If a single rated load is provided for a bridle sling, it is assumed to be for which type of bridle hitch?

• A. 30 degrees
• B. 45 degrees
• C. 60 degrees
• D. 90 degrees

Answer: (C)

The reason for selecting 60 degrees as the assumed angle for a single rated load for a bridle sling is rooted in standard rigging practices. When a bridle sling is set up, the angle at which the sling legs are positioned relative to the horizontal significantly affects the loading capacity and distribution of forces on the sling.

A 60-degree angle is commonly adopted in rigging applications because it reflects a balanced and efficient approach for load testing and ratings. At this angle, the sling can effectively manage the load with a good safety factor applied, as the tension in each leg of the sling will not exceed the rated load by a significant margin.

In contrast, other angles like 30 degrees or 45 degrees may lead to increased tension and reduced load capacity due to the geometric effects on the sling. A bridle hitch at 90 degrees can also place excessive load on the connection points, potentially leading to failure. Thus, the industry standard to assume a single rated load for bridle slings is based on a 60-degree configuration, ensuring safety and reliability in lifting applications.