The Bureau of Standards wanted to know what caused structural failures in bridges and how to prevent them. So…
THE BUREAU OF STANDARDS 5,000-TON TESTING MACHINE AT PITTSBURGH
A high-carbon steel column under test. Restrained lattice. Buckling of diagonals has begun
This picture comes from the front page of the Engineering News for July 13, 1916. The article explains some of the discoveries made possible by this huge apparatus, and would probably be very interesting to students of engineering.