1. Explain how the different types of trenching and excavation protective systems (shielding, shoring, and sloping) are selected based on construction site conditions. Also, please provide a brief description of each type of protective system in your discussion.

Your response should be at least 75 words in length.

2. Discuss hazards and precautions to be taken when operating a crane near power lines.

Your response should be at least 75 words in length.

3. Discuss the site evaluation steps that should be taken before starting an excavation project. Which step(s) are likely to contribute the most in preventing excavation injuries? Why?

Your response should be at least 200 words in length.

4. What is the purpose of conducting an engineering survey prior to a demolition project? Describe and discuss the major components of an engineering survey for the demolition of a two-story wood structure.

Your response should be at least 200 words in length.