Occupational Safety, Fire Protection, and Environmental Protection
Safety questions test the hierarchy of controls: elimination, substitution, engineering controls, administrative controls, and personal protective equipment. Candidates must understand site risk assessment, scaffolding and excavation safety, electrical hazards, and the duties of employers and workers. Fire protection covers passive measures (compartmentation, escape routes, fire resistance) and active measures (detection, sprinklers, hydrants). Know the principles of means of escape: travel distance, exit width, and protected routes.
Environmental protection includes construction waste management, dust and noise control, protection of water and soil, and environmental impact assessment. Understand the permitting role of environmental authorities and the obligation to mitigate impacts during construction.
Traps
A frequent trap is placing PPE first in the hierarchy; it is the last resort. Another is confusing fire resistance (how long a element withstands fire) with fire reaction (how a material contributes to fire growth). Escape-route questions often hinge on travel distance and the number of exits. Environmental questions may test whether an impact assessment is required before a permit.
Worked example
For a room with a single exit, if the travel distance exceeds the permitted maximum for the occupancy, a second exit or a protected route is required regardless of sprinklers. Always check the occupancy classification and the applicable limits before proposing a solution.