CSCS Safe Working Practices 4 — Questions and Answers
Question 1: What is the purpose of edge protection on a flat roof or elevated work platform?
- To mark the boundary of different work zones
- To prevent workers and materials from falling off the edge (Correct answer)
- To support temporary signage
- To protect the roof membrane from foot traffic
Correct answer: To prevent workers and materials from falling off the edge
Edge protection such as guardrails and toe boards prevent workers and materials from falling from elevated surfaces.
Question 2: Which hazardous substance regulation requires employers to assess and control workers' exposure to hazardous substances?
- OSHA Hazard Communication Standard (HazCom) (Correct answer)
- The Clean Air Act
- The Resource Conservation and Recovery Act
- The National Electrical Code
Correct answer: OSHA Hazard Communication Standard (HazCom)
OSHA's Hazard Communication Standard (HazCom / Right-to-Know) requires employers to identify, label, and provide safety data sheets for hazardous chemicals and train workers on them.
Question 3: What color is typically used for safety data sheet (SDS) section numbers related to health hazard information?
- Red
- Blue
- Yellow
- SDS sections use numbers, not colors (Correct answer)
Correct answer: SDS sections use numbers, not colors
SDS documents use a standardized 16-section format with numbered sections — color coding is used on GHS hazard labels, not SDS sections.
Question 4: If a worker is required to work in a trench deeper than 5 feet, what OSHA protection system is typically required?
- High-visibility vest and hard hat only
- Sloping, shoring, or a trench box protective system (Correct answer)
- A safety rope tied to the surface
- Verbal agreement between workers and the supervisor
Correct answer: Sloping, shoring, or a trench box protective system
OSHA requires a protective system such as sloping, shoring, or a trench box for trenches 5 feet or deeper to prevent cave-in fatalities.
Question 5: What should a worker do before using a ladder on a construction site?
- Sign a form confirming they are trained on ladder use
- Inspect the ladder for defects and ensure it is on stable, level ground (Correct answer)
- Inform their union representative
- Wear steel-toed boots only
Correct answer: Inspect the ladder for defects and ensure it is on stable, level ground
Before use, ladders must be visually inspected for damage and positioned on stable, level ground at the correct angle to prevent slipping or collapse.
Question 6: A worker notices that their co-worker is not wearing the required hearing protection in a designated high-noise area. What is the best action?
- Ignore it — it's not your responsibility
- Remind the co-worker to wear their hearing protection (Correct answer)
- Report it directly to OSHA without speaking to the co-worker first
- Confiscate the co-worker's tools until they comply
Correct answer: Remind the co-worker to wear their hearing protection
The first step is to remind the co-worker directly and respectfully, as this resolves the issue immediately and promotes a safety culture.
Question 7: What does the term 'hierarchy of controls' refer to in construction safety?
- The chain of command from site manager to worker
- A prioritized framework for eliminating or reducing workplace hazards (Correct answer)
- The ranking of different types of PPE by effectiveness
- The order in which emergency services should be called
Correct answer: A prioritized framework for eliminating or reducing workplace hazards
The hierarchy of controls ranks hazard control measures from most to least effective: Elimination, Substitution, Engineering controls, Administrative controls, and PPE.
CSCS Safe Working Practices 4
What is the purpose of edge protection on a flat roof or elevated work platform?