Bridges

Loads on Bridges

100

In bridge engineering, a load is any ___________or weight that acts on a structure and must be supported by it.

Force

200

When determining load capacity for a bridge, what are the 2 temporary loads and which one is the only permanent load?

Temporary- Live and Environmental

Permanent- Dead

300

If a drainage system is not properly assembled on a bridge, what load needs to be considered in this situation?

Environmental Load due to Rain Water build up

400

What are the 2 most popular methods for combining loads when designing a bridge? (must have full names)

UBC-Uniform Building code

ASCE-American Society of Civil Engineers

500

What would an engineer who is designing a bridge in New York have to think about compared to one in Colorado during rush hour?

There might be more cars in New York than in Colorado, so the live load amount would be more in New York.

Bridge Materials

200

Steel is used in many bridges instead of wood because it is stronger and _____________________?
 

Has a longer lifespan than wood. Although steel will rust, wood will rot and make it weaker faster.

300

BONUS ROUND

Why is concrete often mixed with steel bars inside it and what is it called?
 

Steel makes concrete stronger with REBAR and handle pulling forces. Helps it not to crack.

Basic Bridge Forms

400

Truss Bridges are popular because they_____________________________?

They use a relatively small amount of material to carry relatively large load capacities.

Random

400

What force acts on the top of a bridge and what force acts on the bottom of a bridge?

Top-Compression (push)

Bottom-Tension (pull)