Chapter 330 Marine - Washington State Department Of .

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Chapter rencesDesign Specifications MatrixDesign 9Tidal InformationSlipsBerthing and Mooring CriteriaWave, Flood, and Coastal Storm LoadingGeneralThis chapter identifies the major marine structures associated with a ferry terminalalong with the specifications used for their design. Refer to Exhibit 330-2 for a samplelayout of the marine structures and the chapters covering their design.This chapter also provides guidelines for designing the ferry terminal slip berthingstructures (wingwalls, fixed dolphins, and floating dolphins) in addition to vessel andtidal information relevant to their design. Wingwall and dolphin design are discussedin more detail in Chapters 630, 640, and 650.Vashon Ferry Terminal Slip 1Exhibit 330-1WSF Terminal Design Manual M 3082.05April 2016Page 330-1

MarineChapter 330Example Marine Structures LayoutExhibit 330-2Page 330-2WSF Terminal Design Manual M 3082.05April 2016

Chapter 330MarineFor additional information, see the following essibilitySecurityEnvironmental ConsiderationsWingwallsFixed DolphinsFloating DolphinsReferencesUnless otherwise noted, any code, standard, or other publication referenced hereinrefers to the latest edition of said document.(1)Federal/State Laws and Codes28 CFR Part 35 Nondiscrimination on the Basis of Disability in State and LocalGovernment Services33 CFR Part 66 Private Aids to Navigation33 CFR Part 154 Facilities Transferring Oil or Hazardous Material in Bulk33 CFR Part 165.1317 Security and Safety Zone; Large Passenger Vessel Protection,Puget Sound and adjacent waters49 CFR Part 39 Transportation for Individuals with Disabilities – Passenger Vessels49 CFR Part 661 Buy America Requirements – Surface Transportation Assistance Actof 1982, as amendedWAC 296-56 Safety Standards – longshore, stevedore and relatedwaterfront operationsWAC 296-56-60115 Other protective measuresWAC 296-876 Ladders, portable and fixedRCW 47.28.030 Contracts — State forces — Monetary limits — Small businesses,veteran, minority, and women contractors — Rules — Work on ferry vessels andterminals, ferry vessel program(2)Design Codes and SpecificationsAASHTO LRFD Bridge Design Specifications (AASHTO LRFD), AmericanAssociation of State Highway and Transportation Officials, Washington, D.C.AASHTO Guide Specifications for LRFD Seismic Bridge Design (AASHTOGuide), American Association of State Highway and Transportation Officials,Washington, D.C.AASHTO Guide Specifications for Bridges Vulnerable To Coastal Storms, AmericanAssociation of State Highway and Transportation Officials, Washington, D.C.AASHTO LRFD Movable Highway Bridge Design Specifications (AASHTOMovable), American Association of State Highway and Transportation Officials,Washington, D.C.WSF Terminal Design Manual M 3082.05April 2016Page 330-3

MarineChapter 330AASHTO LRFD Guide Specifications for the Design of Pedestrian Bridges (AASHTOPedestrian), American Association of State Highway and Transportation Officials,Washington, D.C.ASCE Minimum Design Loads for Buildings and Other Structures, ASCE/SEI 7-10,2010, American Society of Civil Engineers, Reston, VA.ASCE Seismic Design of Piers and Wharves, ASCE/COPRI 61-14, 2014, AmericanSociety of Civil Engineers, Reston, VA.ASCE Flood Resistant Design and Construction, ASCE/SEI 24-14, 2014, AmericanSociety of Civil Engineers, Reston, VA.FEMA Coastal Construction Manual: Principles and Practices of Planning, Siting,Designing, Constructing, and Maintaining Residential Buildings in Coastal Areas,FEMA P-55, 2011, Federal Emergency Management Agency, Washington D.C.Bridge Design Manual LRFD, M 23-50Design: Moorings, Unified Facilities Criteria (UFC) 4-159-03, October 2005,Department of Defense, Washington D.C.Design: Piers and Wharves, UFC 4-152-01, July 28, 2005, Department of Defense,Washington D.C.International Building Code, International Code Council, Washington D.C.General Special Provisions, Washington State Department of Transportation,Olympia, WA.Design Manual M 22-01Plans Preparation Manual M 22-31Private Aids to Navigation, WSF Terminal Engineering LibraryRegion General Special Provisions, WSFGeneral Structural Notes, WSFSafety Management System (SMS) Manual, United States Coast Guard (USCG)Shoreline Master Program (SMP) Handbook, Washington State Department ofEcologyStandard Specifications for Road, Bridge, and Municipal Construction (StandardSpecifications) M 41-10(3)Supporting InformationLife Cycle Cost Model (LCCM), WSFPage 330-4WSF Terminal Design Manual M 3082.05April 2016

Chapter 330BulkheadXTrestleXTransfer Span & ApronXXXGangway/GangplankXXXFixed Pedestrian OHLXMovable Pedestrian OHLXXXXXTerminal Buildings & Toll BoothsXXLadders/Stairs - EmployeeXStairs - PublicXXGuardrail/Railing – EmployeeXXGuardrail/Railing – rativeCode 296-56WSF TerminalDesign Manual [2]InternationalBuilding CodeTerminal StructureAASHTO LRFDMovable BridgeDesign SpecsDesign Specifications MatrixAASHTO LRFDSpecifications[1]330.03MarineAASHTO LRFD Specifications include the following:Guide Specifications for LRFD Seismic Bridge Design, LRFD Bridge Design Specifications,and LRFD Guide Specifications for the Design of Pedestrian Bridges[2]WSF Terminal Design Manual guidelines are intended to supplement design codeswhere applicable.Structural Design Specifications MatrixExhibit 330-3330.04(1)Design ConsiderationsAccessibilityWherever pedestrian facilities are intended to be a part of a transportation facility,28 CFR Part 35 requires that those pedestrian facilities meet ADA guidelines. Federalregulations require that all new construction, reconstruction, or alteration of existingtransportation facilities be designed and constructed to be accessible and useable bythose with disabilities and that existing facilities be retrofitted to be accessible.Additionally, 49 CFR Part 39 prohibits owners and operators of passenger vessels fromdiscriminating against passengers on the basis of disability, requires vessels and relatedfacilities to be accessible, and requires owners and operators of vessels to take steps toaccommodate passengers with disabilities.Design pedestrian facilities to accommodate all types of pedestrians, includingchildren, adults, the elderly, and persons with mobility, sensory, or cognitivedisabilities. Refer to Chapter 300 for accessibility requirements.WSF Terminal Design Manual M 3082.05April 2016Page 330-5

Marine(2)Chapter 330SecurityChapter 310 includes a general discussion of the United States Coast Guard(USCG) three-tiered system of Maritime Security (MARSEC) levels, vessel securityrequirements, and additional information pertaining to marine design. Below are linksto relevant sections by topic. Coordinate with the WSF Company Security Officer(CSO) regarding design issues pertaining to security. In addition, coordinate with theUSCG and Maritime Security for all terminals, the United States Customs and BorderProtection (USCBP) for international terminals, and the Transportation SecurityAdministration (TSA) for Transportation Worker Identification Certification (TWIC)and Sensitive Security Information (SSI). MARSEC Levels: 310.04 Vessel Security: 310.05 Waterside Structures: 310.09 Access Control/Restricted Areas/TWIC: 310.10 Signage: 310.13(3)Environmental ConsiderationsRefer to Chapter 320 for general environmental requirements and design guidance.Refer to the project NEPA/SEPA documentation for project-specific environmentalimpacts and mitigation.(4)Operations and MaintenanceConsult with WSF Operations and Terminal Engineering Maintenance forconsideration of the following operations and maintenance issues: Minimize repair and maintenance required during the design life. Specify paint colors on the darker side to help reduce oxidation process. Provide bird deterrence as necessary Accommodate navigational aids as required Consider construction methods and phasing impacts to vessel andterminal operations. Provide corrosion protection of steel piles as required to achieve the design lifespecified in the Life Cycle Cost Model (LCCM). Accommodate accessibility for repair crews Accommodate inspection access for federal regulationsNote that bird deterrence can include bird wire and bird point systems, but structurescan also be designed so as to not provide nesting opportunities for birds.Additionally, design structures and facilities so that maintenance activities canbe completed in compliance with OSHA/WISHA requirements.Page 330-6WSF Terminal Design Manual M 3082.05April 2016

Chapter 330(5)MarineVessel RestraintWSF has been investigating the development of a vessel restraint system as onemeans of reducing fuel consumption while the vessel is docked and unloading andloading passengers and vehicles. Currently, vessel captains apply significant enginethrust pushing the vessel against the wingwalls and dolphins to ensure the vessel doesnot drift away from these structures. By developing a mechanical means to hold thevessel in position, this thrust can be reduced and significant fuel and cost savingscan be achieved. One system currently under study is a vacuum-based automatedmooring technology.Where vessel restraint has been identified to be a feasible and cost-effective componentof a slip’s infrastructure, incorporate the appropriate system into the berthingaid arrangement.(6)Proprietary ItemsWSF uses competitively acquired products to fulfill the requirements of a contractwherever feasible to help achieve the lowest price, the best quality, and the mostefficient use of resources. There are instances in which competitive bidding maynot or cannot be provided and a specific proprietary product is allowed. Refer toSection 220.07(2) for limitations on the use of proprietary items.(7)Long Lead Time ItemsConsider potential long lead time items for the contractor to procure in both the designand the construction schedules. Many long lead time items will be shop-fabricated andassembled off-site prior to delivery for installation. Include a thorough shop drawingpreparation submittal and review process for these items. Also the requirement ofFederal Funding Partners to buy American-produced steel to meet the Buy Americarequirements per 49 CFR Part 661 for steel products may require additional timedue to the mill rolling schedules of the various domestic steel manufacturers. Thisprocurement process could take anywhere from six to nine months. Other strategies toaccommodate long lead times include advanced purchase, using WSF stock, and delayof the contract to allow for procurement.Typical long lead time items include: Steel pipe piles Precast prestressed concrete piles Precast prestressed concrete deck members Marine fenders UHMW polyethylene rubbing faces Wingwall timbers Hydraulic lift cylinders, pumps and valves for the VTS and OHL systems Sheaves and blocks Hoist motors Steel chains for floating dolphinsWSF Terminal Design Manual M 3082.05April 2016Page 330-7

MarineChapter 330(8)Design LifeDesign life is based on the current Life Cycle Cost Model (LCCM) as required by theWashington State Office of Financial Management (OFM). Refer to Table 1 for thedesign life of new structures (as of 2007) and Table 2 for design life of structures priorto 2007, in the 2010 Life Cycle Cost Model Update (2010 LCCM) for information onwhen existing marine structures and their systems are due for replacement. Confirmdesign lives given below are consistent with the current LCCM. Replacement life maybe reduced due to functional obsolescence. Replacement life of berthing structures alsomay be reduced due to damage from vessel impact.(9)Corrosion MitigationCorrosion is the primary factor in the life span reduction of a structure in the marineenvironment. For those structural components that rely on steel to provide strength,develop a corrosion protection program (including coatings and/or reserve material)to meet their design lives as set forth in the LCCM. Provide a plan for preserving thecorrosion protection system for the design life of the structure. Base design on thefollowing estimated corrosion loss rates for bare steel: Atmospheric zone: 0.004 inch per year Splash zone: 0.006 inch per year Tidal zone: 0.004 inch per year Submerged zone: 0.003 inch per year Other zones: 0.001 inch per yearConsider the site- and structure-specific corrosion protection methods below for usein the design, based on life cycle costs.(a)Reinforced Concrete Shafts and Cast-in-place Concrete Piles Use a minimum 3-inch concrete cover for reinforcing steel. Use standard WSDOT Class 4000P concrete mix. Use epoxy-coated steel reinforcement.(b)Steel Pipe Piles Coat all piles in accordance with the pile coating system specified in the currentWSF Region General Special Provisions covering painting of steel piling.The bottom 20 feet of pile may be uncoated The minimum required design thickness of the piles shall be shown in the ContractPlans for the various corrosion zones listed above. Coatings will be maintained based on the results of required inspections performedevery two years.(c)Steel Framing Coat all steel accordance with the coating system specified in the current WSDOTStandard Specifications as supplemented by the WSF Region General SpecialProvision covering painting of steel.Page 330-8WSF Terminal Design Manual M 3082.05April 2016

Chapter 330(d)MarineCast-in-place and Precast Concrete All cast-in-place superstructure members (including pilecaps) that are notprestressed shall meet the serviceability requirements of Paragraph 5.7.3.4 ofAASHTO LRFD Bridge Design Specifications. Use an exposure factor γe of 0.60. Precast prestressed structures shall be designed for zero net tension for service loadcombinations which include dead load and live load. In non-prestressed concrete, the concrete cover shall be 3 inches for all reinforcingsteel. For prestressing steel in its effective zone, 2 inches of concrete cover isallowed. Prestressing is not fully effective at the end of a beam and therefore thecover should be 3 inches at the end of the beam or panel. Use standard WSDOT concrete mixes. Use epoxy-coated steel reinforcement.(10) Scour and Mudline ElevationsDetermine mudline elevations for structural and geotechnical design from linesoundings and predicted scour over the life of the structure. Consider the effects of pileremoval activities (including clam shelling of timber piles and pile stubs) and scourcoincident with or adjacent to the piles or shafts in establishing the design mudlineelevations for the structures at the start and end of their design life. Consider theeffects of changing design mudline elevations on the performance of the structures(in terms of strength and displacement) over their design life. In general, when clamshelling occurs at the location of new piles, discount the top five feet of soil based onthe assumption it is disturbed. Scour is caused by ferry vessel propeller wash and tidalcurrents. The estimated scour depths are a function of soil properties and past scourat the locations of the structures. The pile removal activities and scour effects are notadditive (i.e., when clam shelling and scour both occur, use the maximum discountedsoil depth). If a more accurate analysis of scour is warranted the WSF Maintenancegroup has annual records at all slips available for review.Consult the WSDOT Geotechnical Branch to review these guidelines and to determinewhether less or more soil should be discounted based on the soils at the location of thestructure under consideration.(11) Geotechnical RequirementsDesign geotechnical elements in accordance with the Geotechnical Recommendationsprovided by the WSDOT Geotechnical Branch. The Geotechnical Recommendationswill typically include: Site-specific seismic design Liquefaction and lateral spreading– Slope stability– Downdrag forces– Axial capacity of foundation elements– Input data for L-Pile lateral analysis– Group reduction factors due to pile spacing– Lateral forces for bulkhead design– Constructability recommendations including type and capacity of pile drivingequipment and use of cutting shoes.WSF Terminal Design Manual M 3082.05April 2016Page 330-9

MarineChapter 330(12) Materials SpecificationUtilize materials that are in accordance with the requirements of the WSDOTStandard Specifications and WSF General Structural Notes and Region GeneralSpecial Provisions.Make use of WSF stockpiles of materials where possible; however Buy America andBuy American requirements need to be addressed before approval to use stockpiledmaterials is allowed. Early consultation with HQ Design ASDE is recommended. Stateforce labor limits also apply (refer to RCW 47.28.030 for more information).For material requirements of federally funded projects including the requirement forAmerican-made steel refer to 49 CFR Part 661. See Section 220.07(3) Buy Americaand Buy American, for additional information.(13) Miscellaneous ConsiderationsUse standard WSF structures where appropriate.(14) Right of Way and Sundry Site PlansRight of Way Plans are the official state documents used as the basis to acquire realestate and other property rights for roadways. It is the responsibility of the regionto prepare plans for the acquisition of rights of way (R/W), including easements,permits, and any substantiating documentation necessary for completion of the plans.Verification of ownership of existing R/W is also required.A Sundry Site Plan is used to map property that cannot be shown on a Right of WayPlan such as ferry terminals, wetlands mitigation sites, park and ride lots, stockpilesites, and stormwater retention or other reclamation sites.Both Right of Way Plans and Sundry Site Plans convey legal information regardingproperty boundaries. Right of Way Plans are typically based on roadway alignmentswhereas Sundry Site Plans are not based on roadway alignments. When the boundariesof an existing ferry terminal are modified, the corresponding Right of Way Plans andSundry Site Plans must also be modified. The Sundry Site Plan contains all terminalproperty information with the exception of property on highway right of way. Referto the WSDOT Plans Preparation Manual for additional information regarding Rightof Way and Sundry Site Plans. To obtain title reports or determine if any acquisition,easements, leases or right of entry agreements may be needed for the project, contactthe WSDOT regional or headquarters Real Estate group.WSDOT has decision authority on state right of way in unincorporated areas andwithin cities below a specified population as set forth in the WSDOT Design Manual.WSDOT also maintains decision authority in limited access areas. Obtain approvalthrough the local WSDOT region and the HQ Right of Way Office for modificationsto state right of way in unincorporated areas. Coordinate with both WSDOT and thelocal jurisdiction for improvements and any associated permit requirements withinincorporated areas.(15) DNR Leased PropertyWSF leases offshore state-owned land through the Washington State Department ofNatural Resources (DNR) at several existing terminals. A DNR authorization to usestate-owned aquatic lands is required if projects will occur on or over state-ownedPage 330-10WSF Terminal Design Manual M 3082.05April 2016

Chapter 330Marineaquatic lands. The use of this land is through a DNR authorization that serves asa legal contract that outlines the terms and conditions of use and conveys certainproperty rights to the user (WSF) in exchange for rent. WSF/WSDOT is responsiblefor contacting the DNR early in the design process to determine any requirements forattaining or altering existing leases. Coordinate with the WSDOT Right of Way Branchon issues regarding DNR leased property.330.05(1)VesselsDesign i TabilIHiyuEvergreenStateIBremertonIssaquah 100/Issaquah 124Bainbridge IslandOlympicAnacortesSuperJumboTerminalJumbo Mark IIExhibit 330-4 provides a summary of the design vessels for each of the WSF ferryterminals. Design vessels are broken out into two categories. Use Category I includes vessels that will typically use the terminal. These vesselswill be used during all operating conditions and will be moored overnight atterminals that have mooring facilities. Use Category II includes vessels that will be utilized as substitutes for Category Ivessels during planned maintenance activities. Vessels will be infrequently mooredovernight at terminals that have mooring ilteoIIIIIIOrcasIIIIIIIIIIIIIFauntleroyFriday HarborKingstonIIIIPoint DefianceIIIIPort IIVashonIIIIIIIIIIIIIDesign VesselsExhibit 330-4WSF Terminal Design Manual M 3082.05April 2016Page 330-11

Marine(2)Chapter 330Vessel ParticularsRefer to Appendix O and Exhibit 330-6 for design vessel particulars. Designparticulars are the dimensional, capacity and other properties of the design vessel,especially those that are required for the design of the facilities and structures thevessel uses. These include the vessel’s displacement, length, beam, draft, freeboard,passenger capacity and vehicle capacity. The displacement is a function of the vessel’sweight, the capacities of its fuel and water tanks as well as its passenger and vehiclecapacities. While the vessel’s length and beam are independent of the displacement,the draft is directly proportional and the freeboard is inversely proportional to thedisplacement. The vessel’s draft is critical to the design of a slip to ensure adequateclearance between the vessel’s keel and engines and the slip’s mudline. The freeboardis a primary factor in the design of tide-dependent structures such as the vehicletransfer span, overhead loading, and tie-up slip gangplank systems as well as thewingwall and dolphin rubfaces.Some particulars will vary as a result of the different levels of loading a vessel issubject to. The most common condition used for design is termed the OperationalVessel (or Heavy Vessel) which is defined as tanks at full capacity and the full capacityof vehicles and passengers for which the vessel is designed and licensed. However,a vessel will frequently be empty of vehicles and passengers and have either fullor partially full tanks. This condition is termed the Lay-up Vessel and results inthe highest freeboard which, when coupled with the highest design tide, gives themaximum vessel deck elevation. The following table Exhibit 330-5 illustrates the twoloading conditions and their uses in the design of terminal facilities. Operations staffwill provide guidance as to which loading condition(s) are to be used for the design ofparticular facilities.Loading ConditionDefinitionDesign ElementsOperational VesselFull TanksFull Passenger LoadFull Vehicle LoadOperating Slip Landing Aid Design EnergyLow Tide Operational RangeOperating Slip Mudline ElevationLay-up VesselHalf-full or Full TanksNo PassengersNo VehiclesTie-up Slip Landing Aid Design EnergyHigh Tide Operational RangeTie-up Slip Mudline ElevationNight Tie-up Mooring RangeVessel ConditionsExhibit 330-5Page 330-12WSF Terminal Design Manual M 3082.05April 2016

Chapter 330MarineVessel DiagramsExhibit 330-6WSF Terminal Design Manual M 3082.05April 2016Page 330-13

Marine(3)Chapter 330Vessel uckXXXPier -outXPotableWaterSolid WasteExhibit 330-7 identifies the type of vessel utilities provided at each WSF terminal.Refer to utility criteria below for utilities to be provided. See Chapter 560 Site Utilitiesfor additional information.AnacortesXXBainbridge IslandTerminalCoupevilleEdmondsXXXXXPier 15FauntleroyXXXXXTruckFriday HarborXXXXXTruckKingstonXXXPier 15XXN/A*XXTruckXXN/A*LopezMukilteoXXXOrcasPoint DefianceXXXXXTruckPort TownsendXXXXXTruckSeattleXXXXXPier uckXXTruck*No fueling takes place at terminal. Vessels are fueled by truck in Anacortes or FridayHarbor.WSF Ferry Terminal Vessel UtilitiesExhibit 330-7(a)Potable WaterProvide one domestic water line per slip for filling freshwater tanks. Most vesselfreshwater systems utilize 4-inch pipe. Size the shore-side freshwater fill piping to beconsistent with the terminal service piping, usually 1½-inch or 2-inch. The vesselswill be provided with the necessary fittings to connect to the size provided on thetransfer span. Connect to the municipal system. See Section 560.04 Potable Water foradditional information.Incorporate in each transfer span domestic water line a backflow preventer in a heatedenclosure or room near the transfer span hinge line. As an alternative, the backflowpreventer may be protected from freezing with heat tape and insulation.Page 330-14WSF Terminal Design Manual M 3082.05April 2016

Chapter 330(b)MarineSewer Pump-outProvide one 4-inch sewer pump out per slip. Connect to municipal system. Verifydischarge rate with respect to the existing system capacity with local sewer district.See also Section 560.04 Sanitary Sewer for additional information.(c)Solid WasteConsider combining vessel solid waste collection area with terminal building garbagecollection area. Provide vehicular service access to the collection area(s).(d)Shore PowerProvide one 200-amp, 480-volt service connection per slip. Terminals designed forJumbo and Jumbo Mark II design vessels require two 200-amp, 480-volt serviceconnections per slip. See Section 560.09 Site Power for additional information.(e)Shore Power BackfeedProvide one vessel shore powerbackfeed per slip.(f)FuelVessel fueling is either via truckdelivery or takes place at Pier 15off of Harbor Island. All of theisland terminal vessels are fueled inAnacortes with the exception of theinter-island vessel which is fueledvia truck at Friday Harbor. Referto the USCG Safety ManagementSystem (SMS) procedures for vesselfueling requirements. Containmentbooms are required where fuelingoperations occur.(4)Vessel Routes and TerminalLocationsExhibit 330-8 identifies the existingWSF ferry system routes andcorresponding terminal locations.Appendix P and Appendix Q containadditional route and terminalreference data.WSF Ferry System Routesand Terminal LocationsExhibit 330-8WSF Terminal Design Manual M 3082.05April 2016Page 330-15

Marine(5)Chapter 330Vessel Security and Safety ZonesPer 33 CFR Part 165.1317, “there is established a large passenger vessel security andsafety zone extending for a 500-yard radius around all large passenger vessels locatedin the navigable waters of the United States in Puget Sound, WA, east of 123 30' WestLongitude. [Datum: NAD 1983].” Consider requirements of the moving security zone,established by Captain of the Port Puget Sound, as follows: Vessels within 500 yards must operate at minimum speed necessary to maintainsafe course and respond to directions of the WSF Watch Officer or on-scene officialpatrol officer. Vessels and persons are prohibited from approaching within 100 yards (underway)unless authorized by WSF or the on-scene patrol officer. Vessels and persons are prohibited from approaching within 25 yards of any WSFvessel docked at a terminal, without authorization.330.06(1)Tidal InformationTerminal Tidal DatumsThe general arrangement of terminal tidal datums is illustrated in Exhibit 330-9. Tidaldatums are tabulated in Exhibit 330-10. The North American Vertical Datum of 1988(NAVD 88) datums were determined from a survey of the terminals by the WSDOTGeoMetrix Geodetic Survey Office. Mean High Water (MHW) and Mean Higher HighWater (MHHW) were calculated using VDatum 3.2 software provided by the NationalOceanic and Atmospheric Administration (NOAA). Elevations for NAVD 88, MHW,and MHHW are given with respect to the datum MLLW 0.00 feet. Coordinates usedto determine datums correspond to each terminal’s main slip bridge seat as tabulated inExhibit 340-3. See Appendix X for additional information.Page 330-16WSF Terminal Design Manual M 3082.05April 2016

Chapter 330Marine(Values are from Anacortes Ferry Terminal. For values at other terminals see Exhibits 330-11, 330-12, and 340-3)General Arrangement of Terminal Tidal Datums,Design Water Levels and Vertical Project DatumExhibit 330-9WSF Terminal Design Manual M 3082.05April 2016Page 330-17

MarineChapter 330Datums:MHHW: Mean Higher High WaterMHW: Mean High WaterNAVD 88: North American Vertical Datum of 1988MLLW: Mean Lower Low WaterMLLW tes0.000.557.318.05Bainbridge 11.55Friday 0.000.587.117.88Point Defiance0.002.4911.0611.94Port rminalTerminal Tidal DatumsExhibit 330-10Page 330-18WSF Terminal Design Manual M 3082.05April 2016

Chapter 330(2)MarineDesign Tidal RangesDesign tidal ranges are tabulated in Exhibit 330-11. They were developed usingNOAA-verified tide data from the past 17 years. The use of verified tide data meansthat the effects of storm surge, atmospheric pressure and other weather effects areincluded with the predicted astronomical effects.Maximum Design Water Levels include a medium estimate of Sea Level Rise (SLR) of13 inches and are intended for all structures including those with 50 and 75-year designlives. Structures with 50-year design lives include berthing structures (wingwalls anddolphins). Structures with 75-year design lives include vehic

MARSEC Levels: 310.04 Vessel Security: 310.05 Waterside Structures: 310.09 Access Control/Restricted Areas/TWIC: 310.10 Signage: 310.13 (3) Environmental Considerations Refer to Chapter 320 for general environmental requirements and design guidance. Refer to the project N

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