2-1614.

Design Code Guidelines Concrete:

American Concrete Institute (ACI)- Building Code Requirements forStructural Concrete (ACI - 318-05)Precast Concrete Institute (PCI) - Recommended Practice for Design,Manufacture and Installation of Pre-stressed Concrete Piling; PrestressedConcrete Piling Interaction Diagrams.

Steel:Structural Steel: American Institute of Steel Construction (AISC) SteelConstruction Manual (13th Edition)Stainless Steel: ASCE Standard Specification for the Design of Cold-Formed Stainless Steel Structural Members SEI/ASCE-8-02.

Welding:Steel: American Welding Society (AWS) Structural Welding Code-Steel D1.1.Aluminum: AWS Structural Welding Code Aluminum D 1.2.Reinforcing Steel: - Structural Welding Code - Reinforcing Steel AWS D1.4.Stainless Steel: Structural Welding Code Stainless Steel D 1.6.Rail: Recommended Practices for the Welding of Rails and Related RailComponents for use by Rail Vehicles - AWS D15.2

Aluminum: The Aluminum Association (AA)

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Aluminum Design Manual (2005 Edition).Specifications for Aluminum Structures

Timber:American Institute of Timber Construction (AITC) - Timber ConstructionManual.National Design Specification (NDS) for Wood Construction.

Western Wood Preservers Institute (WWPI) - Best Management Practicesfor the Use of Treated Wood in Aquatic EnvironmentsAmerican Wood Preservers Association (AWPA) Preservatives PressureTreatment

Masonry:Building Code Requirements for Masonry Structure ACI-530 and ACI-531for Concrete Masonry Structures.

Site CivilAmerican Association of State Highway and Transportation Officials(AASHTO)Guide for Design of Pavements Structures, AASHTO, Washington, D.C.,

1993A Policy on Geometric Design of Highways and Streets, AASHTO,

Washington, D.C., 2004Asphalt Institute, Thickness Design Asphalt Pavements for Heavy WheelLoads, First Edition, 1996American Concrete Pavement Association, Design of Heavy IndustrialConcrete Pavements, 1988Portland Cement Association (PCA)Guide Specification for Construction of Roller-Compacted Concrete

Pavements, 2004.Structural Design of Roller-Compacted Concrete for Industrial Pavements,

2004.U.S. Department of Transportation, Federal Highway Administration,Manual on Uniform Traffic Control Devices (MUTCD), 2003

Buildings:

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS (ASHRAE)ASHRAE 90.1 (2001; various Errata) Energy Standard for Buildings Except

Low-Rise Residential BuildingsU. S. GREEN BUILDING COUNCILUSGBC LEED GBRS (Nov 2002) LEED Green Building Rating System,

Version 2.1USGBC LEED RG (June 2001) LEED Reference Guide, Version 2.0USGBC LEED NC (2002; R 2005) Leadership in Energy and

Environmental Design(tm) Green Building Rating System for NewConstruction

National Electrical Code, 2005National Fire Protection Association (NFPA), 2006IEEE Recommended practice for Electric Power Systems in CommercialBuildingsUniform Plumbing Code, 2003BICSI Telecommunications Distribution Methods ManualEnvironmental Protection Agency Design Manual On-Site WastewaterTreatment and Disposal SystemsTrinidad & Tobago Bureau of Standards TTS.547: Specifications for theEffluent from Industrial Process Discharge into the Environment Environmentally Sensitive Areas.

MaterialsAmerican Society for Testing and Materials (ASTM):

A 6/ 6M General Requirements for Rolled Structural Steel Bars,Plates, Shapes, and Sheet Pilings

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A 36/ A 36M Carbon Structural SteelA 148/ A 148M Steel Castings, High Strength, for Structural PurposesA 153/ A 153M Zinc Coating (Hot-Dip) on Iron and Steel HardwareA 185 Steel Welded Wire Reinforcement, Plain, for ConcreteA 193/ A 193M Alloy-Steel and Stainless Steel Bolting Materials for High-

Temperature Service

A 252 Welded and Seamless Steel Pipe PilesA 307 Carbon Steel Bolts and Studs, 60 000 PSI Tensile StrengthA 325 Structural Bolts, Steel, Heat Treated, 120/105ksi Minimum

Tensile StrengthA 416/ A 416M Steel Strand, Uncoated Seven-Wire for Prestressed

ConcreteA 490 Structural Bolts, Alloy Steel, Heat Treated, 150ksi Minimum

Tensile StrengthA 500 Cold-Formed Welded and Seamless Carbon Steel Structural

Tubing in Rounds and ShapesA 572/ A 572M High-Strength Low-Alloy Columbium-Vanadium Structural

SteelA 615/ A 615M Deformed and Plain Billet-Steel Bars for Concrete

ReinforcementA 653/ A 653M Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-

Coated (Galvannealed) by the Hot-Dip ProcessA 706/ A 706M Low-Alloy Steel Deformed and Plain Bars for Concrete

ReinforcementA 924/ A 924M General Requirements for Steel Sheet, Metallic-Coated by

the Hot-Dip ProcessA 934/ A 934M Epoxy-Coated Prefabricated Steel Reinforcing BarsA 992/A 992M Structural Steel ShapesB 221 Aluminum and Aluminum-Alloy Extruded Bars, Rods and

Wire, Profiles and TubesC 33 Concrete AggregatesC 62 Building Brick

C 73 Calcium Silicate Brick (Sand-Lime Brick)C 90 Load Bearing Concrete Masonry UnitsC 150 Portland CementC 260 Air-Entraining Admixtures for ConcreteC 476 Grout for MasonryC 857 Minimum Structural Design Loading for Underground Precast

Utility StructuresC 902 Pedestrian and Light Traffic Paving BrickC 989 Ground Granulated Blast-Furnace Slag for Use in Concrete

and MortarsC 1202 Electric Indication of Concretes Ability to Resist Chloride Ion

PenetrationD 25 Round Timber Piles

D 1557 Laboratory Compaction Characteristics of Soil UsingModified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))

D 1751 Preformed Expansion Joint Filler for Concrete Paving andStructural Construction (Non Extruding and ResilientBituminous Types)

D 1760 Pressure Treatment of Timber ProductsD 2487 Classification of Soils for Engineering Purposes (Unified Soil

Classification System)D 3282 Classification of Soils and Soil-Aggregate Mixtures for

Highway Construction PurposesD 6109 Flexural Properties of Un-reinforced and Reinforced Plastic

Lumber