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01-02ChapGere.0013

# 01-02ChapGere.0013 - 44 A-PDF Tension Compression and Shear...

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44 CHAPTER 1 Tension, Compression, and Shear Solution 1.7-10 Bar AB suspended by steel wires 7 b A W B 7 b 3 b 3 b 10 b E CD F b = 0.25 m F REE - BODY DIAGRAM OF POINT A L AC 5 L EC 5 Ï (3 b ) 2 1 (7 b ) 2 5 b Ï 58 F REE - BODY DIAGRAM OF WIRE ACE A T AC C AB W 2 C AB 5 3 W 14 © F horiz 5 0 Ê T AC ¢ 3 b b Ï 58 5 C AB T AC 5 W Ï 58 14 © F vert 5 0 Ê T AC ¢ 7 b b Ï 58 5 W 2 W 2 W 2 C AB C AB T CD E C A S F horiz 5 0 T CD 5 2 C AB 5 3 W 7 A LLOWABLE TENSILE FORCE IN A WIRE d 5 2mm s Y 5 450MPa F.S. 5 1.9 M AXIMUM TENSILE FORCES IN WIRES Force in wire AC is larger. M AXIMUM ALLOWABLE WEIGHT W 5 1370 N W max 5 14 T AC Ï 58 5 14 T allow Ï 58 5 14 Ï 58 (744.1 N) T CD 5 3 W 7 Ê T AC 5 W Ï 58 14 5 ¢ 450 MPa 1.9 ≤¢ p 4 (2 mm) 2 5 744.1 N T allow 5 s Y A n 5 s Y ¢ p d 2 4 n Problem 1.7-11 Two flat bars loaded in tension by forces P are spliced using two rectangular splice plates and two 5 / 8 -in. diameter rivets (see figure). The bars have width b 5 1.0 in. (except at the splice, where the bars are wider) and thickness
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