In the vertical position, a shackle can carry what percentage of its rated load?

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Multiple Choice

In the vertical position, a shackle can carry what percentage of its rated load?

Explanation:
When a shackle is loaded straight up and down, the force goes directly along its axis with no sideways or bending moment. The rating of the shackle is based on that straight-line pull, so it can carry its full working load limit in a vertical lift. If the load isn’t perfectly vertical and introduces angles, the effective capacity drops because the force is no longer aligned with the shackle’s plane, adding lever and side loads. That’s why 100% is the correct choice for vertical loads.

When a shackle is loaded straight up and down, the force goes directly along its axis with no sideways or bending moment. The rating of the shackle is based on that straight-line pull, so it can carry its full working load limit in a vertical lift. If the load isn’t perfectly vertical and introduces angles, the effective capacity drops because the force is no longer aligned with the shackle’s plane, adding lever and side loads. That’s why 100% is the correct choice for vertical loads.

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