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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.
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