How should slings be positioned to ensure maximum lifting capacity?

To ensure maximum lifting capacity, slings should be positioned at an angle greater than 45 degrees to the horizontal. This positioning helps distribute the load more evenly across the sling, maximizing its strength and reducing the risk of failure. When slings are angled, the tension in the sling increases, which is a crucial factor in lifting applications.

When slings are positioned at an angle greater than 45 degrees, the vertical component of the load is more effectively balanced with the tension in the sling, thereby improving lifting efficiency and maintaining stability. Additionally, using a higher angle helps to minimize the potential for sling slippage and ensures that the load remains secure during lifting operations.

On the other hand, positioning slings either vertically or horizontally may not utilize the sling's full lifting capacity effectively. A vertical sling can concentrate the load in a single point, which may not be optimal, while a horizontal sling does not provide the necessary angle to achieve the best tension distribution. Therefore, lifting at an angle greater than 45 degrees is the recommended practice to ensure safety and effectiveness in rigging operations.