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?

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)