How to calculate safe working loads

Written by t.m. wit
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The term "safe working load" refers to the tons of weight that can be suspended from a wire cable. In order to accurately calculate safe working load, you will need to know the diameter of the rope in question. You can manually measure the diameter of the rope and use the data in the equation to determine the safe working load. The safe working load equation is recommended by the Naval Facilities Engineering Command.

Skill level:
Easy

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Things you need

  • Wire rope diameter

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Instructions

  1. 1

    Multiple the diameter of the wire rope by 2. For example, if the diameter is 6 inches, the formula would be (2 x 6=12).

  2. 2

    Multiple the previous result by 8. For example, if the diameter is 6, the resulting formula would be (12 x 8= 96).

  3. 3

    Use 96 as your safe workload total. To reiterate, the formula is 2d x 8=swl, where "d" is represented by the diameter of the rope in inches.

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