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Which assumption is made when applying the middle third rule to rectangular sections?
48. Which assumption is made when applying the middle third rule to rectangular sections?
- Shear stresses are negligible
- The material behaves elastically throughout the section
- Stress distribution is linear across the section
- The middle portion of the section experiences the highest stress
Answer
The correct answer is: A) Shear stresses are negligible
Explanation
The middle third rule assumes that shear stresses are negligible within the middle third of the rectangular section, simplifying the analysis of stress distribution.