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PowerPoint ® Presentation Chapter 2 Rope Rope Construction Wire Rope Fiber Rope
Chapter 2 Rope Rope is constructed from fibers, yarn or wire, and strands. These components are twisted together in various ways to form strong and flexible rope.
Chapter 2 Rope The directions of the strand and rope twist affect some of the characteristics of rope, such as flexibility, wear, and tendency to rotate.
Chapter 2 Rope Wire rope diameter must be measured at its widest point.
Chapter 2 Rope The breaking strengths of wire ropes vary by type, material, and size.
Chapter 2 Rope Rope must not be loaded beyond its safe working load limit, which is a fraction of its breaking strength.
Chapter 2 Rope Many factors affect the actual force on a sling and the working load limit, which must not be exceeded.
Chapter 2 Rope Tight bends reduce the effective strength of a rope and can permanently damage wires or fibers.
Chapter 2 Rope Rope bending efficiency increases with bend ratio.
Chapter 2 Rope Seizing is wire wrapping added to wire rope to prevent unraveling or loose wires.
Chapter 2 Rope Fiber rope whipping is completed before cutting in order to bind all the strands together.
Chapter 2 Rope Wire rope is composed of a core surrounded by strands, each of which is composed of a specific pattern of wires of different sizes.
Chapter 2 Rope The wires in strands can be arranged in different patterns, which changes the strength, flexibility, and wear characteristics.
Chapter 2 Rope Rope designations use letter acronyms to indicate various rope characteristics.
Chapter 2 Rope Thimbles are installed to form a loop and the ends of the wire rope are fastened with a specific number of clips.
Chapter 2 Rope A swage socket is pressed onto the end of a wire rope with high pressure until the collar conforms to the shape of the rope.
Chapter 2 Rope Spelter sockets are locked onto a wire rope end by a wedge formed out of the fanned-out wire encased in resin or zinc.
Chapter 2 Rope Wedge sockets hold tightly to a wire rope when it is tensioned.
Chapter 2 Rope Synthetic fiber ropes are generally stronger than natural fiber ropes, though the strength varies with construction type.
Chapter 2 Rope Fiber rope can be constructed by twisting fibers into yarn, yarn into strands, and strands into rope.
Chapter 2 Rope Synthetic fiber ropes can be constructed by braiding or plaiting the strands, which may or may not be twisted.
Chapter 2 Rope A splice is the permanent joining of two ropes. A long splice minimizes the increase to the splice areas diameter.
Chapter 2 Rope Eye-loop splices are important for adding hooks, links, or other attachment hardware to the end of a rope.
Chapter 2 Rope Crowning is a method of finishing a cut end of fiber rope without whipping.
Rigging Hazard Awareness Between the trolley hook and the load is RIGGING Ropes, Slings, Chains Slings inspected daily Proper storage when not in use Suitable.
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