A continuous beam has two spans and three simple vertical supports, with no horizontal external reaction. What is its degree of static indeterminacy?
Correct answer: C. One
- A. Zero
- B. Two
- C. One
- D. Three
Explanation
There are three vertical support reactions but only two independent vertical equilibrium equations for the beam. Therefore, one additional compatibility equation is required, giving a degree of static indeterminacy of one.
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