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Which of the following statements best describes a pin-ended rigid structural frame?

39. Which of the following statements best describes a pin-ended rigid structural frame?

1. Frame where some joints are fixed while others are free to rotate
2. Frame where all joints are fixed and immovable
3. Frame where all joints are free to rotate and deflect without restraint
4. Frame where all joints are pinned but the members remain rigid

Answer

The correct answer is: D) Frame where all joints are pinned but the members remain rigid

Explanation

A pin-ended rigid structural frame refers to a structure where all joints are pinned, allowing rotation but the members themselves remain rigid.