Engineering Challenges of the 20th Century INCREASING SCALE Brooklyn Bridge Space v rocket Hoover dam boeIng M.A. Schmidt 3155J/6.152]- Lecture1FA03Engineering Challenges of the 20th Century: INCREASING SCALE Brooklyn Bridge Space V rocket Hoover Dam Boeing 747-400 M.A. Schmidt 3.155J/6.152J – Lecture 1 FA03 6