Max Moment of a Beam Under Uniform Load
Easybending momentuniform load
A simply supported beam of span L = 8 m carries a uniformly distributed load w = 10 kN/m. What is the maximum bending moment?
- A80 kN·m
- B40 kN·m
- C160 kN·m
- D320 kN·m
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Answer: A. 80 kN·m
For a simply supported beam under uniform load, Mmax = w L2 / 8 at midspan: 10 · 82 / 8 = 10 · 64 / 8 = 80 kN·m. 40 kN·m is w L / 2 (that's the shear); 160 uses w L2 / 4.
kN·m
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