Ontario Class D Practice Test · Question
You are securing a piece of machinery on your straight truck flatbed. The machine weighs 5,000 kg and is 3 metres long. You plan to use four tie-downs. According to Canadian cargo securement rules, what is the minimum required working load limit (WLL) for each tie-down if they are all identical and secure the cargo evenly?
The aggregate working load limit of all tie-downs must be at least 50% of the weight of the cargo. For a 5,000 kg load, this is 2,500 kg. If using four identica
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Question: You are securing a piece of machinery on your straight truck flatbed. The machine weighs 5,000 kg and is 3 metres long. You plan to use four tie-downs. According to Canadian cargo securement rules, what is the minimum required working load limit (WLL) for each tie-down if they are all identical and secure the cargo evenly?
Answer options:
- 250 kg
- 500 kg ✅ 625 kg
- 1,000 kg
Correct answer: 625 kg
Explanation: The aggregate working load limit of all tie-downs must be at least 50% of the weight of the cargo. For a 5,000 kg load, this is 2,500 kg. If using four identical tie-downs, each must have a WLL of at least 2,500 kg / 4 = 625 kg. (National Safety Code Standard 10, Cargo Securement)
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