Engineering professor on why columns may have buckled in New York City building

Manhattan blocks evacuated after beams found buckling at construction site

Midtown Manhattan building evacuated after beams found buckling

Evacuations ordered after workers find buckling beams inside NYC construction site

NYC high-rise evacuated after buckling columns spark collapse fears

'Buckling' beams inside NYC high-rise trigger mass evacuations

WATCH: Worker films 'buckling' beams at Manhattan high-rise | NBC New York

WATCH: ‘Buckling' beams at Manhattan high-rise under construction | NBC New York

High-rise collapse fears in New York

New York City building buckling