Introduction

Hazards

O’SHA Definitions

O’SHA requirements-Utilities and Structures

Protective systems

Traffic

Hazardous Atmosphere

Additional Guidelines

Competent Person Responsibilities

Soil Classifications-Soil Testing

Virtual Tests

Plasticity Test

Dry Strength

Other Tests

Protective systems-Sloping  & Benching

Sloping and Benching Examples

Trench Box & Shields

Shoring

Additional Guidelines

Harzardous Atmosphere

Training

Things To Remember