02-01ChapGere.0006

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Problem 2.2-8 The three-bar truss ABC shown in the figure has a span L 5 3 m and is constructed of steel pipes having cross-sectional area A 5 3900 mm 2 and modulus of elasticity E 5 200 GPa. A load P acts horizontally to the right at joint C . (a) If P 5 650 kN, what is the horizontal displacement of joint B ? (b) What is the maximum permissible load P max if the displacement of joint B is limited to 1.5 mm? 68 CHAPTER 2 Axially Loaded Members L AB 45 ° 45 ° P C Solution 2.2-8 Truss with horizontal load L A B 45 ° 45 ° P C L 2 R B F BC F AB R B = B L 5 3m A 5 3900 mm 2 E 5 200 GPa
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