Michigan Residential Builders License Practice Test

When should a qualified person conduct inspections of an excavation or trench?

1. Daily before work starts

2. After every rainstorm or hazard-producing occurrence

3. Weekly on the same day

4. Before project completion

The correct answer is: After every rainstorm or hazard-producing occurrence

A qualified person should conduct inspections of an excavation or trench after every rainstorm or hazard-producing occurrence due to the potential changes in conditions that can affect safety. Heavy rainfall can lead to water accumulation, which may increase the risk of trench collapse, erosion, or unstable soil conditions. By ensuring an inspection is performed after such events, hazards can be identified and mitigated effectively, maintaining a safer work environment for all involved. Daily inspections before work starts are important but may not be sufficient on their own, as they do not account for the effects of rainfall or other unexpected hazards. While weekly inspections and those done before project completion have their place, they lack the immediacy required to address the dangers that can arise from specific environmental factors. Prioritizing inspections after rainstorms ensures that conditions remain safe for all workers and prevents accidents.