403A Safety 2

Question 1

What is the correct ladder setup angle (ratio) for a straight or extension ladder?

Accepted Answer

1:4 ratio (base to height)

Answer

The correct setup angle for a straight or extension ladder is a 1:4 ratio — for every 4 feet of height, the base should be 1 foot away from the support structure. This creates approximately a 75-degree angle, providing optimal stability.

Question 2

Under Canadian OHS regulations, what must be done before excavation work begins?

Accepted Answer

Underground utilities must be located and marked, and the excavation must be planned for soil type and depth

Answer

Before excavation, underground utilities must be located by calling the provincial one-call service (e.g., Ontario One Call, BC One Call). The excavation must be planned considering soil type, depth, water conditions, and shoring or sloping requirements.

Question 3

What is a Joint Health and Safety Committee (JHSC) and when is one required?

Accepted Answer

A worker-employer committee; required when a workplace regularly employs 20 or more workers

Answer

A JHSC is a committee composed of both worker and employer representatives that identifies workplace hazards and recommends solutions. Most provinces require a JHSC when a workplace regularly employs 20 or more workers.

Question 4

What is the maximum weight a worker should lift manually according to Canadian ergonomic guidelines?

Accepted Answer

23 kg (51 lbs)

Answer

Canadian ergonomic guidelines generally recommend a maximum manual lifting weight of approximately 23 kg (51 lbs) under ideal conditions. Factors such as lifting frequency, posture, distance, and grip may reduce this limit significantly.

Question 5

What is a toolbox talk (tailgate meeting) in Canadian construction safety?

Accepted Answer

A brief daily or weekly safety meeting discussing specific hazards relevant to the day's work

Answer

A toolbox talk is a short, focused safety meeting (typically 5-15 minutes) held on site to discuss specific hazards, safe work procedures, and safety concerns related to the day's work activities. It keeps safety awareness current and relevant.

Red Seal Carpenter 403A Practice Test

Red Seal Carpenter 403A Practice Test

403A Safety 2