1. Understand OSHA Excavation Standards

• Interpret OSHA regulations (29 CFR 1926 Subpart P)
• Define excavation, trench, and protective systems
• Identify employer and employee responsibilities

2. Define Roles: Competent vs. Qualified Person

• Identify existing and predictable hazards
• Classify soil and inspect excavations daily
• Take immediate corrective actions
• Stop work when unsafe conditions exist

Qualified Person

• Design protective systems (e.g., shoring, shielding)
• Perform engineering analysis and calculations
• Approve complex excavation systems

3. Identify Excavation and Trenching Hazards

• Cave-ins (primary hazard)
• Falls and falling loads
• Hazardous atmospheres
• Water accumulation
• Underground utilities (gas, electrical, water)
• Vibration and adjacent structure hazards

4. Perform Soil Classification and Testing

• Soil types: Type A, Type B, Type C
• Manual and visual soil testing methods:
  1. Plasticity test
  2. Thumb penetration test
• Impact of soil conditions on stability

5. Select and Apply Protective Systems

• Sloping and benching
• Shoring systems:
  1. Timber shoring
  2. Hydraulic shoring
• Shielding systems (trench boxes)
• Use of tabulated data and soil analysis

6. Plan and Supervise Safe Excavation Work

• Pre-excavation planning
• Utility location and marking
• Access and egress requirements (ladders within 25 ft)
• Protection of adjacent structures

7. Inspection Requirements

• Daily inspections by Competent Person
• Inspections after:
  1. Rainstorms
  2. Vibrations
  3. Hazardous events
• Identifying signs of failure:
  1. Cracks, fissures
  2. Bulging or sloughing

8. Hazard Control Measures

• Water removal systems (pumps, drainage)
• Protective barriers and warning systems
• Safe spoil pile placement (minimum 2 ft from edge)
• Traffic control and protection

9. Emergency Response and Rescue

• Collapse response procedures
• Worker evacuation plans
• Emergency communication
• First aid awareness

10. Safe Work Practices

• Proper use of PPE
• Safe entry and exit from trenches
• Avoiding working under suspended loads
• Maintaining safe distances from equipment

Module 1: Introduction to Excavation Safety

• Definition of excavation and trenching
• OSHA 29 CFR 1926 Subpart P overview
• Importance of excavation safety
• Accident statistics and case studies (cave-ins, fatalities)

Module 2: Roles and Responsibilities

• Definition of Competent Person (OSHA)
• Definition of Qualified Person
• Duties and authority of each role
• Employer and employee responsibilities

Module 3: Excavation and Trenching Hazards

• Cave-ins (primary hazard)
• Falls and falling loads
• Hazardous atmospheres
• Water accumulation
• Underground utilities (gas, electric, communication)
• Equipment and traffic hazards

Module 4: Soil Classification and Testing

• Soil types:
  1. Type A
  2. Type B
  3. Type C
• Soil characteristics and stability
• Field testing methods:
  1. Visual test
  2. Thumb penetration test
  3. Plasticity (roll test)
• Effect of moisture and vibration

Module 5: Protective Systems

• Types of protective systems:
  1. Sloping and benching
  2. Shoring (timber, hydraulic)
  3. Shielding (trench boxes)
• Use of tabulated data
• Design considerations (Qualified Person role)

Module 6: Excavation Planning and Preparation

• Pre-excavation planning
• Utility location and marking (Call before you dig)
• Site evaluation and hazard identification
• Permits and documentation

Module 7: Safe Excavation Practices

• Access and egress (ladders within 25 ft)
• Spoil pile placement (minimum 2 ft from edge)
• Barricades and warning systems
• Equipment safety (distance from edge)

Module 8: Inspection of Excavations

• Daily inspection requirements
• Inspection after:
  • Rainstorms
  • Vibrations
  • Hazardous occurrences
• Signs of potential failure:
  • Cracks and fissures
  • Bulging walls
  • Soil movement

Module 9: Hazard Control Measures

• Water control (dewatering, drainage)
• Atmospheric testing (if required)
• Protection of adjacent structures
• Vibration and surcharge load control

Module 10: Shoring and Shielding Systems

• Installation procedures
• Inspection of shoring systems
• Proper use of trench boxes
• Removal procedures

Module 11: Emergency Response and Rescue

• Trench collapse response
• Emergency evacuation procedures
• Rescue planning and limitations
• Communication during emergencies

Module 12: Safe Work Practices and PPE

• Personal Protective Equipment (PPE)
• Safe entry and exit procedures
• Working near heavy equipment
• Fall protection around excavations

Module 13: Practical Training / Workshop

• Soil classification exercise
• Hazard identification scenarios
• Protective system selection exercise
• Inspection walkthrough (real or simulated trench)
• Group discussion and case studies

Module 14: Assessment and Certification

• Written examination (MCQs)
• Practical assessment
• Scenario-based evaluation
• Certification upon successful completion