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Condition Assessment Presented by:
• John J. Jackman, P.E.
Associate - Asset Management Specialist
• Benjamin B. Horner, P.L.S.
Associate - Senior Designer
Agenda
• Inspection vs. Condition
• Benefits
• Developing Condition Assessment
• Initial Condition Assessment Techniques
• Typical Structural Performance Grades
• Condition Standards
• Estimating Remaining Useful Life
Inspection vs. Condition
• Inspection is the Minimum Acceptable Standard
• Condition is a Numeric Rating on the Deterioration Curve
Benefits
• Provides Accurate Information About Current and Future Performance
• Provides Reference Points on Deterioration Curve
• Prevents Premature Expenditures
• Provides the Basis for Making Capital Improvement Decisions
Developing Condition Assessment
• Current deficiencies
• Condition rating assignment• Defect type and extent
• Performance• Effective life consumed
• Utilization• Capacity assessment
• Required Repairs
Initial Condition Assessment Techniques
• Visual Assessment
• Maintenance History Review
• Operational Evaluation• Staff Interviews
Initial Condition Assessment Techniques
• Develop standard assessment forms• Assessment tables differ for various asset types
• Train for assessment consistency
• Complete assessment during routine maintenance
• Estimate remaining useful life
Initial Condition Assessment Techniques
• Assessment tools• Repair history
• Closed Circuit Television (CCTV)
• ZOOM Camera
• Sonar or Radar
• Smoke Testing
• Pressure Test
• Flow Metering
• C-Values
Smoke Testing
Condition Standards
• Pipeline Assessment and Certification Program (PACP)
• Manhole Assessment and Certification Program (MACP)
• Pavement Condition Index (PCI)
• Federal Sufficiency Rating (Bridge)
• Manual on Uniform Traffic Control Devices (MUTCD) (Reflectivity)
Condition Standards - PACP
• Structural Defects• Crack
• Fracture
• Deformed
• Collapsed
• Joint
• Surface Damage
• Lining Failure
• Weld Failure
• Point Repair
• Brickwork
Break
Hole
Condition Standards - PACP
• Operation & Maintenance Defects• Deposits
• Roots
• Infiltration
• Obstacles
• Vermin Roots
Grease
Condition Standards - PACP
• Infiltration (Groundwater)• Structural Issues
• Operation and Maintenance
• Inflow (Inappropriate Connections)• Catch Basins
• Roof Drains
• Sump Pumps
Smoke Testing
Condition Standards – PACP
• Typical Defect Grades
Grade Condition Comment
5 Immediate Attention Defect Requires Immediate Attention
4 Poor Severe Defects that will Become Grade 5 Defects within
the Near Future
3 Fair Moderate Defects that will Continue to Deteriorate
2 Good Defects that have not Begun to Deteriorate
1 Excellent Minor Defects
Condition Standards - PACP
• Typical Performance Grades
Grade Condition Performance
5 Immediate Attention Collapsed or Collapse Imminent
4 Poor Collapse Likely in Foreseeable Future
3 Fair Collapse Unlikely in Near Future
2 Good Minimal Collapse Risk
1 Excellent Acceptable Structural Condition
Condition Standards - PCI
• Two Ways to Measure the Road Network Condition • Only Address Reported Complaints
• Preventative Maintenance Based on Condition Assessment
• Critical information for each roadway segment • Class - Local Residential, Collector, or Arterial
• Length, Width, and Geometry
• Traffic Type and Volume
• Pavement Type - Flexible, Rigid, or Composite
• Original Construction Date
• Maintenance and Rehabilitation History
• Current PCI Condition
Condition Standards - PCI
Weig
ht
Index (
Wi) Severity of Distress (Si) Density of Distress (Di)
Very
Slight
Slight
Modera
te
Severe
Very
Severe
Few
Inte
rmit
tent
Fre
quent
Exte
nsi
ve
Thro
ughout
<10 10-20 20-40 40-80 >80
Pavement Wi 1 2 3 4 5 1 2 3 4 5
Surface DefectsRaveling & loss of surface aggregate
3.0
Flushing 1.5
Surface Deformations
Rippling and Shoving 1.0
Wheel Track Rutting 3.0
Distortion 3.0
Cra
ckin
g
Longitudinal
Wheel Track
Single and Multiple1.5
Alligator 3.0
CenterlineSingle and Multiple 0.5
Alligator 2.0
Pavement EdgeSingle and Multiple 0.5
Alligator 1.5
TransverseHalf, full and multiple 1.0
Alligator 3.0
Longitudinal-meander or mid-lane 1.0
Random 0.5
Condition Standards -Federal Sufficiency Rating
• Based on an 100 Point Scale
• Overall Rating of a Bridges Fitness
Estimating Remaining Useful Life
• Deterioration curve impacts• Current condition
• Environmental conditions
• Severity of service
• Past experience
Estimating Remaining Useful Life
• Determining Rehabilitation/ Replacement Cost• Construction Cost Estimating Guides
• Manufacturer Quotes
• Cost Data from Previous Bids
• Estimate Current Cost from Original Cost