Workplace Hazards Flashcards
What is the maximum trench depth that a worker can work in before shoring or sloping is required?
4ft (1.2m)
What is an alternative to shoring to ensure a trench wall will not cave in?
Slope the sides of a trench
Angle of repose is best described as
The natural slope formed when excavated material is piled
The lowest amperage at which electric shock can be fatal
50 mA
When do temporary work platforms require a guardrail?
When the potential drop is 3m (10 ft) or more
How soon must an employer report a workers injury to WorkSafeBC
Within 72 hours
What is the classification of an electrical fire?
Class C
What class are fires involving gasoline and other flammable liquids?
Class B
What class are fires involving ordinary combustibles such as wood?
Class A
In a Class D fire, what is the burning material?
Combustible metals
The minimum distance that a single or extension ladder is required to project above the level to which it gives access
3 ft (1 m)
What is the minimum width of a wooden scaffold plank?
9 1/4” (235 mm)
What is the minimum height of a guardrail?
40” (1020 mm)
