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Question: 269 the bottom chord ab in a small truss abc...

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2.6-9 The bottom chord AB in a small truss ABC (see fig- ure) Is fabricated from a W8 X 28 wide-flange steel section The cross-sectional area A-825 In (Appendix F. Table F-1 (a) available online)) and each of the three applied loads P-45 k. First, flind member force Nas then, determine the normal and shear stresses acting on all faces of stress elements located in the web of member AB and orlented at (a) an angle θ-0, (b) an angle θ-30, and (c) an angle θ-45°. In each case, show the stresses on a sketch of a P-45 kips 9 a 12 t
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