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In structural analysis, why are frame reactions important?

44. In structural analysis, why are frame reactions important?

1. They determine the material properties of the frame
2. They provide information about external loading
3. They help in calculating internal member forces
4. They establish equilibrium in the frame structure

Answer

The correct answer is: D) They establish equilibrium in the frame structure

Explanation

Frame reactions are crucial because they establish equilibrium in the frame structure by balancing external loads with internal member forces. Option D captures this essence accurately.