01-02ChapGere.0025 - calculated from the area A C , because...

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Solution 1.8-11 Cage hoisted by a crane 56 CHAPTER 1 Tension, Compression, and Shear W B A b c Dimensions of cage: b 5 6ft c 5 8ft Length of a cable: L 5 13 ft Weight of cage and contents: W 5 9600lb Breaking stress of a cable: s ult 5 91 ksi Factor of safety: n 5 3.5 G EOMETRY OF ONE CABLE ( CABLE AB ) Point B is above the midpoint of the cage h 5 height from A to B b 2 5 3 ft Ê c 2 5 4 ft s allow 5 s ult n 5 91 ksi 3.5 5 26,000 psi (13ft) 2 5 (3ft) 2 1 (4ft) 2 1 h 2 Solving, h 5 12ft F ORCE IN A CABLE T 5 force in one cable (cable AB ) T V 5 vertical component of T (Each cable carries the same load.) R EQUIRED AREA OF CABLE (Note: The diameter of the cable cannot be
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Unformatted text preview: calculated from the area A C , because a cable does not have a solid circular cross section. A cable consists of several strands wound together. For details, see Section 2.2.) A C 5 T s allow 5 2,600 lb 26,000 psi 5 0.100 in. 2 T 5 13 12 T V 5 2600 lb T T V 5 L h 5 13 ft 12 ft T V 5 W 4 5 9600 lb 4 5 2400 lb From geometry: L 2 5 b 2 2 1 c 2 2 1 h 2 h A B L = 13 ft b 2 c 2 T V A T A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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This note was uploaded on 09/20/2009 for the course COE 3001 taught by Professor Armanios during the Spring '08 term at Georgia Institute of Technology.

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