Excavation and Trenching Safety Course Overview
Excavation and trenching are among the most hazardous construction activities. OSHA’s standard 29 CFR 1926, Subpart P – Excavations establishes requirements to protect employees during these operations.
This course emphasizes methods to protect workers from cave-ins and other excavation-related hazards. A critical first step in any trenching or excavation project is understanding potential risks, which helps prevent common excavation problems.
This course provides an overview of safe practices and general guidance on hazards, protective systems, and safe work practices in excavation and trenching. It is not intended as a comprehensive guide for compliance with all OSHA regulations.
Course Objectives
By the end of this course, participants will be able to:
| ID | Objective |
|---|---|
| TO 1.0 | Achieve a minimum score of 70% on the final course assessment. |
| LO 1.1.1 | Explain the difference between an excavation and a trench. |
| LO 1.1.2 | Identify common soil hazards in excavations, including tension cracks, slides or sloughing, and heaving or squeezing. |
| LO 1.1.3 | Describe the characteristics of Type A, B, and C soils in terms of stability and outline visual and manual soil testing methods. |
| LO 1.1.4 | Discuss the responsibilities of the competent person before, during, and after excavation activities. |
| LO 1.2.1 | Explain the design requirements for primary protective methods—sloping, shoring, and shielding—and provide examples. |
| LO 1.2.2 | Summarize the steps for installing and removing protective systems. |
| LO 1.2.3 | Describe the requirements for safe entry into and exit from excavations. |
| LO 1.2.4 | Discuss additional safety precautions for workers while performing tasks in excavations. |
Key: TO = Terminal Objective, LO = Learning Objective