Overhead Crane Practice Test

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What precaution should be observed when using 3 and 4 legged bridles?

All legs don't always share equal parts of the load
Legs should be of equal length
Bridle must be inspected every time
The weight must be evenly distributed

The correct answer is: All legs don't always share equal parts of the load

When using 3 and 4 legged bridles, it’s essential to recognize that not all legs share equal parts of the load. This outcome can occur due to several factors, such as uneven loading conditions or variations in leg lengths. If the angles between the legs vary significantly, this can lead to an unequal distribution of weight, placing excessive stress on certain legs. Understanding this precaution helps ensure that the rigging system operates safely and effectively, minimizing the risk of failure. While ensuring all legs are of equal length is beneficial for load distribution, it does not guarantee that the load will be evenly shared in practice. Inspecting the bridle before each use is critical for safety, yet it does not specifically address the inherent risk of unequal load sharing during operations. Similarly, even weight distribution is a goal but can be compromised by factors such as leg position and attachment points under load, thus highlighting the primary concern regarding the load sharing dynamics in a bridle system.