Why slender flexible diaphragms may invalidate rigid diaphragm shear distribution assumptions in lateral analysis?
Choices
- (A) Open-plan slabs always rigid regardless of chords
- (B) Diaphragm shear lag can desynchronize tributary shear delivery to resisting lines
- (C) Every column participates equally without phase lag
- (D) Only splits gravity loads horizontally
Correct answer: (B)
Diaphragm shear lag can desynchronize tributary shear delivery to resisting lines
Explanation
Flexible diaphragms smear shear arrival times along collector lines.