Chapter 17 Ropes, Chains, and Slings

Chapter 17 Ropes, Chains, and Slings - Chapter 17 Ropes,...

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Chapter 17 Ropes, Chains, and Slings FPST 2023
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Outline 1. Fiber Rope 2. Wire Rope 3. Rigging 4. Fiber and Wire Rope Sling 5. Chain and Chain Sling
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Natural fibers Manila and Sisal Synthetic fibers Nylon, polyester, polyolefin rope 1. Fiber Rope
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Working Load Table 17-A Linear density, tensile strength, working load Should the rope fail, it may recoil with considerable force, especially if the rope is made of nylon. 3 strand 8 strand
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Inspection and Use If rope is being used under ordinary conditions, inspect it every 30 days . Do not drag rope. Avoid sharp bends. Splice lengths of rope that must be joined. Do not knot them . Do not allow wet rope to freeze.
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2. Wire Rope Wire rope is the most critical moving part and will eventually wear out and fail It is important to predict the failure of wire rope and withdraw it from use before a catastrophe Wire rope - has many individual wires - it is easy to cut or break away any one of these small wires due to friction and wear - increased tensile strength on the remaining wires - overdesign of wire rope
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Wire Rope General speaking, the more wires per strand , the more flexible the wire rope is. The number of broken wires per lay is one of the principle bases for judging the condition of a rope. Corrosion
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Chapter 17 Ropes, Chains, and Slings - Chapter 17 Ropes,...

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