Engineering Board Exam Reviewer · Strength of Materials · hard

A simply supported beam of span 6 m (EI = 15000 kN· m2) carries a uniformly distributed load of 15 kN/m over its entire length. What is the maximum deflection, in mm?

  1. 162
  2. 3.38
  3. 16.88
  4. 22.5

Answer

C. 16.88

Solution

For a full-span uniform load, max = 5wL4/(384EI) = 5(15)(6)4/(384 × 15000) = 0.01688 m = 16.88 mm.

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