Why do progressive‑collapse tying strategies demand continuous collector continuity?
Choices
- (A) Catenary and Vierendeel bridging need alternate load paths beyond lost columns
- (B) Tying only decorates façade edges statically
- (C) Lost columns redistribute instantly without diaphragm shear
- (D) Catenary ties are irrelevant once beams crack
Correct answer: (A)
Catenary and Vierendeel bridging need alternate load paths beyond lost columns
Explanation
Robust ties let slabs span over missing bearing lines temporarily.