prefabricated truss bridges combined v2[1] · – prefabricated bolted vehicular trussprefabricated...
TRANSCRIPT
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Prefabricated�Trusses�
Tom�Willetts
Dennis GonanoDennis��Gonano
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IntroductionIntroduction
Two�Revised�Specifications:
– Prefabricated�Pedestrian�— Bicycle�SuperstructureI 564 80 0016Item�564.80nn0016
– Prefabricated Bolted Vehicular Truss System– Prefabricated�Bolted�Vehicular�Truss�SystemItem�564.81nn0016
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Why the RevisionsWhy�the�Revisions�
• Clearly�Define�the�Requirements�and�the�y qRoles/Responsibilities�for:o Design
lo Detailingo Materialso Fabricatingo Fabricatingo Installation
• Gain Consistency Between:• Gain�Consistency�Between:o Locally�Let�Projectso State�Let�Projects
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Prefabricated�Bolted�Vehicular�Truss�S tSystem
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Prefabricated�Bolted�Vehicular�Truss�System
• Prefabricated�Vehicular�Trusses�are�designed�in�accordance�with�NYSDOT�Policies,�Standards�and�Specifications�by:
– Owner’s�Engineer– Contractor’s�Engineer
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Prefabricated�Bolted�Vehicular�Truss�System
• The Owner’s Engineer is Responsible for:The�Owner s�Engineer�is�Responsible�for:
– Size,�Type�and�Location– Substructures– Substructures– Bearings– Bridge�Deck�and�Deck�Joints– Barrier,�Railing�and�Pedestrian�Fencing
• The�Contractor’s�Engineer�is�Responsible�for:g p
– Trusses– FloorbeamsFloorbeams– Stringers
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Prefabricated�Bolted�Vehicular�Truss�System
• All�Components�SHALL be�designed�by�a�NYS�Licensed�Engineer�in�p g y gAccordance�with�New�York�State�Policies�Standards�and�Specifications
• Design Live Load SHALL be the current AASHTO HL93 Vehicle and• Design�Live�Load�SHALL be�the�current�AASHTO�– HL93�Vehicle,�and�NYSDOT�Permit�Vehicle�(when�applicable)
• All�truss�and�floor�system�members�SHALL be�fabricated�from:�yrolled�shapes�or�built�up�welded�sections
• Structural�tubing�is�not�allowed
• All�connections�for�the�truss,�stringers,�floor�beams,�cross�bracing�and�other�structural�members�SHALL be�made�through�the�use�of�high strength boltshigh�strength�bolts
• Welded�connections�are�not�allowed
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Prefabricated�Bolted�Vehicular�Truss�System
• Bearings�SHALL be:Elastomeric ( f d)– Elastomeric�(preferred)
– Multi�Rotational
• Steel�Sliding�and�Cotton�Duck�bearings�are�not�allowedg g
• Allowable�decks�types�include:– Cast�in�place�or�Precast�Concrete– Steel�Grating– Wood
• Allowable finishes include:• Allowable�finishes�include:– Weathering– PaintedG l i d– Galvanized
– Thermal�Sprayed�Metal�Coatings
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Prefabricated�Pedestrian�Bicycle�Superstructure
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Prefabricated�Pedestrian�– BicycleS t tSuperstructure
• The Owner’s Engineer is Responsible for:The�Owner s�Engineer�is�Responsible�for:
– Size,�Type�and�Location– Substructures– Substructures
• The�Contractor’s�Engineer�is�Responsible�for:
– Trusses– Floorbeams– Stringers– Bearings– Bridge Deck and Deck JointsBridge�Deck�and�Deck�Joints– Barrier,�Railing�and�Pedestrian�Fencing
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Prefabricated Pedestrian – Bicycle SystemPrefabricated�Pedestrian� Bicycle���System
• All�Components�SHALL be�designed�by�a�NYS�Licensed�Engineer�in�p g y gaccordance�with�New�York�State�Policies�Standards�and�Specifications
• Designed�for�the�Occasional�Maintenance�Vehicle�either�a�H�5�or�H�10�Vehicle�depending�on�the�clear�width
• Truss�Members�can�be�Fabricated�from:– Structural�Tubing– Rolled�Shapesp– Welded�Built�up�Shapes
• Connections�can�be�Welded�or�made�through�the�use�of�High�Strength�Bolts
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Prefabricated�Pedestrian�– Bicycle�Superstructure
• Bearings�can�be:l ( )– Elastomeric�(preferred)
– Steel�Sliding– Multi�Rotational
• Allowable�decks�types�include:– Cast�in�place�or�Precast�Concrete– Wood– Composite
• Allowable�finishes�include:– Weathering– Painted– Galvanized– Thermal�Sprayed�Metal�Coatings
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Just a few peopleJust�a�few�people
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Contract������������������������������������lPlans
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ContractlPlans
• Updates�to�the�NYSDOT�Bridge�Manual�will�include�guidance�for�the�p g gdesign�and�detailing�of�prefabricated�trusses.�In�the�interim,�plans�should�include:
Truss Configuration:– Truss�Configuration:» Common�types�are:�Warren,�Pratt,�Bowstring�or�Howe» Overhead/Portal�Bracing�shall�be�shown�if�required�or�desireddesired
– Span�Length– Clear�WidthDeck Type:– Deck�Type:
» Cast�in�place/Precast�Concrete» Steel�Grating» Timber» Timber�
– Barrier/Railing�Type�&�Configuration– Truss�Accessories:�Bollards,�Lighting,�Signing,�etc.
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Contract������������������������������������lPlans
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Contract PlansContract Plans
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QualityAssurance�
• New�“Quality�Assurance�Guidelines”�to�be�issued,�and�included�in�“Procedures�for�Locally�Administered�Federal��Aid�Projects”manual
Q li A l b h h d i d f b i i• Quality�Assurance�relates�to�both�the�design�and�fabrication
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QualityAssurance
• All�prefabricated�trusses�regardless�of�the�system�they�are�on�p g y yor�over�shall�conform�to�NYSDOT�Policies,�Procedures,�Standards�and�Specifications
• All�“Prefabricated�Pedestrian�Trusses�over�the�National�Highway�System�(NHS)�or�a�State�Highway�SHALL be�g y y ( ) g ydesignated�“Unique�and�Unusual”
• All�“Prefabricated�Vehicular�Trusses”�SHALL be�designated�as�“Unique�and�Unusual”
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QualityAssurance
• State�Let�Projects
• Locally�Let�Projects�over�the�NHS�or�State�Highway
• Locally�Let�Projects�not�over�the�NHS�or�a�State�Highway:
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Design�Quality�Assurance
• Design�QA�for�State�Let�Projects�and�Locally�Let�Projects�over�the�NHS�or�State�Highway:
Office of Structures’, Project Development Unit performs a “TechnicalOffice�of�Structures ,�Project�Development�Unit�performs�a� Technical�Progress�Review”�of�the�project�in�accordance�with�the�NYSDOT�Bridge�Manual,�Chapter�20,�Quality.�This�includes�the�review�of�the�following�documents:
Design�ReportPreliminary�PlanADP’sPS&E�
Office�of�Structures’�Metals�Engineering�Unit�(MEU)�will�review�the�Fabricator’s�design�for�compliance�with�NYSDOT’s�Standards�and�Specifications
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Design�QualityAssurance
• Design�QA�for�Locally�Let�Projects�not over�the�National�Highway�System�or�a�State�Highway:
– Sponsor�assumes�the�responsibility�for�the�Quality�Assurance of the designAssurance�of�the�design
– Sponsor�shall�provide�an�equivalent�level�of�reviews�and�approvals as required by the NYSDOT Bridge Manual andapprovals�as�required�by�the�NYSDOT�Bridge�Manual� and�the� NYSDOT�Standard�Specifications;�Construction�and�Materials
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Fabrication�QualityAssurance
• Fabrication�QA�for�State�Let�Projects,�and�Locally�Let�Projects�over�the�NHS�or�over�the�State�System:
Office�of�Structures’�Metals�Engineering�Unit�(MEU)�provides�Fabrication�Quality�Assurance�(including�Shop�Drawing�Review�and�Shop�Inspection)�in�accordance�with�the�NYSDOT�Steel�Construction�Manual.
Sponsor�assumes�the�responsibility�for�the�Construction�Inspection�for�Locally�Let�projects
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Fabrication�QualityAssurance
• Fabrication QA for Locally Let Projects not over the NationalFabrication�QA�for�Locally�Let�Projects�not over�the�National�Highway�System�or�a�State�Highway:
Sponsor assumes�the�responsibility�for�the�Quality�Assurance�of�the�fabrication�inspection�and�construction�inspection�of�the�structure
Sponsor shall provide an equivalent level of reviews approvals andSponsor shall�provide�an�equivalent�level�of�reviews,�approvals�and�inspections�as�required�by�the�NYSDOT�Bridge�Manual,�the�NYSDOT�Standard�Specifications;�Construction�and�Materials and�the�NYSDOT�Steel�Construction ManualConstruction�Manual
Sponsor�shall�include�a�Steel�Plant�Quality�Assurance�Plan�in�the�project’s�Construction�Management�Plan.�
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QualityAAssurance
• Minimum�requirements�for�the�Steel�Plant�Quality�Assurance�q Q yPlan�include:
– Minimum�number�of�inspection�hours�per�weekp p– Inspector�must�be�an�AWS�Certified�Welding�Inspector– Nondestructive�evaluation�in�accordance�with�ASNT�TC�1AThe following will be inspected:– The�following�will�be�inspected:
� Review�shop�drawings� Raw�materials�inspection� Cutting and grinding of steel� Cutting�and�grinding�of�steel� Dimensions,�fit�up�and�bolting� Any�coatings� Pre erection loading shipping and final acceptance� Pre�erection,�loading�shipping�and�final�acceptance
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QualityAAssurance
• Minimum�requirements�continued:q
– Inspector�shall�provide�weekly�reports�to�the�Sponsor�or�their�representativerepresentative
– The�Sponsor�or�their�representative�shall�be�notified�immediately�in�the�event�of�any�non�conformance�in�materials�or�workmanship
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QualityAAssurance
• The�Sponsor,�through�the�RLPL,�may�request�QA�Reviews�and/or�Fabrication�QA�from�the�Office�of�Structures
• The�request�must�be�early�in�the�project�development�process
• The�request�must�be�approved�by�the�Deputy�Chief�Engineer�(Structures)( )
• Please�Note:�
Approval�will�be�on�a�case�by�case�basisand�is�not�guaranteed
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QualityAssurance
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QualityAssurance
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Quality�Assurance
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Prefabricated Trusses Part IIPrefabricated�Trusses�Part�II
New York Local Roads 2014
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Recent�USB/NY�ProjectsYear Project�(Route�&�Feature�X’d) Location Span�x�Rdwy/Skew/Load/Deck/Rail Contract�Specifier
2011 CR2�over�Schoharie�Creek Lexington,�NY�(Greene�Co.) 142’x22’/0d/HL93/pc+top/2ST�Curb CME
2011 Otis�Lane�over Boquet River Essex�County,�NY 88’x14’/0d/HL93/timber/2ST�Truss ECDPW
2012 High�Meadow�Way�Bridge Town�of�Keene,�NY 60’x14’/0d/HS20/timber/Wbeam�Truss Private�Owner
2013 Bush Rd�over�Schoharie�Creek Lexington,�NY�(Greene�Co.) 129’x13.17’/0d/HL93/conc/2ST�Curb CME
2013 CR61�over�the�Batten�Kill Washington�County,�NY 120’x28’/11.5d/HL93+P/conc/4ST�SS�Plate�Curb Foit�Albert
2013 CR47�over�Kaaterskill Creek Catskill,�NY�(Greene�Co.) 114’x22’/0d/HL93/conc/2ST�Curb CME
2014 N.�Youngman�Comm.�Ctr.�Bridge Tonawanda,�NY�(Erie�Co.) 100’x32’/0d/HL93+P/conc/2ST�Curb LiRo Engineers
2014 Albany�Turnpike over�CSX�RR Chatham,�NY�(Columbia�Co.) 114’x14’/60d/HL93+P/conc/2ST�Curb Bergmann
2013 CR11C�over�Susquehanna River Otsego�County,�NY 150’x24’/0d/HL93/conc/2ST�Curb Shumaker�Consult
2014 Grant�Hill�Rd�over�Normans Kill� Guilderland,�NY�(Albany�Co.) 146’x26’/0d/HL93+P/conc/4ST�Curb Foit�Albert
2014 C.C.�Camp�Road�over�Catskill�Cr. Broome,�NY�(Schoharie�Co.) 100’x18’/0d/HL93/conc/2ST�Flush Foit�Albert
2014 Wynkoop Lane�over�Esopus Cr. Hurley,�NY (Ulster�Co.) 163.33’x25’+5’sw/0d/HL93/pc+top/2ST�Truss UCDPW
2014 Carr�Road�over�Schoharie Cr. Jewett,�NY�(Greene�Co.) 113’x22’/0d/HL93/conc/2ST�Curb Barton &�Loguidice, ( ) / / / / g
2014 Grove�Rd.�o’r E.B.�Ausable River Jay,�NY�(Essex�County) 120’x20’+5’sw/0d/HL93/2ST�Flush Schoder Rivers
New York Local Roads 2014
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TopicsTopics
• CollaborationCollaboration• Project�selection
j C• Project�Contract�Documents– Specifications�&�Design�Topics
• Fabrication�process• Construction• Project�profiles
New York Local Roads 2014
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Deferred�Superstructure�Design/BuildDesign�Bid�Build
Needs�&�Budget�
Determined
Construct/��Build�Phase
PreliminaryDeterminedSuperstructureEngineering
PreliminaryEngineering
Sponsor,�Scope�&�Programming
Advertise/�Bid/Letting�PhasePhase
Plan/Study/�Estimate
Design�PhaseSubstructure &
Foundations Engineering
New York Local Roads 2014
Foundations EngineeringFinal Engineering
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CollaborationCollaboration
• Feasibility�Assessmentsy• Programming�Costs• Specifications�&�Schematic�Details• Preliminary�Engineering• Modeling�&�Rendering• Hard�Bid�Quotes�&�Information• Engineering�of�Record�(EOR)�Design�&�Plan SubmittalsPlan�Submittals
• On�Site�Installation�Assistance
New York Local Roads 2014
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Project Selection
Through�Girder�System
Project�Selection
Sh ll d•Long.�Span�/�Trans.�Span•Framed�members•Shallow�floor�beams�•Reduces site impacts Hi h C i /W i h R i
Shallow�and
•Reduces�site�impacts•More�opening
High�Capacity/Weight�Ratio
•Simpler�shipments•Less�trucking�permits•Field assembly•Field�assembly•Lighter�crane�picks•More�competition Attractive�Infrastructure
•Obvious�form�and�function•Connection�to�the�past•Familiarity�and�way�finding•Modern�but�in�a�replica�form•Aesthetic�finishes�and�Attractive Clear Spans
New York Local Roads 2014
enhancementsAttractive�Clear�Spans
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Project�Selection�� Ideal�SuitabilityProject�Selection� Ideal�Suitability
• Low�volume�rural�highways�or�city�streets.g y y• Facilities�with�three�traveled�lanes�or�less.• Spans�between�100�ft.�to�175�ft.�for�low�trusses�(pony).• Spans�between�160�ft.�to�275�ft.�for�high�trusses�(through).• When�the�superstructure�depth,�combined�with�profile�grade�parameters greatly impact the project footprintparameters,�greatly�impact�the�project�footprint.
• When�piers�are�not�desired.• When prefabrication can save time in constructionWhen�prefabrication�can�save�time�in�construction.• Where�site�staging�is�limited�…�or�delivery�access�is�difficult.• Where�visibility�or�aesthetics�are�important.
New York Local Roads 2014
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Project�Contract�DocumentsProject�Contract�Documents• Loads• Reactions• Important�Details
– Slab�construction– Edge�of�bridge�construction– End�of�bridge�construction– Bearingsg
• Specifications
New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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New York Local Roads 2014
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CR47 (Ca terskill Road) o er Kaaterskill Creek Greene Co nt NYCR47 (Cauterskill Road) over Kaaterskill Creek, Greene County, NY
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New York Local Roads 2014
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New York Local Roads 2014
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W nkoop Lane o er Esop s Creek H rle NY (Ulster Co nt )Wynkoop Lane over Esopus Creek, Hurley, NY (Ulster County)
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Fabrication�ProcessFabrication�Process• Schedules
l d• Material�ordering• Shape�processing• Plate�processing• Steel conditioningSteel�conditioning• Corrosion�protectionA bl & h ki• Assembly�&�Match�Marking
• Material�Records�Certification
New York Local Roads 2014
• Shipping
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Fabrication ProcessFabrication�Process
New York Local Roads 2014
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ConstructionConstruction• As�built�(fabricated)�plans�&�BOM’s
f bl d• Receipt�of�assemblies�and�pieces• Staging�area• Unloading�plan• Cranes & rigging planCranes�&�rigging�plan• Erection�sequence
k i• Deck�construction• Sidewalks,�utilities�&�railings
New York Local Roads 2014
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Erecting�Sequences�for�Steel�Truss�BridgesDescription Min.�Cranes� &�
Relative�SizeShored or�Aerial�Splices
Additional�Span�Construction
Special�Accessories
1 Girder�by�Girder�1�(full�length) 1�Medium�Crane
2 Girder�by�Girder�2�(partial�length) 1�Smaller�Crane Shored Cribbing,�Shoring,���&�y (p g ) g gJacks
3 Girder�by�Girder�3�(partial�length) 2�Smaller�Cranes Aerial
4 Segment�by�Segment�1�(girder) 1�Small�Crane Shored Cribbing,�Shoring,���&�Jacks
5 Segment�by�Segment�2�(full�width) 1�Medium Crane Shored Cribbing,�Shoring,���&�Jacks
6 Full�Width,�Full�Length�(whole�bridge) 1�Large�Crane
7 Part�Full,�Part�Half�Width�1 1�Medium Crane Shored Cribbing,�Shoring,���&�Jacks
8 Part�Full,�Part�Half�Width�2 2�Large�Cranes Aerial
9 Launch with�Temporary�Nose None Launching Nose Cribs,�Rollers,�Counter�Wts,�Jacks�&�Push/Pull
10 Launch with�Temporary�Back�Span None Back�Span Cribs,�Rollers,�Counter�Wts,�Jacks�&�Push/Pull
11 Launch with�Crane�Assist�(nose) 1�Crane* Launching Nose Cribs,�Rollers,�Counter�Wts,�Jacks�&�Push/Pull
12 Launch with�Crane�Assist�(back�span) 1�Crane* Back�Span Cribs,�Rollers,�Counter�Wts,�Jacks�&�Push/Pull/
New York Local Roads 2014
* Actual crane size(s) will depend on largest segment lift and crane position
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ConstructionConstruction
New York Local Roads 2014
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P R O J E C T P R O F I L E Owner: CSX RailwayRoute: Albany TurnpikeCrossing: CSX Railwayg yContract Docs: Bergmann AssociatesContractor: CP Ward Const., Inc.Style: Cambridge Flat (Warren)Floor Framing: RaisedSpan: 113 ft 8 in (avg )Span: 113 ft. – 8 in. (avg.)Width: 14 ft. & 4 ft. SidewalkSkew: 61o (avg.) Left Forward (LF)Struct. Depth: 28 1/2 in.Field Sections: 3 per TrussFinish: Hot dip galvanizedField Connect: Bolted Splices & FramingShop Connect: Bolted TrussFloor/Deck: RC Slab on Exoderm. GridRailing: W-Beam to TrussRailing: W Beam to TrussYear Built: 2013Special Features: Exodermic Deck; External
Sidewalk; Exist. Abutments;Varied Left & Right Span L hLengths
Albany Turnpike, East Chatham, NY
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P R O J E C T P R O F I L E Owner: Greene Co., NYRoute: County Route 2Contract Docs: Creighton Manning Eng.g g gContractor: Arch Bridge ContractingStyle: Cambridge (Mod. Warren)Floor Framing: RaisedConnections: BoltedSpan: 142 ftSpan: 142 ft. Width: 22 ft.Skew: n/aStruct. Depth: 32.6 in.Field Sections: 3 per TrussFinish: GalvanizedFloor/Deck: Composite P/C SlabRailing: TST on Raised CurbYear Built: 2011Special Features: Post-tensioned concrete deckSpecial Features: Post tensioned concrete deck
and approach slabs; jointless expansion joint
County Route 2 over Schoharie Creek, Greene County, NY
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P R O J E C T P R O F I L E Owner: Greene County, NYRoute: Bush RoadContract Docs: Creighton Manning Eng.g g gContractor: ING CivilStyle: Cambridge (Mod. Warren)Floor Framing: FramedConnections: Bolted Truss & FramingS a : 129 ftSpan: 129 ft.Width: 13 ft. - 2 in.Skew: n/aStruct. Depth: 21.7 in.Field Sections: 5 per TrussFinish: Hot-dip GalvanizingFloor/Deck: Conc. Slab on SIP FormsRailing: NYSDOT 2-Tube on CurbSpecial Features: Plate Bottom Chord Members
Bush Rd over Schoharie Creek, Lexington, NY (Greene Co.)
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P R O J E C T P R O F I L E Owner: Greene County, NYRoute: Cauterskill Road (CR47)Contract Docs: Creighton Manning Eng.g g gContractor: J.C. Smith, Inc.Style: Cambridge (Mod. Warren)Floor Framing: FramedConnections: Bolted Truss & FramingS a : 114 ftSpan: 114 ft.Width: 21 ft. - 2 in.Skew: n/aStruct. Depth: 30.3 in.Field Sections: 3 per TrussFinish: Hot-dip GalvanizingFloor/Deck: Conc. Slab on SIP FormsRailing: NYSDOT 2-Tube on CurbSpecial Features:
Cauterskill Road (CR47) over Kaaterskill Creek, Catskill, NY (Greene Co.)
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P R O J E C T P R O F I L E Owner: Washington County, NYRoute: County Route 61Contract Docs: Foit-Albert AssociatesContractor: Jersen Construction GroupStyle: Cambridge (Mod. Warren)Floor Framing: FramedConnections: Bolted Truss & FramingS a : 120 ftSpan: 120 ft.Width: 28 ft. - 0 in.Skew: n/aStruct. Depth: 43.5 in.Field Sections: 3 per TrussFinish: Hot-dip GalvanizingFloor/Deck: Conc. Slab on SIP FormsRailing: NYSDOT 4-Tube on SlabSpecial Features: stainless steel plate curbs on
neoprene gasketsneoprene gaskets
CR61 (Buffum’s Bridge), Towns of Salem & Jackson, NY (Washington County)
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P R O J E C T P R O F I L E Owner: Otsego County, NYRoute: CR11 CContract Docs: Shumaker ConsultinggContractor: ING CivilStyle: Cambridge (Mod. Warren)Floor Framing: FramedConnections: Bolted Truss & FramingS a : 150 ftSpan: 150 ft.Width: 24 ft. - 0 in.Skew: n/aStruct. Depth: 36.9 in.Field Sections: 4 per TrussFinish: Weathering SteelFloor/Deck: Conc. Slab on SIP FormsRailing: NYSDOT 2-Tube on CurbSpecial Features: Aerial Splice Method;
Continuous Edge FormsContinuous Edge Forms
CR11C over the Susquehanna River, Otsego County, NY
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P R O J E C T P R O F I L E Owner: Ulster County, NYRoute: Wynkoop LaneContract Docs: Ulster County Engineery gContractor: Ulster County Public WorksStyle: Cambridge (Mod. Warren)Floor Framing: FramedConnections: Bolted Truss & FramingS 163 ft 4 iSpan: 163 ft. - 4 in.Width: 24 ft. - 0 in.Sidewalk: 5 ft. - 0 in. OutboardSkew: n/aStruct. Depth: 37.5 in.Field Sections: 4 per TrussFinish: Hot-dip GalvanizingFloor/Deck: p/c Slab with asph. overlayRailing: Truss Mounted 2-TubeSpecial Features: Precast Deck Slab PanelsSpecial Features: Precast Deck Slab Panels
Wynkoop Lane (Hurley Bridge) over Esopus Creek, Ulster County, NY
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Industry TrendsIndustry�Trends
• SSSBA’s eSpan140 • Press Break GirdersSSSBA s�eSpan140• MGS�Bridge�Rail
Press�Break�Girders�– Testing�at�WVU�Struct.�Lab.– Dillon�Avenue�South�Buchanan Co IABuchanan�Co.,�IA
MGS Bridge
Jessup Street South Buchanan
Co., IA
New York Local Roads 2014
MGS BridgeRailing
,
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On�Going ResearchOn Going�Research
• Crash Testing of Steel� • Redundancy StudiesCrash�Testing�of�Steelto�Steel�Supported�Bridge�Railings
Redundancy�Studies– Phase�I�– WVU– Phase�II�– Univ.�of�Cincinnati
USB Improved Bridge Railing
Ohio County Prototype Railing
New York Local Roads 2014
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QuestionsQuestions
Thank�You.
New York Local Roads 2014
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PDHQ iQuestions
True or False Steel Sliding bearings can beTrue�or��False,�Steel�Sliding�bearings�can�be�specified�for�prefabricated�vehicular�trusses?
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PDHQuestions
Steel Sliding bearings can be specified forSteel�Sliding�bearings�can�be�specified�for�prefabricated�vehicular�trusses?
FALSE
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PDHiQuestions
A Pedestrian Bridge spanning over I�90 shall beA�Pedestrian�Bridge�spanning�over�I 90�shall�be�designated�as�____________���__.
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PDHiQuestions
A Pedestrian Bridge spanning over I�90 isA�Pedestrian�Bridge�spanning�over�I 90�is�designated�as�Unique�and�Unusual.
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PDHQuestions
For a Locally Let Project not over the NationalFor�a�Locally�Let�Project�not over�the�National�Highway�System�or�a�State�Highway�the�Sponsor assumes the responsibility for theSponsor assumes�the�responsibility�for�the�Quality�Assurance�of�the�____________.
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PDHQuestions
For a Locally Let Project not over the NationalFor�a�Locally�Let�Project�not over�the�National�Highway�System�or�a�State�Highway�the�Sponsor assumes the responsibility for theSponsor assumes�the�responsibility�for�the�Quality�Assurance�of�the
DesignDesign
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PDHQuestions
For a Locally Let Project not over the NationalFor�a�Locally�Let�Project�not over�the�National�Highway�System�or�a�State�Highway�the�Sponsor assumes the responsibility for theSponsor assumes�the�responsibility�for�the�Quality�Assurance�of�the
DesignDesignFabrication
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PDHQuestions
For a Locally Let Project not over the NationalFor�a�Locally�Let�Project�not over�the�National�Highway�System�or�a�State�Highway�the�Sponsor assumes the responsibility for theSponsor assumes�the�responsibility�for�the�Quality�Assurance�of�the
DesignFabricationConstruction