F05 traffic signal mast arm inspection-kemp
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Transcript of F05 traffic signal mast arm inspection-kemp
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Traffic Signal Mast Arm Inspections
Tech
nical S
essio
n F5
American Public Works AssociationFlorida Chapter
Annual Meeting & Trade Show Jacksonville, Florida
April 26, 2013
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Reference Sources
• FHWA/FHWA/NHI Course No. 130087• AASHTO (2010 interim)
– Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals
• FDOT Bridge and Other Structure Inspection and Reporting Procedures
• FDOT Bridge Inspectors Field Guide
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Today’s Presenters
• Rick Maslyn, CBI – Ayres Associates• Brian Schroeder, PE, CBI – Ayres Associates• Charlie Wetzel, PE, PTOE – Seminole
County
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This Session Addresses:
• What a TSMA is• Why we should inspect TSMAs• Who should inspect TSMAs• Inspection procedures• Reporting procedures• Owner/maintainer responsibilities
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TSMA Structural Components
• Foundation, including anchor bolts/rods
• Mast/vertical member• Arm/horizontal
member
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TSMA Structural Components
• Moment Connection
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Anchor Bolt and Moment Connection Number Scheme
Foundation – Plan View Moment Connection – Front View
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FDOT Intersection Layout Scheme
• Intersection layout – plan view
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FDOT Intersection Numbering Scheme
• Example: 77M001– “77” = FDOT BMS County No.– “M” = Mast Arm Structure– “001” = unique three-digit number within
county
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AASHTO Loads
• Dead load• Wind loads• Ice load (not
applicable in Florida)
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AASHTO Forces
• Tension• Compression• Shear• Moment (bending)• Torsion
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TSMA Inspection Program
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FDOT TSMA Inspection Program
• Started 2008 • By FDOT Structures Maintenance Office• Structural inspection
– not electrical or signal
• Only State-owned TSMAs• Maintenance responsibility
– coastal vs. inland
• Reports in FDOT PONTIS
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FDOT TSMA Inspection Program
• Public safety • Protect asset/investment• Inspection findings could lead to design
improvements
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Local Government Inspection Program
• No formal program• Varies widely by agency• Seminole County here today to share
information
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FDOT Inspector Credentials
• Certified by the Department
• Same certification as bridge inspectors
• National Bridge Inspection Standards
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Inspection Types
• Initial (construction acceptance)• Routine (scheduled event)• Interim (monitor suspect condition)• Damage/emergency
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Inspections
• Visual• Physical• Advanced (NDT)
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Common Deficiencies
• Foundation below grade• Foundation cracks and spalls• Loose anchor bolts/leveling nuts• Excessive anchor bolt stand-off • Missing vermin/critter guards at base• Grout pads and weep holes at base
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Common Deficiencies
• Paint failure/corrosion on mast and arm• Impact damage (dents) on mast• Gaps at moment connections• Open hand holes on mast and arm
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Common Deficiencies
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Common Deficiencies
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Common Deficiencies
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Less Common Defects
• Structural cracks in mast and arm• Debonded/sheared anchor bolts• Misdirected sprinklers• Secondary projects that affect structure
such as drainage swales, sidewalks, and road widening
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Less Common Deficiencies
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Less Common Deficiencies
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NBI Superstructure Rating
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NBI Substructure Rating
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PONTIS Elements Lists
• Foundation = Ele 480• Vertical Member _Painted = Ele 481• Vertical Member _Galvanized = Ele 482• Horizontal Member _Painted = Ele 484• Horizontal Member _Galvanized = Ele 485
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PONTIS Condition States
• Foundation = Choice of CS1 through CS4• Unpainted Member = Choice of CS1
through CS4• Painted Member = Choice of CS1 through
CS5
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Preventative/Periodic Maintenance Responsibility
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Preventative/Periodic Maintenance Responsibility
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FDOT Repair Priorities
• Priority 1 (Emergency) = within 60 days *• Priority 2 (Urgent) = within 180 days *• Priority 3 (Routine) = within 365 days *
* Repair work to be completed
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Local Agency (Seminole County)
• Overall TSMA management plan• Manage program (field work)• Manage program (office work)
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Local Agency (Seminole County)
• Repair decision-making process• Other public agency interaction• Funding source(s)
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This Session Addressed:
• What a TSMA is• Why we should inspect TSMAs• Who should inspect TSMAs• Inspection procedures• Reporting procedures• Owner/maintainer responsibilities
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QUESTIONS? Seminole County
Charlie Wetzel, PE, PTOE
County Traffic Engineer
407.665.5686
Ayres Associates
Rick Maslyn, CBI
Structural Inspection Supervisor
813.318.1577