LABOUR BASED: MONITORING AND DATA COLECTION

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LABOUR BASED MONITORING AND DATA COLECTION
INTENSIVELY CONSTRUCTED ROADS

• Trevor Bradbury (TRL UK)

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INTRODUCTION

• What is the purpose of monitoring labour based
  roads?
• What deterioration characteristics are we trying
  to monitor?
• How do we monitor them?
• What do we do with the data?

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PURPOSE OF MONITORING

• Modelling Behaviour
• How and why are roads performing?
• Filling gaps in models e.g. HDM-4
• Engineering Standards
• Setting appropriate criteria for approving works
• Compaction
• Levels

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WHAT TO MONITOR

• Monitor 200m sections covering a wide range of
  factors including
• Road Age
• Drainage
• Terrain
• Climate
• Material
• Traffic
• Monitor Before and After the Wet Season

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WHAT TO MONITOR

• Visual Condition
• Drainage
• Road Shape
• Surface Condition
• Ruts
• Corrugations
• Potholes
• Loose Material
• Oversize

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WHAT TO MONITOR

• Visual Condition
• Drainage
• Road Shape
• Surface Condition
• Roughness
• Roughness of wheel tracks?

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WHAT TO MONITOR

• Visual Condition
• Drainage
• Road Shape
• Surface Condition
• Roughness
• Roughness of wheel tracks
• Gravel Loss
• Amount of gravel loss over time

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HOW TO MONITOR

• Visual Condition
• Condition Survey Form
• Visually survey the section in 20m blocks
• Survey is largely qualitative
• Requires no measurement therefore quick

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HOW TO MONITOR

• Visual Condition
• Condition Survey Form

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HOW TO MONITOR

• Roughness
• Merlin Roughness Measurement Machine
• Low Cost, can be manufactured locally
• Quick
• Easy to use, requires little training
• Measure wheel tracks

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HOW TO MONITOR

• Roughness
• Merlin Roughness Measurement Machine

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HOW TO MONITOR

• Gravel Loss
• Install fixed monuments at side of road
• Survey relative heights of monuments
• Generate cross-section profiles by taking spot
  heights at 20cm intervals across the road
• Compare with previous profile

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DATA ANALYSIS

• Greg Morosiuk
• Greg will talk about this tomorrow.

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SUMMARY

• Collecting Data to Aid Modelling of Road
  Behaviour and to Help with Production of
  Engineering Standards
• Monitoring Visual Condition, Roughness and Gravel
  Loss
• Using Visual Condition Survey, Merlin and Cross
  Section Profiles
• Data Analysis - Tomorrow with Greg

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