Structural Engineering and Bridges An Introduction to Fun

What is Engineering? Apply Math and Science to Solve a Problem Apply Math and Science to Solve a Problem Design – Create with what you have Design – Create with what you have Service to Society Service to Society

What are the major areas? Electrical cell phones, stereos Electrical cell phones, stereos Computer video games, hardware Computer video games, hardware Mechanical cars, robots, A/C Mechanical cars, robots, A/C Biomedical artificial limbs, hearts Biomedical artificial limbs, hearts Chemical shampoo, drugs Chemical shampoo, drugs And one more- the best type! And one more- the best type!

Civil Engineering Transportation Transportation Environmental Environmental Structural Structural

What do Structural Engineers do? Make an Architect’s design work Make an Architect’s design work Conserve resources and money Conserve resources and money Make structures safe Make structures safe

Hopefully Not This!!

Challenges of the Future Limited resources Limited resources Expanding population --- where do we put everyone? Expanding population --- where do we put everyone? Environmental concerns Environmental concerns

More Challenges of the Future Better earthquake - resistant structures Better earthquake - resistant structures Building with new materials Building with new materials

Different Types of Bridges Concrete/Steel Box Girder Concrete/Steel Box Girder

Suspension Suspension Different Types of Bridges

Different Types of Bridges Cable-Stay Cable-Stay

Different Types of Bridges Arch Arch

Different Types of Bridges Truss Truss

Which type should I choose? Span length Span length Long (Cable-Stay or Suspension) Long (Cable-Stay or Suspension) Short- Medium (Truss or Box Girder) Short- Medium (Truss or Box Girder) No piers (Arch) No piers (Arch) COST!!! COST!!!

Parts of the Truss Bridge

Parts of the Truss Bridge

Other Bridge Parts

Members of a Truss Bridge

Famous Structural Engineering in St. Louis

Famous Structural Engineering Elsewhere