Factor of Safety

How bridges, buildings, and marvels of engineering really work.

Factor of Safety breaks down the world's biggest builds with the real numbers: how heavy they are, how strong they need to be, how close they came to failing, and why they are still standing. Each video is worked through by a civil engineering student, with sourced facts and back-of-the-envelope calculations you can check yourself.

In every video:
• Every number comes from a published source, listed in the description
• The full calculation is in the pinned comment
• Original 3D models, diagrams and maps, plus credited archive footage
• Mistakes get corrected and pinned

Have documents, drawings or photos of a structure we covered? Send them in.
Business and contact: factorofsafety.business@gmail.com