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Trench Safety and Utility Cuts

Road Scholar Eligibility

This class is a Road Scholar Elective course.


Length: 4 hours


  • Proper Trench backfill and compaction is important in utility trenches in order to maintain a smooth and serviceable road.
  • A cut trench's effect on road service life
  • How a trench cut reduces capacity of surrounding trench walls
  • Excavation Safety
  • Types of Soil and their effect
  • Dewatering excavations
  • Proper backfill and compaction around utilities
  • Compaction layer thicknesses
  • Dealing with saturated wet soils
  • Recutting paving beyond the excavation