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# ch7p06 - 7.21 A builder wishes to use a 5 m beam to span...

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Unformatted text preview: 7.21 A builder wishes to use a 5 m beam to span between two support walls which must support the loads given- The building code states that the maximum bending moment for a beam of this construction (crow section and material) is 13 kN-m. Compute the reaction forces, shear and moment functions and plot these shear and moment functions. Does the beam satisfy the code? 10kN 5kN FIGURE P721 Solution: 10 5 A 2 2 1 3 “v 3, FIGURE S7 .2121 V i—ix 3M A1 FIGURE 37.21b From a: 21+}, = : A1,+By—10-—5=0,ZMA = 0: —20—20+5B-,, = 0 .33, = 8 kN and A? = 7 kN. From b: 2Fy=0: 7—V=0 704 ...
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