How is SWL determined from the Catalog Breaking Strength?

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Multiple Choice

How is SWL determined from the Catalog Breaking Strength?

The main idea is turning a catalog’s breaking strength into a safe working load by applying a design factor. The breaking strength is the load at which the equipment would fail. To protect against uncertainties, wear, and dynamic conditions, you divide by a design factor (greater than one) to reduce that strength to a practical, safe working load. This gives SWL = Catalog Breaking Strength / Design Factor. For example, with a 10,000 lb breaking strength and a design factor of 5, the SWL is 2,000 lb. Subtracting, adding, or multiplying would not reliably reflect the required safety margin and could either overestimate or underestimate the safe load.

The main idea is turning a catalog’s breaking strength into a safe working load by applying a design factor. The breaking strength is the load at which the equipment would fail. To protect against uncertainties, wear, and dynamic conditions, you divide by a design factor (greater than one) to reduce that strength to a practical, safe working load. This gives SWL = Catalog Breaking Strength / Design Factor. For example, with a 10,000 lb breaking strength and a design factor of 5, the SWL is 2,000 lb. Subtracting, adding, or multiplying would not reliably reflect the required safety margin and could either overestimate or underestimate the safe load.

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